/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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:57:00,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:57:00,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:57:00,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:57:00,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:57:00,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:57:00,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:57:00,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:57:00,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:57:00,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:57:00,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:57:00,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:57:00,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:57:00,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:57:00,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:57:00,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:57:00,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:57:00,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:57:00,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:57:00,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:57:00,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:57:00,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:57:00,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:57:00,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:57:00,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:57:00,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:57:00,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:57:00,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:57:00,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:57:00,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:57:00,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:57:00,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:57:00,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:57:00,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:57:00,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:57:00,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:57:00,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:57:00,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:57:00,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:57:00,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:57:00,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:57:00,261 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 08:57:00,300 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:57:00,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:57:00,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:57:00,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:57:00,303 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:57:00,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:57:00,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:57:00,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:57:00,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:57:00,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:57:00,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:57:00,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:57:00,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:57:00,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:57:00,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:57:00,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:57:00,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:57:00,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:57:00,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:57:00,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:57:00,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:57:00,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:57:00,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:57:00,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:57:00,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:57:00,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:57:00,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:57:00,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:57:00,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:57:00,312 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 08:57:00,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:57:00,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:57:00,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:57:00,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:57:00,835 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:57:00,837 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 08:57:00,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a6484052/eda6fa52f5fe47e8a54a382d7e55e954/FLAGda2360339 [2020-09-25 08:57:01,567 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:57:01,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 08:57:01,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a6484052/eda6fa52f5fe47e8a54a382d7e55e954/FLAGda2360339 [2020-09-25 08:57:01,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a6484052/eda6fa52f5fe47e8a54a382d7e55e954 [2020-09-25 08:57:01,845 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:57:01,855 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:57:01,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:57:01,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:57:01,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:57:01,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:57:01" (1/1) ... [2020-09-25 08:57:01,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603503a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:01, skipping insertion in model container [2020-09-25 08:57:01,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:57:01" (1/1) ... [2020-09-25 08:57:01,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:57:01,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:57:02,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:57:02,279 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:57:02,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:57:02,483 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:57:02,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:02 WrapperNode [2020-09-25 08:57:02,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:57:02,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:57:02,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:57:02,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:57:02,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:02" (1/1) ... [2020-09-25 08:57:02,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:02" (1/1) ... [2020-09-25 08:57:02,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:02" (1/1) ... [2020-09-25 08:57:02,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:02" (1/1) ... [2020-09-25 08:57:02,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:02" (1/1) ... [2020-09-25 08:57:02,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:02" (1/1) ... [2020-09-25 08:57:02,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:02" (1/1) ... [2020-09-25 08:57:02,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:57:02,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:57:02,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:57:02,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:57:02,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:02" (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 08:57:02,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:57:02,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:57:02,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 08:57:02,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:57:02,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:57:02,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 08:57:02,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:57:02,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 08:57:02,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-25 08:57:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 08:57:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:57:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:57:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:57:02,884 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 08:57:03,686 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 08:57:03,688 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 08:57:03,722 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:57:03,722 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 08:57:03,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:57:03 BoogieIcfgContainer [2020-09-25 08:57:03,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:57:03,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:57:03,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:57:03,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:57:03,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:57:01" (1/3) ... [2020-09-25 08:57:03,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb45c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:57:03, skipping insertion in model container [2020-09-25 08:57:03,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:02" (2/3) ... [2020-09-25 08:57:03,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb45c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:57:03, skipping insertion in model container [2020-09-25 08:57:03,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:57:03" (3/3) ... [2020-09-25 08:57:03,755 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-09-25 08:57:03,767 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:57:03,782 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:57:03,805 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:57:03,848 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:57:03,848 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:57:03,848 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:57:03,849 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:57:03,849 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:57:03,849 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:57:03,849 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:57:03,850 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:57:03,881 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states. [2020-09-25 08:57:03,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 08:57:03,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:03,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:03,915 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:03,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:03,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1996743066, now seen corresponding path program 1 times [2020-09-25 08:57:03,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:03,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264346985] [2020-09-25 08:57:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:04,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:04,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:05,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:05,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:05,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 08:57:05,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:57:05,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1431 [2020-09-25 08:57:05,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:05,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:05,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:05,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 08:57:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:57:05,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:57:05,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:05,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:05,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:05,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:05,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:05,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:57:05,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:05,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:05,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:05,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:05,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:05,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:05,776 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 08:57:05,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264346985] [2020-09-25 08:57:05,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:05,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:05,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486819823] [2020-09-25 08:57:05,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:05,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:05,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:05,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:05,813 INFO L87 Difference]: Start difference. First operand 471 states. Second operand 4 states. [2020-09-25 08:57:06,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:06,236 INFO L93 Difference]: Finished difference Result 893 states and 1167 transitions. [2020-09-25 08:57:06,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:06,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-09-25 08:57:06,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:06,261 INFO L225 Difference]: With dead ends: 893 [2020-09-25 08:57:06,261 INFO L226 Difference]: Without dead ends: 501 [2020-09-25 08:57:06,268 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 08:57:06,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-09-25 08:57:06,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 465. [2020-09-25 08:57:06,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-09-25 08:57:06,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 563 transitions. [2020-09-25 08:57:06,359 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 563 transitions. Word has length 161 [2020-09-25 08:57:06,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:06,360 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 563 transitions. [2020-09-25 08:57:06,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 563 transitions. [2020-09-25 08:57:06,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 08:57:06,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:06,366 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 08:57:06,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:57:06,366 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:06,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:06,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1922098023, now seen corresponding path program 1 times [2020-09-25 08:57:06,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:06,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566771997] [2020-09-25 08:57:06,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:06,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:06,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:06,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:06,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:06,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:06,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:08,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:08,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:08,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 08:57:08,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:57:08,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2193 [2020-09-25 08:57:08,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:08,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:08,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:08,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 08:57:08,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:57:08,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:08,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:08,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:08,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:08,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:08,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:08,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:08,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:08,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:08,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 08:57:08,692 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 08:57:08,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566771997] [2020-09-25 08:57:08,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:08,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:08,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572699920] [2020-09-25 08:57:08,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:08,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:08,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:08,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:08,699 INFO L87 Difference]: Start difference. First operand 465 states and 563 transitions. Second operand 4 states. [2020-09-25 08:57:08,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:08,956 INFO L93 Difference]: Finished difference Result 824 states and 1023 transitions. [2020-09-25 08:57:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:08,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-09-25 08:57:08,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:08,961 INFO L225 Difference]: With dead ends: 824 [2020-09-25 08:57:08,961 INFO L226 Difference]: Without dead ends: 498 [2020-09-25 08:57:08,963 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 08:57:08,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-09-25 08:57:08,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 441. [2020-09-25 08:57:08,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-09-25 08:57:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 536 transitions. [2020-09-25 08:57:08,985 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 536 transitions. Word has length 167 [2020-09-25 08:57:08,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:08,986 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 536 transitions. [2020-09-25 08:57:08,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:08,986 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 536 transitions. [2020-09-25 08:57:08,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 08:57:08,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:08,990 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 08:57:08,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:57:08,990 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:08,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:08,991 INFO L82 PathProgramCache]: Analyzing trace with hash -2025816329, now seen corresponding path program 1 times [2020-09-25 08:57:08,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:08,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483124555] [2020-09-25 08:57:08,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:09,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:09,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:09,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:09,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:10,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:10,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 08:57:10,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:57:10,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1677 [2020-09-25 08:57:10,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:10,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 08:57:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 08:57:10,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:10,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:10,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:10,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:10,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:10,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:10,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:10,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:10,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:10,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:10,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:10,802 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 08:57:10,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483124555] [2020-09-25 08:57:10,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:10,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:10,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290687748] [2020-09-25 08:57:10,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:10,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:10,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:10,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:10,805 INFO L87 Difference]: Start difference. First operand 441 states and 536 transitions. Second operand 4 states. [2020-09-25 08:57:11,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:11,041 INFO L93 Difference]: Finished difference Result 792 states and 997 transitions. [2020-09-25 08:57:11,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:11,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-09-25 08:57:11,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:11,045 INFO L225 Difference]: With dead ends: 792 [2020-09-25 08:57:11,046 INFO L226 Difference]: Without dead ends: 490 [2020-09-25 08:57:11,047 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 08:57:11,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-09-25 08:57:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 479. [2020-09-25 08:57:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 08:57:11,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 581 transitions. [2020-09-25 08:57:11,064 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 581 transitions. Word has length 172 [2020-09-25 08:57:11,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:11,065 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 581 transitions. [2020-09-25 08:57:11,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:11,065 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 581 transitions. [2020-09-25 08:57:11,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 08:57:11,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:11,068 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 08:57:11,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:57:11,069 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:11,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:11,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1867249191, now seen corresponding path program 1 times [2020-09-25 08:57:11,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:11,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924952818] [2020-09-25 08:57:11,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:11,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:11,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:11,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:11,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:12,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:12,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:12,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 08:57:12,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:57:12,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1296 [2020-09-25 08:57:12,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:12,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 08:57:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:57:12,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:12,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:12,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:12,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:12,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:12,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:12,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:12,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:12,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:12,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:12,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:12,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:57:12,498 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 08:57:12,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924952818] [2020-09-25 08:57:12,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:12,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:12,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595897470] [2020-09-25 08:57:12,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:12,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:12,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:12,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:12,503 INFO L87 Difference]: Start difference. First operand 479 states and 581 transitions. Second operand 4 states. [2020-09-25 08:57:12,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:12,749 INFO L93 Difference]: Finished difference Result 885 states and 1098 transitions. [2020-09-25 08:57:12,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:12,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-09-25 08:57:12,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:12,753 INFO L225 Difference]: With dead ends: 885 [2020-09-25 08:57:12,753 INFO L226 Difference]: Without dead ends: 545 [2020-09-25 08:57:12,755 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 08:57:12,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-09-25 08:57:12,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 479. [2020-09-25 08:57:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 08:57:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 581 transitions. [2020-09-25 08:57:12,775 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 581 transitions. Word has length 173 [2020-09-25 08:57:12,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:12,776 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 581 transitions. [2020-09-25 08:57:12,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:12,776 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 581 transitions. [2020-09-25 08:57:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 08:57:12,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:12,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:12,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:57:12,780 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:12,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:12,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1166211591, now seen corresponding path program 1 times [2020-09-25 08:57:12,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:12,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731760792] [2020-09-25 08:57:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:12,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:12,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:13,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:13,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:13,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:13,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:13,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 08:57:16,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:57:16,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3823 [2020-09-25 08:57:16,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:16,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 08:57:16,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:57:16,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:57:16,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:16,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:16,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:16,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:57:16,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:16,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:16,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:16,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:16,699 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 08:57:16,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731760792] [2020-09-25 08:57:16,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:16,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:16,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718257874] [2020-09-25 08:57:16,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:16,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:16,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:16,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:16,703 INFO L87 Difference]: Start difference. First operand 479 states and 581 transitions. Second operand 4 states. [2020-09-25 08:57:16,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:16,999 INFO L93 Difference]: Finished difference Result 943 states and 1172 transitions. [2020-09-25 08:57:17,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:17,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-09-25 08:57:17,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:17,005 INFO L225 Difference]: With dead ends: 943 [2020-09-25 08:57:17,005 INFO L226 Difference]: Without dead ends: 603 [2020-09-25 08:57:17,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:17,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-09-25 08:57:17,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 510. [2020-09-25 08:57:17,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-09-25 08:57:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 618 transitions. [2020-09-25 08:57:17,030 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 618 transitions. Word has length 174 [2020-09-25 08:57:17,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:17,031 INFO L479 AbstractCegarLoop]: Abstraction has 510 states and 618 transitions. [2020-09-25 08:57:17,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:17,031 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 618 transitions. [2020-09-25 08:57:17,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 08:57:17,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:17,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:17,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:57:17,037 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:17,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:17,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1768045815, now seen corresponding path program 1 times [2020-09-25 08:57:17,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:17,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603911696] [2020-09-25 08:57:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:17,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:17,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:17,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:17,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:17,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:19,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:20,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:20,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 08:57:20,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:57:20,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3040 [2020-09-25 08:57:20,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:20,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:20,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:20,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 08:57:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:57:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:57:20,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:20,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:20,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:20,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:20,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:20,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:20,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:20,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:20,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:20,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:20,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:20,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:20,163 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 08:57:20,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603911696] [2020-09-25 08:57:20,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:20,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:20,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669048780] [2020-09-25 08:57:20,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:20,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:20,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:20,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:20,166 INFO L87 Difference]: Start difference. First operand 510 states and 618 transitions. Second operand 4 states. [2020-09-25 08:57:20,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:20,420 INFO L93 Difference]: Finished difference Result 974 states and 1209 transitions. [2020-09-25 08:57:20,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:20,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-09-25 08:57:20,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:20,426 INFO L225 Difference]: With dead ends: 974 [2020-09-25 08:57:20,427 INFO L226 Difference]: Without dead ends: 603 [2020-09-25 08:57:20,429 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 08:57:20,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-09-25 08:57:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 479. [2020-09-25 08:57:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 08:57:20,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 581 transitions. [2020-09-25 08:57:20,451 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 581 transitions. Word has length 175 [2020-09-25 08:57:20,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:20,452 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 581 transitions. [2020-09-25 08:57:20,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:20,452 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 581 transitions. [2020-09-25 08:57:20,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 08:57:20,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:20,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:20,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:57:20,457 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:20,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:20,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1172377495, now seen corresponding path program 1 times [2020-09-25 08:57:20,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:20,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239868306] [2020-09-25 08:57:20,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:20,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:20,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:20,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:20,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:20,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 08:57:20,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:20,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-09-25 08:57:20,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:20,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:20,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:20,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 08:57:20,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 08:57:20,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:20,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:21,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:21,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:21,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:21,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:21,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:21,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:21,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:21,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:21,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:21,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:21,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:57:21,031 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 08:57:21,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239868306] [2020-09-25 08:57:21,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:21,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:21,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65891875] [2020-09-25 08:57:21,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:21,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:21,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:21,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:21,035 INFO L87 Difference]: Start difference. First operand 479 states and 581 transitions. Second operand 3 states. [2020-09-25 08:57:21,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:21,224 INFO L93 Difference]: Finished difference Result 1137 states and 1435 transitions. [2020-09-25 08:57:21,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:21,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2020-09-25 08:57:21,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:21,229 INFO L225 Difference]: With dead ends: 1137 [2020-09-25 08:57:21,230 INFO L226 Difference]: Without dead ends: 797 [2020-09-25 08:57:21,232 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 08:57:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-09-25 08:57:21,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 795. [2020-09-25 08:57:21,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-09-25 08:57:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 973 transitions. [2020-09-25 08:57:21,258 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 973 transitions. Word has length 176 [2020-09-25 08:57:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:21,258 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 973 transitions. [2020-09-25 08:57:21,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 973 transitions. [2020-09-25 08:57:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 08:57:21,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:21,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:21,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:57:21,262 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:21,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:21,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1059203184, now seen corresponding path program 1 times [2020-09-25 08:57:21,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:21,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720790317] [2020-09-25 08:57:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:21,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:21,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:21,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:21,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:21,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 08:57:21,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:21,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-09-25 08:57:21,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:21,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:57:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 08:57:21,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 08:57:21,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:21,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:21,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:21,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:21,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:21,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:21,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:21,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:21,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:21,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:21,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:22,068 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 08:57:22,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720790317] [2020-09-25 08:57:22,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:22,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 08:57:22,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101106397] [2020-09-25 08:57:22,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:57:22,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:22,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:57:22,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:57:22,072 INFO L87 Difference]: Start difference. First operand 795 states and 973 transitions. Second operand 7 states. [2020-09-25 08:57:22,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:22,721 INFO L93 Difference]: Finished difference Result 2115 states and 2636 transitions. [2020-09-25 08:57:22,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:57:22,722 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-09-25 08:57:22,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:22,730 INFO L225 Difference]: With dead ends: 2115 [2020-09-25 08:57:22,730 INFO L226 Difference]: Without dead ends: 1459 [2020-09-25 08:57:22,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:57:22,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2020-09-25 08:57:22,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1057. [2020-09-25 08:57:22,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1057 states. [2020-09-25 08:57:22,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1330 transitions. [2020-09-25 08:57:22,784 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1330 transitions. Word has length 179 [2020-09-25 08:57:22,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:22,785 INFO L479 AbstractCegarLoop]: Abstraction has 1057 states and 1330 transitions. [2020-09-25 08:57:22,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:57:22,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1330 transitions. [2020-09-25 08:57:22,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 08:57:22,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:22,793 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:22,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:57:22,794 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:22,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:22,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1625465716, now seen corresponding path program 1 times [2020-09-25 08:57:22,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:22,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263371599] [2020-09-25 08:57:22,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:22,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:22,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:22,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 08:57:23,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:23,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-25 08:57:23,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 08:57:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 08:57:23,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:23,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:23,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:23,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:23,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:23,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,190 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 08:57:23,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263371599] [2020-09-25 08:57:23,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:23,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:23,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781585846] [2020-09-25 08:57:23,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:23,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:23,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:23,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:23,192 INFO L87 Difference]: Start difference. First operand 1057 states and 1330 transitions. Second operand 3 states. [2020-09-25 08:57:23,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:23,371 INFO L93 Difference]: Finished difference Result 1977 states and 2558 transitions. [2020-09-25 08:57:23,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:23,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2020-09-25 08:57:23,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:23,379 INFO L225 Difference]: With dead ends: 1977 [2020-09-25 08:57:23,379 INFO L226 Difference]: Without dead ends: 1498 [2020-09-25 08:57:23,380 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 08:57:23,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-09-25 08:57:23,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1496. [2020-09-25 08:57:23,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2020-09-25 08:57:23,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1886 transitions. [2020-09-25 08:57:23,424 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1886 transitions. Word has length 202 [2020-09-25 08:57:23,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:23,425 INFO L479 AbstractCegarLoop]: Abstraction has 1496 states and 1886 transitions. [2020-09-25 08:57:23,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:23,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1886 transitions. [2020-09-25 08:57:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 08:57:23,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:23,429 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:23,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:57:23,430 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:23,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1593461350, now seen corresponding path program 1 times [2020-09-25 08:57:23,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:23,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044016566] [2020-09-25 08:57:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:23,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:24,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 08:57:24,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:24,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1335 [2020-09-25 08:57:24,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:24,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:57:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 08:57:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 08:57:24,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:24,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:24,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:24,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:24,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:24,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:24,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:24,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:24,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:24,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 08:57:24,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044016566] [2020-09-25 08:57:24,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:24,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:57:24,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930354338] [2020-09-25 08:57:24,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:57:24,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:24,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:57:24,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:57:24,914 INFO L87 Difference]: Start difference. First operand 1496 states and 1886 transitions. Second operand 6 states. [2020-09-25 08:57:25,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:25,209 INFO L93 Difference]: Finished difference Result 2964 states and 3803 transitions. [2020-09-25 08:57:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:57:25,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-09-25 08:57:25,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:25,217 INFO L225 Difference]: With dead ends: 2964 [2020-09-25 08:57:25,217 INFO L226 Difference]: Without dead ends: 1607 [2020-09-25 08:57:25,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:57:25,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2020-09-25 08:57:25,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1601. [2020-09-25 08:57:25,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1601 states. [2020-09-25 08:57:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2048 transitions. [2020-09-25 08:57:25,271 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2048 transitions. Word has length 203 [2020-09-25 08:57:25,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:25,271 INFO L479 AbstractCegarLoop]: Abstraction has 1601 states and 2048 transitions. [2020-09-25 08:57:25,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:57:25,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2048 transitions. [2020-09-25 08:57:25,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 08:57:25,276 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:25,276 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:25,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:57:25,277 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:25,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:25,277 INFO L82 PathProgramCache]: Analyzing trace with hash 438775901, now seen corresponding path program 1 times [2020-09-25 08:57:25,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:25,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366027925] [2020-09-25 08:57:25,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:25,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:25,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:25,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:26,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:26,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 08:57:26,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:26,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1269 [2020-09-25 08:57:26,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:26,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:26,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:57:26,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 08:57:26,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 08:57:26,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:26,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:26,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:26,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:26,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:26,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:26,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:26,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:26,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:26,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 08:57:26,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366027925] [2020-09-25 08:57:26,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:26,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:57:26,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443172610] [2020-09-25 08:57:26,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:57:26,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:26,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:57:26,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:57:26,767 INFO L87 Difference]: Start difference. First operand 1601 states and 2048 transitions. Second operand 6 states. [2020-09-25 08:57:27,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:27,057 INFO L93 Difference]: Finished difference Result 3156 states and 4079 transitions. [2020-09-25 08:57:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:57:27,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2020-09-25 08:57:27,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:27,067 INFO L225 Difference]: With dead ends: 3156 [2020-09-25 08:57:27,067 INFO L226 Difference]: Without dead ends: 1694 [2020-09-25 08:57:27,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:57:27,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2020-09-25 08:57:27,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1667. [2020-09-25 08:57:27,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1667 states. [2020-09-25 08:57:27,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2141 transitions. [2020-09-25 08:57:27,160 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2141 transitions. Word has length 208 [2020-09-25 08:57:27,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:27,161 INFO L479 AbstractCegarLoop]: Abstraction has 1667 states and 2141 transitions. [2020-09-25 08:57:27,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:57:27,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2141 transitions. [2020-09-25 08:57:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 08:57:27,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:27,168 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:27,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 08:57:27,169 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:27,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:27,169 INFO L82 PathProgramCache]: Analyzing trace with hash -747548647, now seen corresponding path program 1 times [2020-09-25 08:57:27,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:27,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518052211] [2020-09-25 08:57:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:27,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:27,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:27,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:27,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:27,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 08:57:27,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:27,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-09-25 08:57:27,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:27,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 08:57:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:57:27,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:27,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:27,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:27,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:27,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:27,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:27,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:27,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:27,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:27,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 08:57:27,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518052211] [2020-09-25 08:57:27,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:27,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:27,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115422968] [2020-09-25 08:57:27,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:27,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:27,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:27,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:27,904 INFO L87 Difference]: Start difference. First operand 1667 states and 2141 transitions. Second operand 3 states. [2020-09-25 08:57:28,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:28,011 INFO L93 Difference]: Finished difference Result 4620 states and 6008 transitions. [2020-09-25 08:57:28,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:28,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2020-09-25 08:57:28,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:28,027 INFO L225 Difference]: With dead ends: 4620 [2020-09-25 08:57:28,027 INFO L226 Difference]: Without dead ends: 3092 [2020-09-25 08:57:28,031 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 08:57:28,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2020-09-25 08:57:28,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3090. [2020-09-25 08:57:28,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3090 states. [2020-09-25 08:57:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3090 states to 3090 states and 4003 transitions. [2020-09-25 08:57:28,145 INFO L78 Accepts]: Start accepts. Automaton has 3090 states and 4003 transitions. Word has length 208 [2020-09-25 08:57:28,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:28,146 INFO L479 AbstractCegarLoop]: Abstraction has 3090 states and 4003 transitions. [2020-09-25 08:57:28,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:28,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3090 states and 4003 transitions. [2020-09-25 08:57:28,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 08:57:28,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:28,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:28,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 08:57:28,152 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:28,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:28,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1289279705, now seen corresponding path program 1 times [2020-09-25 08:57:28,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:28,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675643825] [2020-09-25 08:57:28,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:28,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:29,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:32,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:32,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 08:57:32,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:57:32,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4293 [2020-09-25 08:57:32,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:32,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:32,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 08:57:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 08:57:32,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:32,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:32,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:32,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:32,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:32,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:32,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:32,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:32,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:32,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675643825] [2020-09-25 08:57:32,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:32,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:32,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003374157] [2020-09-25 08:57:32,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:32,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:32,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:32,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:32,548 INFO L87 Difference]: Start difference. First operand 3090 states and 4003 transitions. Second operand 4 states. [2020-09-25 08:57:33,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:33,010 INFO L93 Difference]: Finished difference Result 9142 states and 11909 transitions. [2020-09-25 08:57:33,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:33,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2020-09-25 08:57:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:33,039 INFO L225 Difference]: With dead ends: 9142 [2020-09-25 08:57:33,040 INFO L226 Difference]: Without dead ends: 6191 [2020-09-25 08:57:33,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:33,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2020-09-25 08:57:33,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 3108. [2020-09-25 08:57:33,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3108 states. [2020-09-25 08:57:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 3985 transitions. [2020-09-25 08:57:33,183 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 3985 transitions. Word has length 209 [2020-09-25 08:57:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:33,184 INFO L479 AbstractCegarLoop]: Abstraction has 3108 states and 3985 transitions. [2020-09-25 08:57:33,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:33,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 3985 transitions. [2020-09-25 08:57:33,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 08:57:33,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:33,191 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:33,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 08:57:33,191 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:33,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:33,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1767645779, now seen corresponding path program 1 times [2020-09-25 08:57:33,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:33,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555949864] [2020-09-25 08:57:33,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:33,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:33,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:34,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:34,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 08:57:34,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:34,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1170 [2020-09-25 08:57:34,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:34,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:57:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 08:57:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 08:57:34,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:34,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:34,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:34,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:34,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:34,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:34,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:34,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:34,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:34,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:34,548 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 08:57:34,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555949864] [2020-09-25 08:57:34,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:34,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:57:34,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384207645] [2020-09-25 08:57:34,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:57:34,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:34,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:57:34,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:57:34,551 INFO L87 Difference]: Start difference. First operand 3108 states and 3985 transitions. Second operand 6 states. [2020-09-25 08:57:34,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:34,839 INFO L93 Difference]: Finished difference Result 6289 states and 8117 transitions. [2020-09-25 08:57:34,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:57:34,839 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2020-09-25 08:57:34,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:34,854 INFO L225 Difference]: With dead ends: 6289 [2020-09-25 08:57:34,854 INFO L226 Difference]: Without dead ends: 3320 [2020-09-25 08:57:34,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:57:34,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2020-09-25 08:57:34,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 3258. [2020-09-25 08:57:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3258 states. [2020-09-25 08:57:34,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3258 states to 3258 states and 4165 transitions. [2020-09-25 08:57:34,968 INFO L78 Accepts]: Start accepts. Automaton has 3258 states and 4165 transitions. Word has length 209 [2020-09-25 08:57:34,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:34,969 INFO L479 AbstractCegarLoop]: Abstraction has 3258 states and 4165 transitions. [2020-09-25 08:57:34,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:57:34,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3258 states and 4165 transitions. [2020-09-25 08:57:34,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 08:57:34,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:34,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:34,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 08:57:34,975 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:34,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:34,976 INFO L82 PathProgramCache]: Analyzing trace with hash -478339839, now seen corresponding path program 1 times [2020-09-25 08:57:34,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:34,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395634770] [2020-09-25 08:57:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:35,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:35,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:35,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:35,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:35,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-25 08:57:35,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:57:35,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-09-25 08:57:35,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:35,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-09-25 08:57:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 08:57:35,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:35,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:35,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:35,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:35,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:35,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:35,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:35,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:35,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:35,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:35,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:35,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395634770] [2020-09-25 08:57:35,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:35,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:35,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304009985] [2020-09-25 08:57:35,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:35,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:35,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:35,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:35,612 INFO L87 Difference]: Start difference. First operand 3258 states and 4165 transitions. Second operand 4 states. [2020-09-25 08:57:36,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:36,080 INFO L93 Difference]: Finished difference Result 9922 states and 12887 transitions. [2020-09-25 08:57:36,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:36,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2020-09-25 08:57:36,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:36,127 INFO L225 Difference]: With dead ends: 9922 [2020-09-25 08:57:36,127 INFO L226 Difference]: Without dead ends: 6803 [2020-09-25 08:57:36,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:36,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6803 states. [2020-09-25 08:57:36,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6803 to 3354. [2020-09-25 08:57:36,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3354 states. [2020-09-25 08:57:36,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4291 transitions. [2020-09-25 08:57:36,290 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4291 transitions. Word has length 212 [2020-09-25 08:57:36,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:36,291 INFO L479 AbstractCegarLoop]: Abstraction has 3354 states and 4291 transitions. [2020-09-25 08:57:36,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:36,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4291 transitions. [2020-09-25 08:57:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 08:57:36,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:36,343 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:36,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 08:57:36,343 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:36,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:36,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1074238856, now seen corresponding path program 1 times [2020-09-25 08:57:36,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:36,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699884136] [2020-09-25 08:57:36,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:36,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:36,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:36,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:36,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 08:57:36,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:57:36,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 08:57:36,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:36,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:36,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-09-25 08:57:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 08:57:36,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:36,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:36,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:36,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:36,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:36,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:36,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:36,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:36,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:36,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:36,652 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 08:57:36,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699884136] [2020-09-25 08:57:36,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:36,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:36,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168349682] [2020-09-25 08:57:36,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:36,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:36,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:36,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:36,654 INFO L87 Difference]: Start difference. First operand 3354 states and 4291 transitions. Second operand 3 states. [2020-09-25 08:57:36,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:36,898 INFO L93 Difference]: Finished difference Result 6571 states and 8518 transitions. [2020-09-25 08:57:36,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:36,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2020-09-25 08:57:36,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:36,909 INFO L225 Difference]: With dead ends: 6571 [2020-09-25 08:57:36,909 INFO L226 Difference]: Without dead ends: 4402 [2020-09-25 08:57:36,914 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 08:57:36,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2020-09-25 08:57:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 4400. [2020-09-25 08:57:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4400 states. [2020-09-25 08:57:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 5627 transitions. [2020-09-25 08:57:37,036 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 5627 transitions. Word has length 230 [2020-09-25 08:57:37,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:37,037 INFO L479 AbstractCegarLoop]: Abstraction has 4400 states and 5627 transitions. [2020-09-25 08:57:37,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:37,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 5627 transitions. [2020-09-25 08:57:37,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 08:57:37,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:37,045 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] [2020-09-25 08:57:37,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 08:57:37,046 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:37,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:37,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2127332774, now seen corresponding path program 1 times [2020-09-25 08:57:37,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:37,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569738533] [2020-09-25 08:57:37,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:37,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:37,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:37,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:37,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 08:57:37,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:37,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-09-25 08:57:37,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:37,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:37,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:37,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-09-25 08:57:37,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 08:57:37,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:37,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:37,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:37,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:37,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:37,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:37,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:37,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:37,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:37,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:37,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:37,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:37,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 08:57:37,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569738533] [2020-09-25 08:57:37,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:37,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:37,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101437063] [2020-09-25 08:57:37,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:37,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:37,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:37,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:37,815 INFO L87 Difference]: Start difference. First operand 4400 states and 5627 transitions. Second operand 4 states. [2020-09-25 08:57:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:38,500 INFO L93 Difference]: Finished difference Result 14938 states and 19563 transitions. [2020-09-25 08:57:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:38,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2020-09-25 08:57:38,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:38,527 INFO L225 Difference]: With dead ends: 14938 [2020-09-25 08:57:38,527 INFO L226 Difference]: Without dead ends: 10437 [2020-09-25 08:57:38,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:38,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10437 states. [2020-09-25 08:57:38,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10437 to 5264. [2020-09-25 08:57:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5264 states. [2020-09-25 08:57:38,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 6587 transitions. [2020-09-25 08:57:38,711 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 6587 transitions. Word has length 239 [2020-09-25 08:57:38,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:38,711 INFO L479 AbstractCegarLoop]: Abstraction has 5264 states and 6587 transitions. [2020-09-25 08:57:38,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 6587 transitions. [2020-09-25 08:57:38,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 08:57:38,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:38,720 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] [2020-09-25 08:57:38,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 08:57:38,720 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:38,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:38,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1471492422, now seen corresponding path program 1 times [2020-09-25 08:57:38,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:38,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898983363] [2020-09-25 08:57:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:38,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:38,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:39,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:39,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:39,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 08:57:39,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:57:39,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-09-25 08:57:39,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:39,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:39,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:39,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-09-25 08:57:39,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 08:57:39,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:39,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:39,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:39,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:39,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:39,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:39,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:39,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:39,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:39,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:39,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:39,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:39,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 08:57:39,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898983363] [2020-09-25 08:57:39,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:39,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:39,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120510069] [2020-09-25 08:57:39,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:39,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:39,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:39,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:39,516 INFO L87 Difference]: Start difference. First operand 5264 states and 6587 transitions. Second operand 4 states. [2020-09-25 08:57:40,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:40,064 INFO L93 Difference]: Finished difference Result 16278 states and 20647 transitions. [2020-09-25 08:57:40,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:40,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2020-09-25 08:57:40,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:40,088 INFO L225 Difference]: With dead ends: 16278 [2020-09-25 08:57:40,088 INFO L226 Difference]: Without dead ends: 10913 [2020-09-25 08:57:40,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:40,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10913 states. [2020-09-25 08:57:40,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10913 to 5528. [2020-09-25 08:57:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5528 states. [2020-09-25 08:57:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 6883 transitions. [2020-09-25 08:57:40,329 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 6883 transitions. Word has length 239 [2020-09-25 08:57:40,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:40,330 INFO L479 AbstractCegarLoop]: Abstraction has 5528 states and 6883 transitions. [2020-09-25 08:57:40,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:40,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 6883 transitions. [2020-09-25 08:57:40,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-25 08:57:40,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:40,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:40,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 08:57:40,337 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:40,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash 949363548, now seen corresponding path program 1 times [2020-09-25 08:57:40,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:40,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2960517] [2020-09-25 08:57:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:40,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:41,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:41,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-25 08:57:41,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:57:41,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-09-25 08:57:41,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:41,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:41,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:57:41,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-09-25 08:57:41,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 08:57:41,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:41,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:41,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:41,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:41,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:41,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:41,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:41,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:41,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:41,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 08:57:41,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2960517] [2020-09-25 08:57:41,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:41,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:41,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873180304] [2020-09-25 08:57:41,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:41,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:41,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:41,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:41,957 INFO L87 Difference]: Start difference. First operand 5528 states and 6883 transitions. Second operand 4 states. [2020-09-25 08:57:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:42,295 INFO L93 Difference]: Finished difference Result 11337 states and 14098 transitions. [2020-09-25 08:57:42,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:42,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 256 [2020-09-25 08:57:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:42,308 INFO L225 Difference]: With dead ends: 11337 [2020-09-25 08:57:42,309 INFO L226 Difference]: Without dead ends: 5948 [2020-09-25 08:57:42,318 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 08:57:42,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5948 states. [2020-09-25 08:57:42,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5948 to 4512. [2020-09-25 08:57:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4512 states. [2020-09-25 08:57:42,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 5681 transitions. [2020-09-25 08:57:42,496 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 5681 transitions. Word has length 256 [2020-09-25 08:57:42,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:42,497 INFO L479 AbstractCegarLoop]: Abstraction has 4512 states and 5681 transitions. [2020-09-25 08:57:42,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:42,498 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 5681 transitions. [2020-09-25 08:57:42,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-25 08:57:42,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:42,599 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:42,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 08:57:42,599 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:42,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:42,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1830826787, now seen corresponding path program 1 times [2020-09-25 08:57:42,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:42,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46156306] [2020-09-25 08:57:42,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:42,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:42,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:42,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:43,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:43,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 08:57:43,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:43,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-09-25 08:57:43,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:43,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-09-25 08:57:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 08:57:43,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:43,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:43,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:43,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:43,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:43,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:43,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:43,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:43,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:43,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:43,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:43,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:43,206 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 08:57:43,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46156306] [2020-09-25 08:57:43,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:43,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:43,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451754338] [2020-09-25 08:57:43,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:43,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:43,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:43,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:43,208 INFO L87 Difference]: Start difference. First operand 4512 states and 5681 transitions. Second operand 3 states. [2020-09-25 08:57:43,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:43,461 INFO L93 Difference]: Finished difference Result 8887 states and 11264 transitions. [2020-09-25 08:57:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:43,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2020-09-25 08:57:43,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:43,473 INFO L225 Difference]: With dead ends: 8887 [2020-09-25 08:57:43,473 INFO L226 Difference]: Without dead ends: 5596 [2020-09-25 08:57:43,479 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 08:57:43,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2020-09-25 08:57:43,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 5594. [2020-09-25 08:57:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5594 states. [2020-09-25 08:57:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 7049 transitions. [2020-09-25 08:57:43,689 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 7049 transitions. Word has length 264 [2020-09-25 08:57:43,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:43,690 INFO L479 AbstractCegarLoop]: Abstraction has 5594 states and 7049 transitions. [2020-09-25 08:57:43,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:43,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 7049 transitions. [2020-09-25 08:57:43,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-25 08:57:43,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:43,700 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:43,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 08:57:43,701 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:43,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:43,702 INFO L82 PathProgramCache]: Analyzing trace with hash 358927714, now seen corresponding path program 1 times [2020-09-25 08:57:43,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:43,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020558647] [2020-09-25 08:57:43,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:43,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:44,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:44,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:45,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:45,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-09-25 08:57:45,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:57:45,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1639 [2020-09-25 08:57:45,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:45,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-09-25 08:57:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 08:57:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:45,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:45,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:45,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:45,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:45,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:45,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:45,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:45,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 08:57:45,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020558647] [2020-09-25 08:57:45,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:45,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:45,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774719302] [2020-09-25 08:57:45,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:45,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:45,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:45,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:45,545 INFO L87 Difference]: Start difference. First operand 5594 states and 7049 transitions. Second operand 4 states. [2020-09-25 08:57:46,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:46,117 INFO L93 Difference]: Finished difference Result 17998 states and 23063 transitions. [2020-09-25 08:57:46,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:46,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2020-09-25 08:57:46,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:46,142 INFO L225 Difference]: With dead ends: 17998 [2020-09-25 08:57:46,142 INFO L226 Difference]: Without dead ends: 12543 [2020-09-25 08:57:46,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:46,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12543 states. [2020-09-25 08:57:46,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12543 to 5944. [2020-09-25 08:57:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5944 states. [2020-09-25 08:57:46,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 7449 transitions. [2020-09-25 08:57:46,379 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 7449 transitions. Word has length 269 [2020-09-25 08:57:46,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:46,380 INFO L479 AbstractCegarLoop]: Abstraction has 5944 states and 7449 transitions. [2020-09-25 08:57:46,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:46,380 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 7449 transitions. [2020-09-25 08:57:46,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-09-25 08:57:46,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:46,389 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:46,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 08:57:46,389 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:46,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:46,389 INFO L82 PathProgramCache]: Analyzing trace with hash -202412804, now seen corresponding path program 1 times [2020-09-25 08:57:46,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:46,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850740538] [2020-09-25 08:57:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:46,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:46,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:46,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:47,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:47,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-09-25 08:57:47,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:47,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 818 [2020-09-25 08:57:47,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:47,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:57:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-09-25 08:57:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:57:47,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:47,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:47,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:47,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:47,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:47,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:47,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:47,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:47,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:47,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:47,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:47,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:47,409 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 08:57:47,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850740538] [2020-09-25 08:57:47,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:47,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:47,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311267339] [2020-09-25 08:57:47,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:47,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:47,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:47,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:47,412 INFO L87 Difference]: Start difference. First operand 5944 states and 7449 transitions. Second operand 4 states.