/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:48:06,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:48:06,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:48:06,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:48:06,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:48:06,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:48:06,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:48:06,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:48:06,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:48:06,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:48:06,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:48:06,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:48:06,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:48:06,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:48:06,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:48:06,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:48:06,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:48:06,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:48:06,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:48:06,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:48:06,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:48:06,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:48:06,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:48:06,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:48:06,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:48:06,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:48:06,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:48:06,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:48:06,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:48:06,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:48:06,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:48:06,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:48:06,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:48:06,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:48:06,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:48:06,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:48:06,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:48:06,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:48:06,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:48:06,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:48:06,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:48:06,312 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 07:48:06,352 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:48:06,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:48:06,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:48:06,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:48:06,354 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:48:06,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:48:06,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:48:06,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:48:06,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:48:06,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:48:06,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:48:06,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:48:06,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:48:06,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:48:06,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:48:06,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:48:06,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:48:06,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:48:06,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:48:06,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:48:06,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:48:06,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:48:06,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:48:06,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:48:06,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:48:06,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:48:06,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:48:06,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:48:06,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:48:06,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:48:06,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:48:06,856 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:48:06,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:48:06,863 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:48:06,865 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:48:06,866 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-25 07:48:06,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30d86e4f1/2da301f000624ba3b898c51f12a4c4b0/FLAG2f67f331c [2020-09-25 07:48:07,564 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:48:07,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2020-09-25 07:48:07,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30d86e4f1/2da301f000624ba3b898c51f12a4c4b0/FLAG2f67f331c [2020-09-25 07:48:07,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30d86e4f1/2da301f000624ba3b898c51f12a4c4b0 [2020-09-25 07:48:07,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:48:07,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:48:07,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:48:07,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:48:07,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:48:07,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:48:07" (1/1) ... [2020-09-25 07:48:07,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6017e0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:07, skipping insertion in model container [2020-09-25 07:48:07,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:48:07" (1/1) ... [2020-09-25 07:48:07,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:48:07,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:48:08,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:48:08,408 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:48:08,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:48:08,592 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:48:08,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:08 WrapperNode [2020-09-25 07:48:08,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:48:08,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:48:08,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:48:08,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:48:08,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:08" (1/1) ... [2020-09-25 07:48:08,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:08" (1/1) ... [2020-09-25 07:48:08,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:08" (1/1) ... [2020-09-25 07:48:08,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:08" (1/1) ... [2020-09-25 07:48:08,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:08" (1/1) ... [2020-09-25 07:48:08,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:08" (1/1) ... [2020-09-25 07:48:08,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:08" (1/1) ... [2020-09-25 07:48:08,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:48:08,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:48:08,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:48:08,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:48:08,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:08" (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 07:48:08,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:48:08,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:48:08,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 07:48:08,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:48:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:48:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 07:48:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:48:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 07:48:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 07:48:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:48:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:48:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:48:09,064 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 07:48:09,734 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 07:48:09,734 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 07:48:09,752 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:48:09,752 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:48:09,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:48:09 BoogieIcfgContainer [2020-09-25 07:48:09,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:48:09,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:48:09,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:48:09,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:48:09,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:48:07" (1/3) ... [2020-09-25 07:48:09,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2584c621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:48:09, skipping insertion in model container [2020-09-25 07:48:09,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:08" (2/3) ... [2020-09-25 07:48:09,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2584c621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:48:09, skipping insertion in model container [2020-09-25 07:48:09,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:48:09" (3/3) ... [2020-09-25 07:48:09,773 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-09-25 07:48:09,785 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:48:09,797 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:48:09,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:48:09,856 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:48:09,856 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:48:09,856 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:48:09,857 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:48:09,857 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:48:09,857 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:48:09,857 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:48:09,858 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:48:09,890 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states. [2020-09-25 07:48:09,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 07:48:09,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:09,912 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] [2020-09-25 07:48:09,912 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:09,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:09,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1103530067, now seen corresponding path program 1 times [2020-09-25 07:48:09,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:09,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346034661] [2020-09-25 07:48:09,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:10,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:10,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:11,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:11,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:11,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 07:48:11,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:48:11,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1324 [2020-09-25 07:48:11,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:11,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 07:48:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:48:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:48:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:11,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:11,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:11,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:11,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:11,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:48:11,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:11,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:11,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:11,670 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 07:48:11,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346034661] [2020-09-25 07:48:11,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:11,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:11,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400264890] [2020-09-25 07:48:11,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:11,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:11,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:11,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:11,703 INFO L87 Difference]: Start difference. First operand 440 states. Second operand 4 states. [2020-09-25 07:48:12,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:12,095 INFO L93 Difference]: Finished difference Result 787 states and 1025 transitions. [2020-09-25 07:48:12,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:12,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 07:48:12,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:12,121 INFO L225 Difference]: With dead ends: 787 [2020-09-25 07:48:12,121 INFO L226 Difference]: Without dead ends: 439 [2020-09-25 07:48:12,128 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 07:48:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-09-25 07:48:12,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 428. [2020-09-25 07:48:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-09-25 07:48:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 512 transitions. [2020-09-25 07:48:12,223 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 512 transitions. Word has length 160 [2020-09-25 07:48:12,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:12,225 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 512 transitions. [2020-09-25 07:48:12,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:12,225 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 512 transitions. [2020-09-25 07:48:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 07:48:12,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:12,231 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] [2020-09-25 07:48:12,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:48:12,231 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:12,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:12,232 INFO L82 PathProgramCache]: Analyzing trace with hash 732761503, now seen corresponding path program 1 times [2020-09-25 07:48:12,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:12,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038385992] [2020-09-25 07:48:12,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:12,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:12,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:12,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:13,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:13,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:13,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 07:48:13,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:48:13,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 963 [2020-09-25 07:48:13,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:13,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 07:48:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 07:48:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:13,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:13,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:13,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:13,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:13,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:13,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:13,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:13,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:13,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:13,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:13,330 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 07:48:13,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038385992] [2020-09-25 07:48:13,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:13,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:13,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268210489] [2020-09-25 07:48:13,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:13,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:13,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:13,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:13,346 INFO L87 Difference]: Start difference. First operand 428 states and 512 transitions. Second operand 4 states. [2020-09-25 07:48:13,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:13,643 INFO L93 Difference]: Finished difference Result 757 states and 932 transitions. [2020-09-25 07:48:13,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:13,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-09-25 07:48:13,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:13,658 INFO L225 Difference]: With dead ends: 757 [2020-09-25 07:48:13,658 INFO L226 Difference]: Without dead ends: 469 [2020-09-25 07:48:13,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:48:13,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-09-25 07:48:13,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 458. [2020-09-25 07:48:13,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-09-25 07:48:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 547 transitions. [2020-09-25 07:48:13,709 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 547 transitions. Word has length 165 [2020-09-25 07:48:13,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:13,710 INFO L479 AbstractCegarLoop]: Abstraction has 458 states and 547 transitions. [2020-09-25 07:48:13,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:13,710 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 547 transitions. [2020-09-25 07:48:13,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 07:48:13,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:13,714 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 07:48:13,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:48:13,714 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:13,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:13,715 INFO L82 PathProgramCache]: Analyzing trace with hash -296204506, now seen corresponding path program 1 times [2020-09-25 07:48:13,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:13,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279664301] [2020-09-25 07:48:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:13,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:13,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:14,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:14,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:14,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:14,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:15,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:15,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:15,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 07:48:15,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:48:15,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1901 [2020-09-25 07:48:15,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:15,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 07:48:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:48:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:15,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:15,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:15,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:15,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:15,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:15,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:15,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:15,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:15,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:15,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:15,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279664301] [2020-09-25 07:48:15,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:15,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:15,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872835359] [2020-09-25 07:48:15,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:15,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:15,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:15,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:15,720 INFO L87 Difference]: Start difference. First operand 458 states and 547 transitions. Second operand 4 states. [2020-09-25 07:48:15,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:15,954 INFO L93 Difference]: Finished difference Result 819 states and 1002 transitions. [2020-09-25 07:48:15,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:15,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-09-25 07:48:15,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:15,959 INFO L225 Difference]: With dead ends: 819 [2020-09-25 07:48:15,960 INFO L226 Difference]: Without dead ends: 501 [2020-09-25 07:48:15,961 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 07:48:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-09-25 07:48:15,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 490. [2020-09-25 07:48:15,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-09-25 07:48:15,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 586 transitions. [2020-09-25 07:48:15,985 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 586 transitions. Word has length 166 [2020-09-25 07:48:15,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:15,987 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 586 transitions. [2020-09-25 07:48:15,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:15,987 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 586 transitions. [2020-09-25 07:48:15,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 07:48:15,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:15,991 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 07:48:15,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:48:15,991 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:15,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:15,992 INFO L82 PathProgramCache]: Analyzing trace with hash 891632122, now seen corresponding path program 1 times [2020-09-25 07:48:15,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:15,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073550619] [2020-09-25 07:48:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:16,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:16,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:16,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:16,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:17,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:17,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 07:48:17,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:48:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1083 [2020-09-25 07:48:17,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:17,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:17,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:17,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 07:48:17,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:48:17,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:48:17,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:17,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:17,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:17,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:17,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:17,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:17,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:17,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:17,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:17,172 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 07:48:17,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073550619] [2020-09-25 07:48:17,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:17,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:17,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870114850] [2020-09-25 07:48:17,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:17,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:17,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:17,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:17,177 INFO L87 Difference]: Start difference. First operand 490 states and 586 transitions. Second operand 4 states. [2020-09-25 07:48:17,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:17,422 INFO L93 Difference]: Finished difference Result 874 states and 1074 transitions. [2020-09-25 07:48:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:17,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-09-25 07:48:17,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:17,427 INFO L225 Difference]: With dead ends: 874 [2020-09-25 07:48:17,427 INFO L226 Difference]: Without dead ends: 524 [2020-09-25 07:48:17,429 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 07:48:17,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-09-25 07:48:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 513. [2020-09-25 07:48:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-09-25 07:48:17,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 614 transitions. [2020-09-25 07:48:17,451 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 614 transitions. Word has length 166 [2020-09-25 07:48:17,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:17,452 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 614 transitions. [2020-09-25 07:48:17,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:17,452 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 614 transitions. [2020-09-25 07:48:17,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 07:48:17,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:17,455 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 07:48:17,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:48:17,456 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:17,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:17,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1047125047, now seen corresponding path program 1 times [2020-09-25 07:48:17,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:17,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732488130] [2020-09-25 07:48:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:17,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:17,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:17,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:18,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:19,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:19,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 07:48:19,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:48:19,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1762 [2020-09-25 07:48:19,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:19,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 07:48:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:48:19,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:19,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:19,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:19,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:19,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:19,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:19,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:19,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:19,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:19,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:19,305 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 07:48:19,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732488130] [2020-09-25 07:48:19,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:19,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:19,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255991423] [2020-09-25 07:48:19,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:19,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:19,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:19,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:19,308 INFO L87 Difference]: Start difference. First operand 513 states and 614 transitions. Second operand 4 states. [2020-09-25 07:48:19,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:19,568 INFO L93 Difference]: Finished difference Result 953 states and 1164 transitions. [2020-09-25 07:48:19,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:19,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-09-25 07:48:19,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:19,574 INFO L225 Difference]: With dead ends: 953 [2020-09-25 07:48:19,574 INFO L226 Difference]: Without dead ends: 580 [2020-09-25 07:48:19,576 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 07:48:19,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-09-25 07:48:19,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 539. [2020-09-25 07:48:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-09-25 07:48:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 645 transitions. [2020-09-25 07:48:19,596 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 645 transitions. Word has length 167 [2020-09-25 07:48:19,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:19,597 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 645 transitions. [2020-09-25 07:48:19,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:19,597 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 645 transitions. [2020-09-25 07:48:19,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 07:48:19,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:19,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:19,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:48:19,603 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:19,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:19,604 INFO L82 PathProgramCache]: Analyzing trace with hash -849841006, now seen corresponding path program 1 times [2020-09-25 07:48:19,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:19,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7792838] [2020-09-25 07:48:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:19,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:19,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:19,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:20,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:20,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:21,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:21,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 07:48:21,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:48:21,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1564 [2020-09-25 07:48:21,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:21,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:21,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:21,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 07:48:21,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:48:21,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:21,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:21,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:21,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:21,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:21,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:21,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:21,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:21,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:21,288 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 07:48:21,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7792838] [2020-09-25 07:48:21,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:21,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:21,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907992032] [2020-09-25 07:48:21,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:21,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:21,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:21,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:21,291 INFO L87 Difference]: Start difference. First operand 539 states and 645 transitions. Second operand 4 states. [2020-09-25 07:48:21,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:21,553 INFO L93 Difference]: Finished difference Result 1005 states and 1226 transitions. [2020-09-25 07:48:21,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:21,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-09-25 07:48:21,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:21,559 INFO L225 Difference]: With dead ends: 1005 [2020-09-25 07:48:21,559 INFO L226 Difference]: Without dead ends: 606 [2020-09-25 07:48:21,561 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 07:48:21,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-09-25 07:48:21,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 539. [2020-09-25 07:48:21,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-09-25 07:48:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 645 transitions. [2020-09-25 07:48:21,578 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 645 transitions. Word has length 168 [2020-09-25 07:48:21,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:21,579 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 645 transitions. [2020-09-25 07:48:21,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:21,579 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 645 transitions. [2020-09-25 07:48:21,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 07:48:21,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:21,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:21,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:48:21,584 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:21,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:21,584 INFO L82 PathProgramCache]: Analyzing trace with hash -466072829, now seen corresponding path program 1 times [2020-09-25 07:48:21,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:21,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237831099] [2020-09-25 07:48:21,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:21,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:21,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:21,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:21,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:22,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:22,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 07:48:22,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:48:22,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1095 [2020-09-25 07:48:22,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:22,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:22,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:22,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-09-25 07:48:22,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 07:48:22,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:22,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:22,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:22,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:22,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:22,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:22,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:22,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:22,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:22,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:22,792 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 07:48:22,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237831099] [2020-09-25 07:48:22,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:22,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:22,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456323262] [2020-09-25 07:48:22,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:22,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:22,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:22,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:22,795 INFO L87 Difference]: Start difference. First operand 539 states and 645 transitions. Second operand 3 states. [2020-09-25 07:48:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:22,875 INFO L93 Difference]: Finished difference Result 1325 states and 1635 transitions. [2020-09-25 07:48:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:22,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2020-09-25 07:48:22,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:22,881 INFO L225 Difference]: With dead ends: 1325 [2020-09-25 07:48:22,882 INFO L226 Difference]: Without dead ends: 926 [2020-09-25 07:48:22,884 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 07:48:22,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-09-25 07:48:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 924. [2020-09-25 07:48:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-09-25 07:48:22,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1123 transitions. [2020-09-25 07:48:22,913 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1123 transitions. Word has length 169 [2020-09-25 07:48:22,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:22,913 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1123 transitions. [2020-09-25 07:48:22,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:22,914 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1123 transitions. [2020-09-25 07:48:22,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 07:48:22,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:22,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:22,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:48:22,917 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:22,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:22,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1691967081, now seen corresponding path program 1 times [2020-09-25 07:48:22,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:22,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278912825] [2020-09-25 07:48:22,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:22,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:22,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:23,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:23,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:24,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:24,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:24,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 07:48:24,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:48:24,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-09-25 07:48:24,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:24,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:24,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 07:48:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:48:24,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:24,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:24,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:24,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:24,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:24,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:24,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:24,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:24,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:24,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:24,494 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 07:48:24,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278912825] [2020-09-25 07:48:24,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:24,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:24,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708180103] [2020-09-25 07:48:24,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:24,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:24,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:24,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:24,497 INFO L87 Difference]: Start difference. First operand 924 states and 1123 transitions. Second operand 4 states. [2020-09-25 07:48:24,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:24,770 INFO L93 Difference]: Finished difference Result 1852 states and 2277 transitions. [2020-09-25 07:48:24,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:24,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-09-25 07:48:24,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:24,777 INFO L225 Difference]: With dead ends: 1852 [2020-09-25 07:48:24,777 INFO L226 Difference]: Without dead ends: 1068 [2020-09-25 07:48:24,779 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 07:48:24,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-09-25 07:48:24,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 884. [2020-09-25 07:48:24,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-25 07:48:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1077 transitions. [2020-09-25 07:48:24,809 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1077 transitions. Word has length 170 [2020-09-25 07:48:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:24,810 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1077 transitions. [2020-09-25 07:48:24,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:24,810 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1077 transitions. [2020-09-25 07:48:24,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 07:48:24,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:24,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:24,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:48:24,813 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:24,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:24,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1669990880, now seen corresponding path program 1 times [2020-09-25 07:48:24,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:24,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926922273] [2020-09-25 07:48:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:24,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:24,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:24,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:25,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:25,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 07:48:25,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-09-25 07:48:25,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:25,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 07:48:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:48:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:25,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:25,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:25,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:25,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:25,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:25,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:25,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:25,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:25,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:25,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:25,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:25,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:48:25,580 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 07:48:25,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926922273] [2020-09-25 07:48:25,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:25,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:25,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501859425] [2020-09-25 07:48:25,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:25,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:25,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:25,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:25,590 INFO L87 Difference]: Start difference. First operand 884 states and 1077 transitions. Second operand 4 states. [2020-09-25 07:48:25,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:25,864 INFO L93 Difference]: Finished difference Result 1811 states and 2234 transitions. [2020-09-25 07:48:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:25,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-09-25 07:48:25,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:25,872 INFO L225 Difference]: With dead ends: 1811 [2020-09-25 07:48:25,873 INFO L226 Difference]: Without dead ends: 1067 [2020-09-25 07:48:25,876 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 07:48:25,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2020-09-25 07:48:25,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 899. [2020-09-25 07:48:25,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-09-25 07:48:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1093 transitions. [2020-09-25 07:48:25,910 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1093 transitions. Word has length 170 [2020-09-25 07:48:25,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:25,910 INFO L479 AbstractCegarLoop]: Abstraction has 899 states and 1093 transitions. [2020-09-25 07:48:25,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:25,911 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1093 transitions. [2020-09-25 07:48:25,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 07:48:25,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:25,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:25,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 07:48:25,914 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:25,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:25,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1651741770, now seen corresponding path program 1 times [2020-09-25 07:48:25,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:25,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508703316] [2020-09-25 07:48:25,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:26,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:26,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:26,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:26,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:26,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:26,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 07:48:26,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:48:26,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 939 [2020-09-25 07:48:26,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:26,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 07:48:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:48:26,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:26,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:26,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:26,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:26,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:26,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:26,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:26,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:26,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:26,939 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 07:48:26,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508703316] [2020-09-25 07:48:26,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:26,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:26,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214621605] [2020-09-25 07:48:26,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:26,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:26,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:26,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:26,941 INFO L87 Difference]: Start difference. First operand 899 states and 1093 transitions. Second operand 4 states. [2020-09-25 07:48:27,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:27,194 INFO L93 Difference]: Finished difference Result 1343 states and 1653 transitions. [2020-09-25 07:48:27,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:27,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-09-25 07:48:27,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:27,200 INFO L225 Difference]: With dead ends: 1343 [2020-09-25 07:48:27,200 INFO L226 Difference]: Without dead ends: 954 [2020-09-25 07:48:27,201 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 07:48:27,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-09-25 07:48:27,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 940. [2020-09-25 07:48:27,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-09-25 07:48:27,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1140 transitions. [2020-09-25 07:48:27,234 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1140 transitions. Word has length 171 [2020-09-25 07:48:27,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:27,234 INFO L479 AbstractCegarLoop]: Abstraction has 940 states and 1140 transitions. [2020-09-25 07:48:27,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:27,235 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1140 transitions. [2020-09-25 07:48:27,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 07:48:27,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:27,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:27,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 07:48:27,238 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:27,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:27,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1758330393, now seen corresponding path program 1 times [2020-09-25 07:48:27,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:27,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535464290] [2020-09-25 07:48:27,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:27,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:27,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:27,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:27,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:28,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 07:48:28,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:48:28,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1604 [2020-09-25 07:48:28,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:28,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:28,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:28,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 07:48:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:48:28,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:48:28,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:28,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:28,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:28,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:28,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:28,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:28,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:48:28,991 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 07:48:28,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535464290] [2020-09-25 07:48:28,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:28,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:28,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774921620] [2020-09-25 07:48:28,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:28,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:28,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:28,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:28,995 INFO L87 Difference]: Start difference. First operand 940 states and 1140 transitions. Second operand 4 states. [2020-09-25 07:48:29,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:29,354 INFO L93 Difference]: Finished difference Result 1927 states and 2365 transitions. [2020-09-25 07:48:29,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:29,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-09-25 07:48:29,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:29,364 INFO L225 Difference]: With dead ends: 1927 [2020-09-25 07:48:29,364 INFO L226 Difference]: Without dead ends: 1127 [2020-09-25 07:48:29,368 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 07:48:29,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2020-09-25 07:48:29,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 944. [2020-09-25 07:48:29,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2020-09-25 07:48:29,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1146 transitions. [2020-09-25 07:48:29,420 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1146 transitions. Word has length 171 [2020-09-25 07:48:29,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:29,421 INFO L479 AbstractCegarLoop]: Abstraction has 944 states and 1146 transitions. [2020-09-25 07:48:29,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:29,421 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1146 transitions. [2020-09-25 07:48:29,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 07:48:29,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:29,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:29,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 07:48:29,427 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:29,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:29,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1256877036, now seen corresponding path program 1 times [2020-09-25 07:48:29,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:29,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405892451] [2020-09-25 07:48:29,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:29,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:29,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:29,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:29,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:30,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:30,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:30,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 07:48:30,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:48:30,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1410 [2020-09-25 07:48:30,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:30,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:30,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:30,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 07:48:30,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:48:30,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:30,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:30,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:30,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:30,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:30,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:30,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:30,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:30,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:30,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:30,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:30,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:30,948 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 07:48:30,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405892451] [2020-09-25 07:48:30,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:30,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:30,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646755691] [2020-09-25 07:48:30,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:30,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:30,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:30,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:30,951 INFO L87 Difference]: Start difference. First operand 944 states and 1146 transitions. Second operand 4 states. [2020-09-25 07:48:31,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:31,186 INFO L93 Difference]: Finished difference Result 1922 states and 2363 transitions. [2020-09-25 07:48:31,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:31,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-09-25 07:48:31,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:31,192 INFO L225 Difference]: With dead ends: 1922 [2020-09-25 07:48:31,192 INFO L226 Difference]: Without dead ends: 1118 [2020-09-25 07:48:31,195 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 07:48:31,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2020-09-25 07:48:31,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 925. [2020-09-25 07:48:31,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2020-09-25 07:48:31,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1124 transitions. [2020-09-25 07:48:31,226 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1124 transitions. Word has length 172 [2020-09-25 07:48:31,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:31,227 INFO L479 AbstractCegarLoop]: Abstraction has 925 states and 1124 transitions. [2020-09-25 07:48:31,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:31,227 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1124 transitions. [2020-09-25 07:48:31,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 07:48:31,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:31,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:31,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 07:48:31,231 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:31,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:31,231 INFO L82 PathProgramCache]: Analyzing trace with hash -978509581, now seen corresponding path program 1 times [2020-09-25 07:48:31,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:31,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988118793] [2020-09-25 07:48:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:31,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:31,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:31,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:31,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:32,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:33,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:33,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 07:48:33,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:48:33,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2170 [2020-09-25 07:48:33,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:33,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 07:48:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:48:33,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:33,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:33,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:33,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:33,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:33,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:33,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:33,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:33,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:33,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:33,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:33,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:33,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:33,485 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 07:48:33,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988118793] [2020-09-25 07:48:33,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:33,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:33,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279579734] [2020-09-25 07:48:33,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:33,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:33,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:33,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:33,488 INFO L87 Difference]: Start difference. First operand 925 states and 1124 transitions. Second operand 4 states. [2020-09-25 07:48:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:33,759 INFO L93 Difference]: Finished difference Result 1911 states and 2349 transitions. [2020-09-25 07:48:33,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:33,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-09-25 07:48:33,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:33,767 INFO L225 Difference]: With dead ends: 1911 [2020-09-25 07:48:33,768 INFO L226 Difference]: Without dead ends: 1126 [2020-09-25 07:48:33,777 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 07:48:33,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2020-09-25 07:48:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 952. [2020-09-25 07:48:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-09-25 07:48:33,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1154 transitions. [2020-09-25 07:48:33,825 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1154 transitions. Word has length 173 [2020-09-25 07:48:33,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:33,825 INFO L479 AbstractCegarLoop]: Abstraction has 952 states and 1154 transitions. [2020-09-25 07:48:33,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:33,826 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1154 transitions. [2020-09-25 07:48:33,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 07:48:33,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:33,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:33,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 07:48:33,829 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:33,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:33,830 INFO L82 PathProgramCache]: Analyzing trace with hash 310644027, now seen corresponding path program 1 times [2020-09-25 07:48:33,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:33,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880714761] [2020-09-25 07:48:33,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:33,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:33,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:34,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:34,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:34,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:34,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:36,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:36,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 07:48:36,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:48:36,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2702 [2020-09-25 07:48:36,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:36,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 07:48:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:48:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:36,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:36,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:36,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:36,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:36,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:36,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:36,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:36,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:36,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:36,635 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 07:48:36,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880714761] [2020-09-25 07:48:36,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:36,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:36,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761455065] [2020-09-25 07:48:36,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:36,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:36,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:36,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:36,637 INFO L87 Difference]: Start difference. First operand 952 states and 1154 transitions. Second operand 4 states. [2020-09-25 07:48:36,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:36,868 INFO L93 Difference]: Finished difference Result 1900 states and 2333 transitions. [2020-09-25 07:48:36,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:36,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-09-25 07:48:36,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:36,875 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 07:48:36,875 INFO L226 Difference]: Without dead ends: 1088 [2020-09-25 07:48:36,877 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 07:48:36,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2020-09-25 07:48:36,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 952. [2020-09-25 07:48:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-09-25 07:48:36,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1154 transitions. [2020-09-25 07:48:36,907 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1154 transitions. Word has length 173 [2020-09-25 07:48:36,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:36,908 INFO L479 AbstractCegarLoop]: Abstraction has 952 states and 1154 transitions. [2020-09-25 07:48:36,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:36,908 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1154 transitions. [2020-09-25 07:48:36,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 07:48:36,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:36,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:36,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 07:48:36,912 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:36,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:36,912 INFO L82 PathProgramCache]: Analyzing trace with hash -33516338, now seen corresponding path program 1 times [2020-09-25 07:48:36,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:36,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752571701] [2020-09-25 07:48:36,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:36,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:37,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:37,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:37,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:38,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:38,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:38,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 07:48:38,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:48:38,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1673 [2020-09-25 07:48:38,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:38,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 07:48:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:48:38,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:48:38,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:38,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:38,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:38,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:38,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:38,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:38,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:38,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:38,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:38,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:38,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:38,672 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 07:48:38,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752571701] [2020-09-25 07:48:38,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:38,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:38,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766850089] [2020-09-25 07:48:38,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:38,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:38,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:38,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:38,674 INFO L87 Difference]: Start difference. First operand 952 states and 1154 transitions. Second operand 4 states. [2020-09-25 07:48:38,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:38,902 INFO L93 Difference]: Finished difference Result 1940 states and 2381 transitions. [2020-09-25 07:48:38,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:38,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-09-25 07:48:38,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:38,908 INFO L225 Difference]: With dead ends: 1940 [2020-09-25 07:48:38,909 INFO L226 Difference]: Without dead ends: 1128 [2020-09-25 07:48:38,911 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 07:48:38,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2020-09-25 07:48:38,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 925. [2020-09-25 07:48:38,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2020-09-25 07:48:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1124 transitions. [2020-09-25 07:48:38,941 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1124 transitions. Word has length 174 [2020-09-25 07:48:38,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:38,942 INFO L479 AbstractCegarLoop]: Abstraction has 925 states and 1124 transitions. [2020-09-25 07:48:38,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:38,942 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1124 transitions. [2020-09-25 07:48:38,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 07:48:38,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:38,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:38,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 07:48:38,946 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:38,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:38,946 INFO L82 PathProgramCache]: Analyzing trace with hash -99229899, now seen corresponding path program 1 times [2020-09-25 07:48:38,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:38,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42115650] [2020-09-25 07:48:38,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:39,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:39,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:39,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:39,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:39,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:39,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:42,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:42,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 07:48:42,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:48:42,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3842 [2020-09-25 07:48:42,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:42,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:42,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:42,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-09-25 07:48:42,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:48:42,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:42,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:42,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:42,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:42,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:42,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:42,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:42,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:42,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:42,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:43,029 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 07:48:43,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42115650] [2020-09-25 07:48:43,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:43,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:43,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510655046] [2020-09-25 07:48:43,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:43,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:43,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:43,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:43,031 INFO L87 Difference]: Start difference. First operand 925 states and 1124 transitions. Second operand 3 states. [2020-09-25 07:48:43,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:43,105 INFO L93 Difference]: Finished difference Result 2443 states and 3016 transitions. [2020-09-25 07:48:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:43,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2020-09-25 07:48:43,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:43,116 INFO L225 Difference]: With dead ends: 2443 [2020-09-25 07:48:43,116 INFO L226 Difference]: Without dead ends: 1658 [2020-09-25 07:48:43,119 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 07:48:43,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2020-09-25 07:48:43,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 960. [2020-09-25 07:48:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-09-25 07:48:43,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1172 transitions. [2020-09-25 07:48:43,188 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1172 transitions. Word has length 180 [2020-09-25 07:48:43,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:43,189 INFO L479 AbstractCegarLoop]: Abstraction has 960 states and 1172 transitions. [2020-09-25 07:48:43,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:43,190 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1172 transitions. [2020-09-25 07:48:43,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 07:48:43,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:43,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:43,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 07:48:43,199 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:43,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:43,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1893768638, now seen corresponding path program 1 times [2020-09-25 07:48:43,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:43,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409718771] [2020-09-25 07:48:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:43,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:43,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:43,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:43,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:43,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 07:48:43,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:43,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-09-25 07:48:43,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:43,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:43,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:48:43,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:48:43,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-25 07:48:43,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:43,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:43,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:43,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:43,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:43,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:43,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:43,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:43,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:43,875 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 07:48:43,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409718771] [2020-09-25 07:48:43,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:43,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:48:43,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410988714] [2020-09-25 07:48:43,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:48:43,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:43,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:48:43,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:48:43,878 INFO L87 Difference]: Start difference. First operand 960 states and 1172 transitions. Second operand 7 states. [2020-09-25 07:48:44,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:44,144 INFO L93 Difference]: Finished difference Result 1477 states and 1831 transitions. [2020-09-25 07:48:44,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:48:44,145 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-25 07:48:44,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:44,149 INFO L225 Difference]: With dead ends: 1477 [2020-09-25 07:48:44,149 INFO L226 Difference]: Without dead ends: 657 [2020-09-25 07:48:44,151 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 07:48:44,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-25 07:48:44,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 636. [2020-09-25 07:48:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-09-25 07:48:44,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 762 transitions. [2020-09-25 07:48:44,175 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 762 transitions. Word has length 182 [2020-09-25 07:48:44,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:44,175 INFO L479 AbstractCegarLoop]: Abstraction has 636 states and 762 transitions. [2020-09-25 07:48:44,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:48:44,175 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 762 transitions. [2020-09-25 07:48:44,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 07:48:44,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:44,179 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 07:48:44,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 07:48:44,179 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:44,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:44,180 INFO L82 PathProgramCache]: Analyzing trace with hash -460420793, now seen corresponding path program 1 times [2020-09-25 07:48:44,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:44,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521028060] [2020-09-25 07:48:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:44,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:44,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:44,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:44,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:44,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 07:48:44,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:44,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-25 07:48:44,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:44,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:44,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:44,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 07:48:44,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:48:44,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:44,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:44,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:44,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:44,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:44,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:44,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:44,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:44,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:44,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:48:44,609 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 07:48:44,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521028060] [2020-09-25 07:48:44,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:44,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:44,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964902122] [2020-09-25 07:48:44,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:44,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:44,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:44,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:44,613 INFO L87 Difference]: Start difference. First operand 636 states and 762 transitions. Second operand 3 states. [2020-09-25 07:48:44,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:44,703 INFO L93 Difference]: Finished difference Result 1585 states and 1955 transitions. [2020-09-25 07:48:44,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:44,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-09-25 07:48:44,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:44,709 INFO L225 Difference]: With dead ends: 1585 [2020-09-25 07:48:44,710 INFO L226 Difference]: Without dead ends: 1105 [2020-09-25 07:48:44,714 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 07:48:44,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-09-25 07:48:44,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1103. [2020-09-25 07:48:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-09-25 07:48:44,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1343 transitions. [2020-09-25 07:48:44,760 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1343 transitions. Word has length 196 [2020-09-25 07:48:44,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:44,761 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1343 transitions. [2020-09-25 07:48:44,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:44,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1343 transitions. [2020-09-25 07:48:44,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 07:48:44,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:44,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:44,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 07:48:44,765 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:44,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:44,766 INFO L82 PathProgramCache]: Analyzing trace with hash -248337803, now seen corresponding path program 1 times [2020-09-25 07:48:44,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:44,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705316032] [2020-09-25 07:48:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:44,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:44,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:45,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:45,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 07:48:45,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:45,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-09-25 07:48:45,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:45,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:45,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:45,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 07:48:45,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:48:45,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:45,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:45,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:45,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:45,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:45,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:45,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:45,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:45,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:45,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:45,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:45,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:45,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:45,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705316032] [2020-09-25 07:48:45,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:48:45,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 07:48:45,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994004421] [2020-09-25 07:48:45,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:45,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:45,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:45,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:45,203 INFO L87 Difference]: Start difference. First operand 1103 states and 1343 transitions. Second operand 4 states. [2020-09-25 07:48:45,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:45,496 INFO L93 Difference]: Finished difference Result 2577 states and 3229 transitions. [2020-09-25 07:48:45,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:45,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2020-09-25 07:48:45,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:45,504 INFO L225 Difference]: With dead ends: 2577 [2020-09-25 07:48:45,504 INFO L226 Difference]: Without dead ends: 1598 [2020-09-25 07:48:45,507 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 07:48:45,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2020-09-25 07:48:45,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1258. [2020-09-25 07:48:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2020-09-25 07:48:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1542 transitions. [2020-09-25 07:48:45,563 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1542 transitions. Word has length 208 [2020-09-25 07:48:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:45,563 INFO L479 AbstractCegarLoop]: Abstraction has 1258 states and 1542 transitions. [2020-09-25 07:48:45,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:45,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1542 transitions. [2020-09-25 07:48:45,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 07:48:45,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:45,568 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:45,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 07:48:45,569 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:45,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:45,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1941211029, now seen corresponding path program 1 times [2020-09-25 07:48:45,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:45,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073546873] [2020-09-25 07:48:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:45,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:45,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:45,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:46,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:46,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 07:48:46,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:46,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-09-25 07:48:46,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:46,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:46,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:48:46,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 07:48:46,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 07:48:46,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:46,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:46,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:46,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:46,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:46,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:46,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:46,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:46,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:46,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:46,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:46,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:46,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:46,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073546873] [2020-09-25 07:48:46,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:48:46,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:48:46,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569474433] [2020-09-25 07:48:46,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:48:46,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:46,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:48:46,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:48:46,233 INFO L87 Difference]: Start difference. First operand 1258 states and 1542 transitions. Second operand 5 states. [2020-09-25 07:48:46,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:46,696 INFO L93 Difference]: Finished difference Result 3867 states and 4845 transitions. [2020-09-25 07:48:46,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:48:46,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-09-25 07:48:46,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:46,710 INFO L225 Difference]: With dead ends: 3867 [2020-09-25 07:48:46,710 INFO L226 Difference]: Without dead ends: 2665 [2020-09-25 07:48:46,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:48:46,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2020-09-25 07:48:46,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 1296. [2020-09-25 07:48:46,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1296 states. [2020-09-25 07:48:46,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1592 transitions. [2020-09-25 07:48:46,799 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1592 transitions. Word has length 216 [2020-09-25 07:48:46,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:46,800 INFO L479 AbstractCegarLoop]: Abstraction has 1296 states and 1592 transitions. [2020-09-25 07:48:46,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:48:46,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1592 transitions. [2020-09-25 07:48:46,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 07:48:46,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:46,809 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:46,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 07:48:46,810 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:46,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:46,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1995787975, now seen corresponding path program 1 times [2020-09-25 07:48:46,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:46,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780172935] [2020-09-25 07:48:46,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:46,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:46,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:47,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 07:48:47,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:48:47,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 07:48:47,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:47,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-09-25 07:48:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:48:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:47,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:47,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:47,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:47,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:47,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:47,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:47,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:47,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:48:47,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780172935] [2020-09-25 07:48:47,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:47,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:47,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257061544] [2020-09-25 07:48:47,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:47,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:47,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:47,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:47,249 INFO L87 Difference]: Start difference. First operand 1296 states and 1592 transitions. Second operand 3 states. [2020-09-25 07:48:47,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:47,361 INFO L93 Difference]: Finished difference Result 3001 states and 3739 transitions. [2020-09-25 07:48:47,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:47,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-09-25 07:48:47,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:47,369 INFO L225 Difference]: With dead ends: 3001 [2020-09-25 07:48:47,370 INFO L226 Difference]: Without dead ends: 1861 [2020-09-25 07:48:47,373 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 07:48:47,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2020-09-25 07:48:47,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1859. [2020-09-25 07:48:47,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1859 states. [2020-09-25 07:48:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2299 transitions. [2020-09-25 07:48:47,439 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2299 transitions. Word has length 224 [2020-09-25 07:48:47,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:47,439 INFO L479 AbstractCegarLoop]: Abstraction has 1859 states and 2299 transitions. [2020-09-25 07:48:47,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2299 transitions. [2020-09-25 07:48:47,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 07:48:47,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:47,445 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:47,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 07:48:47,445 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:47,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:47,446 INFO L82 PathProgramCache]: Analyzing trace with hash 309373079, now seen corresponding path program 1 times [2020-09-25 07:48:47,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:47,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591839330] [2020-09-25 07:48:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:47,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:48,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:48,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 07:48:48,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:48,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-09-25 07:48:48,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:48,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 07:48:48,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:48:48,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:48,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:48,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:48,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:48,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:48,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:48,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:48,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:48,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:48,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:48,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:48,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:48,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:48:48,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591839330] [2020-09-25 07:48:48,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:48:48,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 07:48:48,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533412834] [2020-09-25 07:48:48,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:48,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:48,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:48,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:48,130 INFO L87 Difference]: Start difference. First operand 1859 states and 2299 transitions. Second operand 4 states. [2020-09-25 07:48:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:48,442 INFO L93 Difference]: Finished difference Result 4364 states and 5491 transitions. [2020-09-25 07:48:48,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:48,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 235 [2020-09-25 07:48:48,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:48,454 INFO L225 Difference]: With dead ends: 4364 [2020-09-25 07:48:48,454 INFO L226 Difference]: Without dead ends: 2505 [2020-09-25 07:48:48,458 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 07:48:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2020-09-25 07:48:48,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2175. [2020-09-25 07:48:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2175 states. [2020-09-25 07:48:48,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 2685 transitions. [2020-09-25 07:48:48,542 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 2685 transitions. Word has length 235 [2020-09-25 07:48:48,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:48,543 INFO L479 AbstractCegarLoop]: Abstraction has 2175 states and 2685 transitions. [2020-09-25 07:48:48,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:48,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 2685 transitions. [2020-09-25 07:48:48,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 07:48:48,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:48,549 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:48,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-25 07:48:48,550 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:48,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:48,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1135250487, now seen corresponding path program 1 times [2020-09-25 07:48:48,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:48,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368772596] [2020-09-25 07:48:48,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:48,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:48,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:48,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:48,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:49,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:49,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 07:48:49,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:48:49,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-09-25 07:48:49,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:49,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:48:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 07:48:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:48:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:49,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:49,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:49,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:49,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:49,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:49,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:49,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:49,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:49,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:48:49,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368772596] [2020-09-25 07:48:49,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:48:49,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 07:48:49,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726973938] [2020-09-25 07:48:49,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:49,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:49,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:49,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:49,428 INFO L87 Difference]: Start difference. First operand 2175 states and 2685 transitions. Second operand 4 states. [2020-09-25 07:48:49,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:49,686 INFO L93 Difference]: Finished difference Result 4568 states and 5708 transitions. [2020-09-25 07:48:49,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:48:49,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 235 [2020-09-25 07:48:49,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:49,697 INFO L225 Difference]: With dead ends: 4568 [2020-09-25 07:48:49,698 INFO L226 Difference]: Without dead ends: 2453 [2020-09-25 07:48:49,702 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 07:48:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2453 states. [2020-09-25 07:48:49,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2453 to 2313. [2020-09-25 07:48:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2313 states. [2020-09-25 07:48:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 2846 transitions. [2020-09-25 07:48:49,789 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 2846 transitions. Word has length 235 [2020-09-25 07:48:49,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:49,790 INFO L479 AbstractCegarLoop]: Abstraction has 2313 states and 2846 transitions. [2020-09-25 07:48:49,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:49,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 2846 transitions. [2020-09-25 07:48:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 07:48:49,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:49,797 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:49,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-25 07:48:49,797 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:49,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:49,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1624554569, now seen corresponding path program 1 times [2020-09-25 07:48:49,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:49,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304694061] [2020-09-25 07:48:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:49,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:49,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:50,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:50,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:50,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-25 07:48:50,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:48:50,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-09-25 07:48:50,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:50,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:50,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:50,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 07:48:50,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:48:50,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:50,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:50,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:50,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:50,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:50,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:50,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:50,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:50,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:50,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:50,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:50,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:50,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:48:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 07:48:50,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304694061] [2020-09-25 07:48:50,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:50,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:50,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971680534] [2020-09-25 07:48:50,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:50,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:50,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:50,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:50,954 INFO L87 Difference]: Start difference. First operand 2313 states and 2846 transitions. Second operand 3 states. [2020-09-25 07:48:51,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:51,075 INFO L93 Difference]: Finished difference Result 3812 states and 4712 transitions. [2020-09-25 07:48:51,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:51,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 243 [2020-09-25 07:48:51,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:51,081 INFO L225 Difference]: With dead ends: 3812 [2020-09-25 07:48:51,081 INFO L226 Difference]: Without dead ends: 1655 [2020-09-25 07:48:51,085 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 07:48:51,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2020-09-25 07:48:51,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1655. [2020-09-25 07:48:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1655 states. [2020-09-25 07:48:51,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2025 transitions. [2020-09-25 07:48:51,154 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2025 transitions. Word has length 243 [2020-09-25 07:48:51,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:51,155 INFO L479 AbstractCegarLoop]: Abstraction has 1655 states and 2025 transitions. [2020-09-25 07:48:51,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:51,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2025 transitions. [2020-09-25 07:48:51,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 07:48:51,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:51,161 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:51,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-25 07:48:51,162 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:51,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:51,163 INFO L82 PathProgramCache]: Analyzing trace with hash -662598379, now seen corresponding path program 1 times [2020-09-25 07:48:51,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:51,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816686918] [2020-09-25 07:48:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:51,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking...