/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_7.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:44:57,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:44:57,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:44:57,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:44:57,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:44:57,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:44:57,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:44:57,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:44:57,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:44:57,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:44:57,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:44:57,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:44:57,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:44:57,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:44:57,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:44:57,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:44:57,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:44:57,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:44:57,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:44:57,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:44:57,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:44:57,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:44:57,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:44:57,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:44:57,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:44:57,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:44:57,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:44:57,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:44:57,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:44:57,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:44:57,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:44:57,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:44:57,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:44:57,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:44:57,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:44:57,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:44:57,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:44:57,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:44:57,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:44:57,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:44:57,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:44:57,297 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 [2020-10-15 04:44:57,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:44:57,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:44:57,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:44:57,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:44:57,322 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:44:57,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:44:57,322 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:44:57,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:44:57,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:44:57,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:44:57,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:44:57,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:44:57,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:44:57,323 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:44:57,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:44:57,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:44:57,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:44:57,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:44:57,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:44:57,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:44:57,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:44:57,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:44:57,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:44:57,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:44:57,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:44:57,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:44:57,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:44:57,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:44:57,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:44:57,327 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:44:57,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:44:57,686 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:44:57,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:44:57,696 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:44:57,697 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:44:57,697 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_7.cil.c [2020-10-15 04:44:57,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93fbe986b/3ce93a4c21aa493facfa7d211f0d7aaf/FLAGe6d23ce89 [2020-10-15 04:44:58,235 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:44:58,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_7.cil.c [2020-10-15 04:44:58,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93fbe986b/3ce93a4c21aa493facfa7d211f0d7aaf/FLAGe6d23ce89 [2020-10-15 04:44:58,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93fbe986b/3ce93a4c21aa493facfa7d211f0d7aaf [2020-10-15 04:44:58,633 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:44:58,634 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:44:58,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:44:58,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:44:58,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:44:58,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:44:58" (1/1) ... [2020-10-15 04:44:58,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3788f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:58, skipping insertion in model container [2020-10-15 04:44:58,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:44:58" (1/1) ... [2020-10-15 04:44:58,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:44:58,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:44:58,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:44:59,004 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:44:59,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:44:59,217 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:44:59,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:59 WrapperNode [2020-10-15 04:44:59,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:44:59,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:44:59,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:44:59,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:44:59,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:59" (1/1) ... [2020-10-15 04:44:59,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:59" (1/1) ... [2020-10-15 04:44:59,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:59" (1/1) ... [2020-10-15 04:44:59,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:59" (1/1) ... [2020-10-15 04:44:59,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:59" (1/1) ... [2020-10-15 04:44:59,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:59" (1/1) ... [2020-10-15 04:44:59,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:59" (1/1) ... [2020-10-15 04:44:59,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:44:59,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:44:59,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:44:59,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:44:59,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:59" (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 [2020-10-15 04:44:59,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:44:59,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:44:59,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-15 04:44:59,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:44:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:44:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:44:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:44:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 04:44:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-15 04:44:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:44:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:44:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:44:59,581 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 04:45:00,106 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-10-15 04:45:00,107 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-10-15 04:45:00,119 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:45:00,119 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 04:45:00,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:45:00 BoogieIcfgContainer [2020-10-15 04:45:00,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:45:00,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:45:00,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:45:00,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:45:00,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:44:58" (1/3) ... [2020-10-15 04:45:00,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b04157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:45:00, skipping insertion in model container [2020-10-15 04:45:00,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:44:59" (2/3) ... [2020-10-15 04:45:00,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b04157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:45:00, skipping insertion in model container [2020-10-15 04:45:00,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:45:00" (3/3) ... [2020-10-15 04:45:00,135 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_7.cil.c [2020-10-15 04:45:00,147 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:45:00,156 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:45:00,172 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:45:00,200 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:45:00,201 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:45:00,201 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:45:00,201 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:45:00,201 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:45:00,201 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:45:00,202 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:45:00,202 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:45:00,226 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-10-15 04:45:00,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-15 04:45:00,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:00,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:00,238 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:00,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:00,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1198514108, now seen corresponding path program 1 times [2020-10-15 04:45:00,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:00,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231822126] [2020-10-15 04:45:00,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:00,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:00,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:00,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:00,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:00,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 04:45:00,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:45:00,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-15 04:45:00,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:00,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:00,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:00,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 04:45:00,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 04:45:00,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:45:01,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:01,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:01,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:01,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:01,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:01,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:45:01,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:01,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:01,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:01,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:01,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:45:01,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231822126] [2020-10-15 04:45:01,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:01,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:01,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427331861] [2020-10-15 04:45:01,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:01,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:01,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:01,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:01,083 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 3 states. [2020-10-15 04:45:01,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:01,247 INFO L93 Difference]: Finished difference Result 429 states and 732 transitions. [2020-10-15 04:45:01,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:01,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-10-15 04:45:01,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:01,266 INFO L225 Difference]: With dead ends: 429 [2020-10-15 04:45:01,267 INFO L226 Difference]: Without dead ends: 261 [2020-10-15 04:45:01,272 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 [2020-10-15 04:45:01,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-15 04:45:01,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2020-10-15 04:45:01,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-15 04:45:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 395 transitions. [2020-10-15 04:45:01,345 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 395 transitions. Word has length 38 [2020-10-15 04:45:01,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:01,346 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 395 transitions. [2020-10-15 04:45:01,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:01,347 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 395 transitions. [2020-10-15 04:45:01,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 04:45:01,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:01,353 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] [2020-10-15 04:45:01,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:45:01,354 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:01,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:01,354 INFO L82 PathProgramCache]: Analyzing trace with hash 412718141, now seen corresponding path program 1 times [2020-10-15 04:45:01,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:01,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827172182] [2020-10-15 04:45:01,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:01,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:01,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:01,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:01,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:01,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 04:45:01,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:45:01,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-15 04:45:01,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:01,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:01,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 04:45:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:45:01,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:45:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:01,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:01,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:01,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:01,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:01,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:01,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:01,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:01,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:45:01,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827172182] [2020-10-15 04:45:01,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:01,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:01,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210711079] [2020-10-15 04:45:01,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:01,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:01,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:01,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:01,857 INFO L87 Difference]: Start difference. First operand 261 states and 395 transitions. Second operand 3 states. [2020-10-15 04:45:01,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:01,973 INFO L93 Difference]: Finished difference Result 509 states and 782 transitions. [2020-10-15 04:45:01,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:01,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-10-15 04:45:01,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:01,978 INFO L225 Difference]: With dead ends: 509 [2020-10-15 04:45:01,978 INFO L226 Difference]: Without dead ends: 384 [2020-10-15 04:45:01,980 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 [2020-10-15 04:45:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-10-15 04:45:02,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2020-10-15 04:45:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-10-15 04:45:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 580 transitions. [2020-10-15 04:45:02,012 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 580 transitions. Word has length 54 [2020-10-15 04:45:02,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:02,013 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 580 transitions. [2020-10-15 04:45:02,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 580 transitions. [2020-10-15 04:45:02,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 04:45:02,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:02,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:02,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:45:02,019 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:02,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:02,020 INFO L82 PathProgramCache]: Analyzing trace with hash 516084045, now seen corresponding path program 1 times [2020-10-15 04:45:02,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:02,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308814284] [2020-10-15 04:45:02,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:02,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:02,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:02,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:02,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 04:45:02,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:45:02,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-15 04:45:02,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:02,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 04:45:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 04:45:02,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:02,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:02,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:02,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:02,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:02,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:02,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:02,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:02,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:02,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:45:02,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308814284] [2020-10-15 04:45:02,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:02,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:02,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146236977] [2020-10-15 04:45:02,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:02,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:02,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:02,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:02,295 INFO L87 Difference]: Start difference. First operand 384 states and 580 transitions. Second operand 3 states. [2020-10-15 04:45:02,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:02,376 INFO L93 Difference]: Finished difference Result 755 states and 1152 transitions. [2020-10-15 04:45:02,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:02,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-10-15 04:45:02,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:02,381 INFO L225 Difference]: With dead ends: 755 [2020-10-15 04:45:02,381 INFO L226 Difference]: Without dead ends: 507 [2020-10-15 04:45:02,383 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 [2020-10-15 04:45:02,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-10-15 04:45:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2020-10-15 04:45:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-10-15 04:45:02,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 767 transitions. [2020-10-15 04:45:02,409 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 767 transitions. Word has length 75 [2020-10-15 04:45:02,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:02,410 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 767 transitions. [2020-10-15 04:45:02,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:02,410 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 767 transitions. [2020-10-15 04:45:02,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-15 04:45:02,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:02,416 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-15 04:45:02,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:45:02,417 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:02,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:02,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1319359339, now seen corresponding path program 1 times [2020-10-15 04:45:02,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:02,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014645968] [2020-10-15 04:45:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:02,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:02,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:02,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:02,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:02,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:02,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 04:45:02,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:45:02,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-15 04:45:02,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:02,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:02,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-15 04:45:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 04:45:02,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-15 04:45:02,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:02,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:02,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:02,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:02,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:02,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:02,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:02,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:02,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:02,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:02,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:02,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-15 04:45:02,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014645968] [2020-10-15 04:45:02,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:02,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:02,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598846913] [2020-10-15 04:45:02,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:02,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:02,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:02,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:02,883 INFO L87 Difference]: Start difference. First operand 507 states and 767 transitions. Second operand 3 states. [2020-10-15 04:45:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:02,951 INFO L93 Difference]: Finished difference Result 1003 states and 1527 transitions. [2020-10-15 04:45:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:02,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-10-15 04:45:02,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:02,956 INFO L225 Difference]: With dead ends: 1003 [2020-10-15 04:45:02,956 INFO L226 Difference]: Without dead ends: 632 [2020-10-15 04:45:02,958 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 [2020-10-15 04:45:02,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2020-10-15 04:45:02,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 630. [2020-10-15 04:45:02,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-10-15 04:45:02,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 958 transitions. [2020-10-15 04:45:02,980 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 958 transitions. Word has length 98 [2020-10-15 04:45:02,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:02,981 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 958 transitions. [2020-10-15 04:45:02,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:02,981 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 958 transitions. [2020-10-15 04:45:02,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 04:45:02,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:02,986 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-15 04:45:02,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:45:02,986 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:02,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:02,986 INFO L82 PathProgramCache]: Analyzing trace with hash 863998103, now seen corresponding path program 1 times [2020-10-15 04:45:02,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:02,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993812162] [2020-10-15 04:45:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:03,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:03,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 04:45:03,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:45:03,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-15 04:45:03,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:03,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-15 04:45:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:45:03,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:03,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:03,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:03,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:03,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:03,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:03,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:03,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:03,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:45:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-15 04:45:03,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993812162] [2020-10-15 04:45:03,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:03,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:03,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345041931] [2020-10-15 04:45:03,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:03,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:03,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:03,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:03,470 INFO L87 Difference]: Start difference. First operand 630 states and 958 transitions. Second operand 3 states. [2020-10-15 04:45:03,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:03,724 INFO L93 Difference]: Finished difference Result 1592 states and 2491 transitions. [2020-10-15 04:45:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:03,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-10-15 04:45:03,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:03,731 INFO L225 Difference]: With dead ends: 1592 [2020-10-15 04:45:03,731 INFO L226 Difference]: Without dead ends: 915 [2020-10-15 04:45:03,733 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 [2020-10-15 04:45:03,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2020-10-15 04:45:03,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 840. [2020-10-15 04:45:03,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 840 states. [2020-10-15 04:45:03,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1268 transitions. [2020-10-15 04:45:03,763 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1268 transitions. Word has length 105 [2020-10-15 04:45:03,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:03,763 INFO L479 AbstractCegarLoop]: Abstraction has 840 states and 1268 transitions. [2020-10-15 04:45:03,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:03,764 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1268 transitions. [2020-10-15 04:45:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 04:45:03,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:03,767 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-15 04:45:03,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:45:03,767 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:03,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:03,768 INFO L82 PathProgramCache]: Analyzing trace with hash -776835892, now seen corresponding path program 1 times [2020-10-15 04:45:03,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:03,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970368250] [2020-10-15 04:45:03,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:03,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:03,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:03,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 04:45:03,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:45:03,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-15 04:45:03,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:03,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-15 04:45:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:45:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:04,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:04,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:04,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:04,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:04,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:04,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:04,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:04,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:04,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:04,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:04,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:04,064 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-15 04:45:04,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970368250] [2020-10-15 04:45:04,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:04,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:04,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117263884] [2020-10-15 04:45:04,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:04,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:04,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:04,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:04,067 INFO L87 Difference]: Start difference. First operand 840 states and 1268 transitions. Second operand 3 states. [2020-10-15 04:45:04,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:04,150 INFO L93 Difference]: Finished difference Result 1667 states and 2526 transitions. [2020-10-15 04:45:04,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:04,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-10-15 04:45:04,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:04,157 INFO L225 Difference]: With dead ends: 1667 [2020-10-15 04:45:04,158 INFO L226 Difference]: Without dead ends: 1005 [2020-10-15 04:45:04,160 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 [2020-10-15 04:45:04,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2020-10-15 04:45:04,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 1005. [2020-10-15 04:45:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-10-15 04:45:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1518 transitions. [2020-10-15 04:45:04,193 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1518 transitions. Word has length 122 [2020-10-15 04:45:04,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:04,194 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1518 transitions. [2020-10-15 04:45:04,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:04,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1518 transitions. [2020-10-15 04:45:04,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 04:45:04,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:04,198 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:04,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:45:04,199 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:04,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:04,199 INFO L82 PathProgramCache]: Analyzing trace with hash 968591760, now seen corresponding path program 1 times [2020-10-15 04:45:04,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:04,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788710908] [2020-10-15 04:45:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:04,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-15 04:45:04,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:45:04,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-15 04:45:04,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:04,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-15 04:45:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 04:45:04,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:04,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:04,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:04,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:04,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:04,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:04,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:04,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:04,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:04,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:04,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:04,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-15 04:45:04,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788710908] [2020-10-15 04:45:04,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:04,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:04,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305037656] [2020-10-15 04:45:04,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:04,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:04,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:04,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:04,598 INFO L87 Difference]: Start difference. First operand 1005 states and 1518 transitions. Second operand 3 states. [2020-10-15 04:45:04,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:04,708 INFO L93 Difference]: Finished difference Result 1174 states and 1775 transitions. [2020-10-15 04:45:04,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:04,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-10-15 04:45:04,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:04,719 INFO L225 Difference]: With dead ends: 1174 [2020-10-15 04:45:04,719 INFO L226 Difference]: Without dead ends: 1172 [2020-10-15 04:45:04,721 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 [2020-10-15 04:45:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2020-10-15 04:45:04,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1170. [2020-10-15 04:45:04,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2020-10-15 04:45:04,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1772 transitions. [2020-10-15 04:45:04,776 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1772 transitions. Word has length 125 [2020-10-15 04:45:04,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:04,777 INFO L479 AbstractCegarLoop]: Abstraction has 1170 states and 1772 transitions. [2020-10-15 04:45:04,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:04,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1772 transitions. [2020-10-15 04:45:04,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 04:45:04,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:04,783 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2020-10-15 04:45:04,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:45:04,783 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:04,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:04,784 INFO L82 PathProgramCache]: Analyzing trace with hash 85046005, now seen corresponding path program 1 times [2020-10-15 04:45:04,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:04,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117952632] [2020-10-15 04:45:04,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:04,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:04,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:05,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 04:45:05,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:45:05,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 726 [2020-10-15 04:45:05,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:05,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:05,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:05,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-15 04:45:05,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 04:45:05,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:05,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:05,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:05,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:05,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:05,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:05,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:05,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:05,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:05,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:05,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:05,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-15 04:45:05,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117952632] [2020-10-15 04:45:05,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:05,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:05,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663422842] [2020-10-15 04:45:05,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:05,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:05,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:05,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:05,652 INFO L87 Difference]: Start difference. First operand 1170 states and 1772 transitions. Second operand 3 states. [2020-10-15 04:45:05,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:05,744 INFO L93 Difference]: Finished difference Result 2329 states and 3535 transitions. [2020-10-15 04:45:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:05,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2020-10-15 04:45:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:05,753 INFO L225 Difference]: With dead ends: 2329 [2020-10-15 04:45:05,754 INFO L226 Difference]: Without dead ends: 1337 [2020-10-15 04:45:05,757 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 [2020-10-15 04:45:05,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2020-10-15 04:45:05,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1335. [2020-10-15 04:45:05,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-10-15 04:45:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 2004 transitions. [2020-10-15 04:45:05,813 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 2004 transitions. Word has length 126 [2020-10-15 04:45:05,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:05,814 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 2004 transitions. [2020-10-15 04:45:05,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:05,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 2004 transitions. [2020-10-15 04:45:05,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-15 04:45:05,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:05,820 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:05,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:45:05,820 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:05,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:05,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1829818110, now seen corresponding path program 1 times [2020-10-15 04:45:05,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:05,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509078911] [2020-10-15 04:45:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:05,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:05,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:06,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:06,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:06,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-15 04:45:06,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:45:06,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-15 04:45:06,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:06,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-15 04:45:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:45:06,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:06,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:06,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:06,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:06,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:06,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:06,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:06,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:06,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:06,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-15 04:45:06,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509078911] [2020-10-15 04:45:06,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:06,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:06,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391115589] [2020-10-15 04:45:06,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:06,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:06,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:06,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:06,524 INFO L87 Difference]: Start difference. First operand 1335 states and 2004 transitions. Second operand 3 states. [2020-10-15 04:45:06,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:06,818 INFO L93 Difference]: Finished difference Result 3083 states and 4761 transitions. [2020-10-15 04:45:06,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:06,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-10-15 04:45:06,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:06,831 INFO L225 Difference]: With dead ends: 3083 [2020-10-15 04:45:06,832 INFO L226 Difference]: Without dead ends: 1665 [2020-10-15 04:45:06,836 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 [2020-10-15 04:45:06,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2020-10-15 04:45:06,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1551. [2020-10-15 04:45:06,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1551 states. [2020-10-15 04:45:06,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 2380 transitions. [2020-10-15 04:45:06,891 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 2380 transitions. Word has length 167 [2020-10-15 04:45:06,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:06,891 INFO L479 AbstractCegarLoop]: Abstraction has 1551 states and 2380 transitions. [2020-10-15 04:45:06,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:06,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 2380 transitions. [2020-10-15 04:45:06,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 04:45:06,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:06,897 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-15 04:45:06,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:45:06,898 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:06,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:06,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1316724659, now seen corresponding path program 1 times [2020-10-15 04:45:06,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:06,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561943856] [2020-10-15 04:45:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:07,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 04:45:07,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:45:07,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-15 04:45:07,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:07,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:07,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:07,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-15 04:45:07,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 04:45:07,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:07,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:07,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:07,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:07,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:07,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:07,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:07,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:07,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:07,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:07,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-15 04:45:07,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561943856] [2020-10-15 04:45:07,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:07,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:07,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522351000] [2020-10-15 04:45:07,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:07,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:07,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:07,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:07,396 INFO L87 Difference]: Start difference. First operand 1551 states and 2380 transitions. Second operand 3 states. [2020-10-15 04:45:07,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:07,515 INFO L93 Difference]: Finished difference Result 2129 states and 3270 transitions. [2020-10-15 04:45:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:07,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2020-10-15 04:45:07,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:07,527 INFO L225 Difference]: With dead ends: 2129 [2020-10-15 04:45:07,527 INFO L226 Difference]: Without dead ends: 1743 [2020-10-15 04:45:07,530 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 [2020-10-15 04:45:07,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-10-15 04:45:07,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1743. [2020-10-15 04:45:07,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1743 states. [2020-10-15 04:45:07,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2678 transitions. [2020-10-15 04:45:07,614 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2678 transitions. Word has length 185 [2020-10-15 04:45:07,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:07,615 INFO L479 AbstractCegarLoop]: Abstraction has 1743 states and 2678 transitions. [2020-10-15 04:45:07,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:07,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2678 transitions. [2020-10-15 04:45:07,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-15 04:45:07,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:07,624 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 3, 3, 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] [2020-10-15 04:45:07,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:45:07,624 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:07,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:07,625 INFO L82 PathProgramCache]: Analyzing trace with hash -123593654, now seen corresponding path program 1 times [2020-10-15 04:45:07,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:07,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525656200] [2020-10-15 04:45:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:07,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:07,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:08,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-15 04:45:08,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:45:08,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-15 04:45:08,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:08,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:08,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:08,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-15 04:45:08,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 04:45:08,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:08,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:08,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:08,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:08,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:08,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:08,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:08,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:08,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:08,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:08,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:08,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-10-15 04:45:08,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525656200] [2020-10-15 04:45:08,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:08,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:08,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414978886] [2020-10-15 04:45:08,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:08,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:08,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:08,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:08,217 INFO L87 Difference]: Start difference. First operand 1743 states and 2678 transitions. Second operand 3 states. [2020-10-15 04:45:08,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:08,503 INFO L93 Difference]: Finished difference Result 3869 states and 6077 transitions. [2020-10-15 04:45:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:08,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2020-10-15 04:45:08,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:08,515 INFO L225 Difference]: With dead ends: 3869 [2020-10-15 04:45:08,516 INFO L226 Difference]: Without dead ends: 2139 [2020-10-15 04:45:08,520 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 [2020-10-15 04:45:08,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2020-10-15 04:45:08,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2112. [2020-10-15 04:45:08,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2112 states. [2020-10-15 04:45:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3119 transitions. [2020-10-15 04:45:08,587 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3119 transitions. Word has length 188 [2020-10-15 04:45:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:08,588 INFO L479 AbstractCegarLoop]: Abstraction has 2112 states and 3119 transitions. [2020-10-15 04:45:08,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3119 transitions. [2020-10-15 04:45:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-15 04:45:08,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:08,595 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:45:08,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:45:08,596 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:08,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:08,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1745832665, now seen corresponding path program 1 times [2020-10-15 04:45:08,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:08,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036329680] [2020-10-15 04:45:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:08,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:08,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:09,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:09,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:09,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:11,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:11,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-15 04:45:11,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:45:11,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3072 [2020-10-15 04:45:11,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:11,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:11,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:11,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-10-15 04:45:11,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 04:45:11,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:11,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:11,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:11,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:11,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:11,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:11,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:11,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:11,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:11,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:11,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:11,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:11,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2020-10-15 04:45:11,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036329680] [2020-10-15 04:45:11,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:11,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:11,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604722941] [2020-10-15 04:45:11,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:11,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:11,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:11,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:11,786 INFO L87 Difference]: Start difference. First operand 2112 states and 3119 transitions. Second operand 3 states. [2020-10-15 04:45:12,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:12,060 INFO L93 Difference]: Finished difference Result 4607 states and 6959 transitions. [2020-10-15 04:45:12,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:12,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2020-10-15 04:45:12,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:12,076 INFO L225 Difference]: With dead ends: 4607 [2020-10-15 04:45:12,076 INFO L226 Difference]: Without dead ends: 2508 [2020-10-15 04:45:12,086 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 [2020-10-15 04:45:12,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2020-10-15 04:45:12,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2463. [2020-10-15 04:45:12,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2463 states. [2020-10-15 04:45:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 3542 transitions. [2020-10-15 04:45:12,171 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 3542 transitions. Word has length 222 [2020-10-15 04:45:12,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:12,172 INFO L479 AbstractCegarLoop]: Abstraction has 2463 states and 3542 transitions. [2020-10-15 04:45:12,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:12,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 3542 transitions. [2020-10-15 04:45:12,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-15 04:45:12,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:12,181 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 5, 5, 4, 4, 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] [2020-10-15 04:45:12,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:45:12,181 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:12,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:12,182 INFO L82 PathProgramCache]: Analyzing trace with hash -711446573, now seen corresponding path program 1 times [2020-10-15 04:45:12,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:12,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490118418] [2020-10-15 04:45:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:12,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:12,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:12,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:12,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:12,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:12,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:12,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:12,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:13,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:13,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:17,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:17,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-15 04:45:17,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:45:17,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 04:45:17,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:17,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:17,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:45:17,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-15 04:45:17,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-15 04:45:17,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:17,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:17,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:17,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:17,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:17,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:17,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:17,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:17,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:17,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:17,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:17,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:17,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 04:45:17,616 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-15 04:45:17,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490118418] [2020-10-15 04:45:17,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:45:17,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 04:45:17,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85529873] [2020-10-15 04:45:17,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:45:17,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:17,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:45:17,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:17,619 INFO L87 Difference]: Start difference. First operand 2463 states and 3542 transitions. Second operand 5 states. [2020-10-15 04:45:17,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:17,933 INFO L93 Difference]: Finished difference Result 11257 states and 16085 transitions. [2020-10-15 04:45:17,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:17,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-10-15 04:45:17,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:17,987 INFO L225 Difference]: With dead ends: 11257 [2020-10-15 04:45:17,987 INFO L226 Difference]: Without dead ends: 8807 [2020-10-15 04:45:18,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:45:18,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8807 states. [2020-10-15 04:45:18,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8807 to 4569. [2020-10-15 04:45:18,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4569 states. [2020-10-15 04:45:18,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4569 states to 4569 states and 6540 transitions. [2020-10-15 04:45:18,241 INFO L78 Accepts]: Start accepts. Automaton has 4569 states and 6540 transitions. Word has length 227 [2020-10-15 04:45:18,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:18,242 INFO L479 AbstractCegarLoop]: Abstraction has 4569 states and 6540 transitions. [2020-10-15 04:45:18,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:45:18,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4569 states and 6540 transitions. [2020-10-15 04:45:18,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-15 04:45:18,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:18,253 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 5, 5, 4, 4, 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] [2020-10-15 04:45:18,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:45:18,254 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:18,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:18,254 INFO L82 PathProgramCache]: Analyzing trace with hash -2034628548, now seen corresponding path program 1 times [2020-10-15 04:45:18,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:18,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12463391] [2020-10-15 04:45:18,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:18,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:18,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:18,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:18,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:18,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:18,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:18,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:20,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:20,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-15 04:45:20,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:45:20,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2310 [2020-10-15 04:45:20,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:20,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:45:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 04:45:20,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:20,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:20,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:20,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:20,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:20,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:20,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:20,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:20,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:20,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-10-15 04:45:20,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12463391] [2020-10-15 04:45:20,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:20,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:20,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085007402] [2020-10-15 04:45:20,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:20,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:20,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:20,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:20,703 INFO L87 Difference]: Start difference. First operand 4569 states and 6540 transitions. Second operand 3 states. [2020-10-15 04:45:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:20,973 INFO L93 Difference]: Finished difference Result 13613 states and 19518 transitions. [2020-10-15 04:45:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:20,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2020-10-15 04:45:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:21,026 INFO L225 Difference]: With dead ends: 13613 [2020-10-15 04:45:21,026 INFO L226 Difference]: Without dead ends: 9057 [2020-10-15 04:45:21,039 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 [2020-10-15 04:45:21,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2020-10-15 04:45:21,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 9055. [2020-10-15 04:45:21,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9055 states. [2020-10-15 04:45:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9055 states to 9055 states and 12943 transitions. [2020-10-15 04:45:21,465 INFO L78 Accepts]: Start accepts. Automaton has 9055 states and 12943 transitions. Word has length 228 [2020-10-15 04:45:21,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:21,466 INFO L479 AbstractCegarLoop]: Abstraction has 9055 states and 12943 transitions. [2020-10-15 04:45:21,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:21,466 INFO L276 IsEmpty]: Start isEmpty. Operand 9055 states and 12943 transitions. [2020-10-15 04:45:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-15 04:45:21,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:21,490 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 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] [2020-10-15 04:45:21,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:45:21,490 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:21,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:21,491 INFO L82 PathProgramCache]: Analyzing trace with hash 95008295, now seen corresponding path program 1 times [2020-10-15 04:45:21,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:21,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030366794] [2020-10-15 04:45:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:21,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:21,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:21,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:21,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:21,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:22,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:22,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:23,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:23,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-15 04:45:23,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:45:23,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1500 [2020-10-15 04:45:23,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:23,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-15 04:45:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 04:45:23,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:23,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:23,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:23,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:23,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:23,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:23,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:23,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-15 04:45:23,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030366794] [2020-10-15 04:45:23,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:23,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:23,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806336027] [2020-10-15 04:45:23,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:23,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:23,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:23,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:23,210 INFO L87 Difference]: Start difference. First operand 9055 states and 12943 transitions. Second operand 3 states. [2020-10-15 04:45:23,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:23,739 INFO L93 Difference]: Finished difference Result 26867 states and 38383 transitions. [2020-10-15 04:45:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:23,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2020-10-15 04:45:23,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:23,782 INFO L225 Difference]: With dead ends: 26867 [2020-10-15 04:45:23,783 INFO L226 Difference]: Without dead ends: 15249 [2020-10-15 04:45:23,809 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 [2020-10-15 04:45:23,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15249 states. [2020-10-15 04:45:24,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15249 to 15247. [2020-10-15 04:45:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15247 states. [2020-10-15 04:45:24,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15247 states to 15247 states and 21753 transitions. [2020-10-15 04:45:24,673 INFO L78 Accepts]: Start accepts. Automaton has 15247 states and 21753 transitions. Word has length 230 [2020-10-15 04:45:24,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:24,674 INFO L479 AbstractCegarLoop]: Abstraction has 15247 states and 21753 transitions. [2020-10-15 04:45:24,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:24,674 INFO L276 IsEmpty]: Start isEmpty. Operand 15247 states and 21753 transitions. [2020-10-15 04:45:24,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-15 04:45:24,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:24,722 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 3, 3, 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] [2020-10-15 04:45:24,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:45:24,723 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:24,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:24,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1358318774, now seen corresponding path program 1 times [2020-10-15 04:45:24,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:24,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006795681] [2020-10-15 04:45:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:24,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:24,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:24,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:25,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:25,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:25,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:25,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:25,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:26,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:26,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-15 04:45:26,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:45:26,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2013 [2020-10-15 04:45:26,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:26,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:26,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-15 04:45:26,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-15 04:45:26,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:26,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:26,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:26,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:26,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:26,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:26,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:26,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:26,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:26,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:26,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:26,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:26,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-15 04:45:26,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006795681] [2020-10-15 04:45:26,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:26,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:26,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012848013] [2020-10-15 04:45:26,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:26,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:26,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:26,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:26,897 INFO L87 Difference]: Start difference. First operand 15247 states and 21753 transitions. Second operand 3 states. [2020-10-15 04:45:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:27,831 INFO L93 Difference]: Finished difference Result 45681 states and 65157 transitions. [2020-10-15 04:45:27,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:27,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2020-10-15 04:45:27,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:27,910 INFO L225 Difference]: With dead ends: 45681 [2020-10-15 04:45:27,910 INFO L226 Difference]: Without dead ends: 30447 [2020-10-15 04:45:27,941 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 [2020-10-15 04:45:27,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30447 states. [2020-10-15 04:45:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30447 to 24253. [2020-10-15 04:45:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24253 states. [2020-10-15 04:45:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24253 states to 24253 states and 34566 transitions. [2020-10-15 04:45:28,894 INFO L78 Accepts]: Start accepts. Automaton has 24253 states and 34566 transitions. Word has length 232 [2020-10-15 04:45:28,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:28,895 INFO L479 AbstractCegarLoop]: Abstraction has 24253 states and 34566 transitions. [2020-10-15 04:45:28,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 24253 states and 34566 transitions. [2020-10-15 04:45:28,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-15 04:45:28,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:28,944 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 3, 3, 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] [2020-10-15 04:45:28,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:45:28,944 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:28,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:28,944 INFO L82 PathProgramCache]: Analyzing trace with hash -2115720280, now seen corresponding path program 1 times [2020-10-15 04:45:28,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:28,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400012543] [2020-10-15 04:45:28,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:29,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:29,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:29,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:29,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:29,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:29,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:29,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:30,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:30,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:30,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-15 04:45:30,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:45:30,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1836 [2020-10-15 04:45:30,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:30,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-15 04:45:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-15 04:45:30,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:30,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:30,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:30,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:30,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:30,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:30,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:30,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:30,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:30,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:30,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-15 04:45:30,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400012543] [2020-10-15 04:45:30,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:30,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:30,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54662032] [2020-10-15 04:45:31,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:31,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:31,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:31,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:31,002 INFO L87 Difference]: Start difference. First operand 24253 states and 34566 transitions. Second operand 3 states. [2020-10-15 04:45:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:31,891 INFO L93 Difference]: Finished difference Result 57331 states and 81721 transitions. [2020-10-15 04:45:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:31,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-10-15 04:45:31,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:31,984 INFO L225 Difference]: With dead ends: 57331 [2020-10-15 04:45:31,985 INFO L226 Difference]: Without dead ends: 39501 [2020-10-15 04:45:32,034 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 [2020-10-15 04:45:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39501 states. [2020-10-15 04:45:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39501 to 39499. [2020-10-15 04:45:33,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39499 states. [2020-10-15 04:45:33,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39499 states to 39499 states and 56275 transitions. [2020-10-15 04:45:33,353 INFO L78 Accepts]: Start accepts. Automaton has 39499 states and 56275 transitions. Word has length 233 [2020-10-15 04:45:33,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:33,354 INFO L479 AbstractCegarLoop]: Abstraction has 39499 states and 56275 transitions. [2020-10-15 04:45:33,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:33,354 INFO L276 IsEmpty]: Start isEmpty. Operand 39499 states and 56275 transitions. [2020-10-15 04:45:33,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-15 04:45:33,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:33,458 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 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] [2020-10-15 04:45:33,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:45:33,459 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:33,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:33,459 INFO L82 PathProgramCache]: Analyzing trace with hash 954014534, now seen corresponding path program 1 times [2020-10-15 04:45:33,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:33,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910993223] [2020-10-15 04:45:33,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:33,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:33,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:33,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:33,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:33,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:33,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:34,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:34,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:35,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:38,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:38,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-15 04:45:38,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:45:38,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4728 [2020-10-15 04:45:38,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:38,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:45:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-15 04:45:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-15 04:45:38,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:38,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:38,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:38,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:38,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:38,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:38,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:38,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:38,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:38,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:38,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 292 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-15 04:45:38,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910993223] [2020-10-15 04:45:38,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:45:38,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 04:45:38,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629558757] [2020-10-15 04:45:38,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:45:38,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:38,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:45:38,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:38,569 INFO L87 Difference]: Start difference. First operand 39499 states and 56275 transitions. Second operand 5 states. [2020-10-15 04:45:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:40,574 INFO L93 Difference]: Finished difference Result 130735 states and 186238 transitions. [2020-10-15 04:45:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:45:40,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-10-15 04:45:40,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:40,804 INFO L225 Difference]: With dead ends: 130735 [2020-10-15 04:45:40,804 INFO L226 Difference]: Without dead ends: 91249 [2020-10-15 04:45:40,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:45:40,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91249 states. [2020-10-15 04:45:42,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91249 to 57477. [2020-10-15 04:45:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57477 states. [2020-10-15 04:45:44,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57477 states to 57477 states and 81755 transitions. [2020-10-15 04:45:44,232 INFO L78 Accepts]: Start accepts. Automaton has 57477 states and 81755 transitions. Word has length 234 [2020-10-15 04:45:44,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:44,233 INFO L479 AbstractCegarLoop]: Abstraction has 57477 states and 81755 transitions. [2020-10-15 04:45:44,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:45:44,233 INFO L276 IsEmpty]: Start isEmpty. Operand 57477 states and 81755 transitions. [2020-10-15 04:45:44,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-15 04:45:44,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:44,305 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 3, 3, 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] [2020-10-15 04:45:44,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:45:44,305 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:44,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:44,306 INFO L82 PathProgramCache]: Analyzing trace with hash -496972458, now seen corresponding path program 1 times [2020-10-15 04:45:44,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:44,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099747560] [2020-10-15 04:45:44,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:44,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:44,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:44,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:44,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:44,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:44,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:44,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:45,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:46,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:46,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:48,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:48,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-15 04:45:48,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:45:48,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3957 [2020-10-15 04:45:48,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:48,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:48,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:45:48,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-15 04:45:48,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-15 04:45:48,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:48,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:48,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:48,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:48,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:48,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:48,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:48,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:48,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:48,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:48,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:48,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:48,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:48,508 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 239 proven. 1 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-10-15 04:45:48,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099747560] [2020-10-15 04:45:48,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:45:48,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 04:45:48,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76435383] [2020-10-15 04:45:48,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:45:48,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:48,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:45:48,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:48,512 INFO L87 Difference]: Start difference. First operand 57477 states and 81755 transitions. Second operand 5 states. [2020-10-15 04:45:50,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:50,263 INFO L93 Difference]: Finished difference Result 136821 states and 194903 transitions. [2020-10-15 04:45:50,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:45:50,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-10-15 04:45:50,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:50,512 INFO L225 Difference]: With dead ends: 136821 [2020-10-15 04:45:50,512 INFO L226 Difference]: Without dead ends: 111691 [2020-10-15 04:45:50,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:45:50,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111691 states. [2020-10-15 04:45:51,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111691 to 43257. [2020-10-15 04:45:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43257 states. [2020-10-15 04:45:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43257 states to 43257 states and 61634 transitions. [2020-10-15 04:45:51,874 INFO L78 Accepts]: Start accepts. Automaton has 43257 states and 61634 transitions. Word has length 235 [2020-10-15 04:45:51,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:51,875 INFO L479 AbstractCegarLoop]: Abstraction has 43257 states and 61634 transitions. [2020-10-15 04:45:51,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:45:51,875 INFO L276 IsEmpty]: Start isEmpty. Operand 43257 states and 61634 transitions. [2020-10-15 04:45:51,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-15 04:45:51,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:51,929 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 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] [2020-10-15 04:45:51,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 04:45:51,930 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:51,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:51,930 INFO L82 PathProgramCache]: Analyzing trace with hash -7496711, now seen corresponding path program 1 times [2020-10-15 04:45:51,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:51,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708056138] [2020-10-15 04:45:51,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:52,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:52,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:52,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:52,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:52,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:52,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:52,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:53,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-15 04:45:53,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:45:53,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1105 [2020-10-15 04:45:53,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:53,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-15 04:45:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:45:53,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:53,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:53,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:53,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:53,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:53,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:45:53,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:53,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:53,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-10-15 04:45:53,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708056138] [2020-10-15 04:45:53,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:53,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:45:53,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552058542] [2020-10-15 04:45:53,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:45:53,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:53,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:45:53,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:45:53,129 INFO L87 Difference]: Start difference. First operand 43257 states and 61634 transitions. Second operand 3 states. [2020-10-15 04:45:54,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:54,044 INFO L93 Difference]: Finished difference Result 94373 states and 137355 transitions. [2020-10-15 04:45:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:45:54,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2020-10-15 04:45:54,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:54,146 INFO L225 Difference]: With dead ends: 94373 [2020-10-15 04:45:54,146 INFO L226 Difference]: Without dead ends: 50473 [2020-10-15 04:45:54,203 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 [2020-10-15 04:45:54,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50473 states. [2020-10-15 04:45:55,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50473 to 48341. [2020-10-15 04:45:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48341 states. [2020-10-15 04:45:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48341 states to 48341 states and 66226 transitions. [2020-10-15 04:45:55,542 INFO L78 Accepts]: Start accepts. Automaton has 48341 states and 66226 transitions. Word has length 235 [2020-10-15 04:45:55,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:55,542 INFO L479 AbstractCegarLoop]: Abstraction has 48341 states and 66226 transitions. [2020-10-15 04:45:55,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:45:55,542 INFO L276 IsEmpty]: Start isEmpty. Operand 48341 states and 66226 transitions. [2020-10-15 04:45:55,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-15 04:45:55,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:55,592 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 4, 4, 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] [2020-10-15 04:45:55,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 04:45:55,592 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:55,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:55,593 INFO L82 PathProgramCache]: Analyzing trace with hash -164020823, now seen corresponding path program 1 times [2020-10-15 04:45:55,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:55,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751069324] [2020-10-15 04:45:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:55,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:55,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:55,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:55,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:55,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:55,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:55,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:57,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:57,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-15 04:45:57,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:45:57,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1419 [2020-10-15 04:45:57,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:57,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:57,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:45:57,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-15 04:45:57,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 04:45:57,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:57,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:57,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:57,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:57,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:45:57,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:57,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:45:57,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:57,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:57,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:57,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:57,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:57,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 476 proven. 26 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-10-15 04:45:57,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751069324] [2020-10-15 04:45:57,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:45:57,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 04:45:57,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453377293] [2020-10-15 04:45:57,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:45:57,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:57,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:45:57,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:45:57,120 INFO L87 Difference]: Start difference. First operand 48341 states and 66226 transitions. Second operand 4 states. [2020-10-15 04:45:58,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:58,948 INFO L93 Difference]: Finished difference Result 146309 states and 200448 transitions. [2020-10-15 04:45:58,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:58,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 264 [2020-10-15 04:45:58,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:59,089 INFO L225 Difference]: With dead ends: 146309 [2020-10-15 04:45:59,090 INFO L226 Difference]: Without dead ends: 97981 [2020-10-15 04:45:59,146 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 [2020-10-15 04:45:59,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97981 states. [2020-10-15 04:46:02,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97981 to 89193. [2020-10-15 04:46:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89193 states. [2020-10-15 04:46:02,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89193 states to 89193 states and 120808 transitions. [2020-10-15 04:46:02,630 INFO L78 Accepts]: Start accepts. Automaton has 89193 states and 120808 transitions. Word has length 264 [2020-10-15 04:46:02,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:02,630 INFO L479 AbstractCegarLoop]: Abstraction has 89193 states and 120808 transitions. [2020-10-15 04:46:02,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:46:02,631 INFO L276 IsEmpty]: Start isEmpty. Operand 89193 states and 120808 transitions. [2020-10-15 04:46:02,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-15 04:46:02,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:02,695 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-15 04:46:02,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 04:46:02,695 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:02,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:02,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1458294517, now seen corresponding path program 1 times [2020-10-15 04:46:02,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:02,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330077746] [2020-10-15 04:46:02,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:02,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:02,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:02,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:02,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:02,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:03,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:03,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:03,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-15 04:46:03,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:46:03,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-10-15 04:46:03,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:03,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-15 04:46:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:46:03,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:03,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:03,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:03,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:03,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:03,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:03,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:46:03,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:03,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:03,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:03,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:03,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:03,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 299 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-15 04:46:03,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330077746] [2020-10-15 04:46:03,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:03,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:46:03,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331817429] [2020-10-15 04:46:03,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:46:03,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:03,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:46:03,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:03,329 INFO L87 Difference]: Start difference. First operand 89193 states and 120808 transitions. Second operand 3 states. [2020-10-15 04:46:05,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:05,276 INFO L93 Difference]: Finished difference Result 190837 states and 261771 transitions. [2020-10-15 04:46:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:46:05,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 267 [2020-10-15 04:46:05,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:05,447 INFO L225 Difference]: With dead ends: 190837 [2020-10-15 04:46:05,448 INFO L226 Difference]: Without dead ends: 99689 [2020-10-15 04:46:05,528 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 [2020-10-15 04:46:05,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99689 states. [2020-10-15 04:46:07,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99689 to 97373. [2020-10-15 04:46:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97373 states. [2020-10-15 04:46:10,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97373 states to 97373 states and 132924 transitions. [2020-10-15 04:46:10,258 INFO L78 Accepts]: Start accepts. Automaton has 97373 states and 132924 transitions. Word has length 267 [2020-10-15 04:46:10,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:10,258 INFO L479 AbstractCegarLoop]: Abstraction has 97373 states and 132924 transitions. [2020-10-15 04:46:10,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:46:10,258 INFO L276 IsEmpty]: Start isEmpty. Operand 97373 states and 132924 transitions. [2020-10-15 04:46:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-15 04:46:10,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:10,320 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-15 04:46:10,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 04:46:10,321 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:10,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:10,321 INFO L82 PathProgramCache]: Analyzing trace with hash 269170927, now seen corresponding path program 1 times [2020-10-15 04:46:10,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:10,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418692089] [2020-10-15 04:46:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:10,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:10,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:10,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:11,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:11,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-15 04:46:11,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:46:11,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-10-15 04:46:11,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:11,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-15 04:46:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:46:11,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:11,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:11,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:11,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:11,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:11,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:11,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:46:11,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:11,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:11,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:11,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:11,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:11,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 299 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-15 04:46:11,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418692089] [2020-10-15 04:46:11,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:11,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:46:11,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013203693] [2020-10-15 04:46:11,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:46:11,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:11,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:46:11,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:11,317 INFO L87 Difference]: Start difference. First operand 97373 states and 132924 transitions. Second operand 3 states. [2020-10-15 04:46:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:13,028 INFO L93 Difference]: Finished difference Result 207197 states and 286003 transitions. [2020-10-15 04:46:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:46:13,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 268 [2020-10-15 04:46:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:13,175 INFO L225 Difference]: With dead ends: 207197 [2020-10-15 04:46:13,176 INFO L226 Difference]: Without dead ends: 107869 [2020-10-15 04:46:13,263 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 [2020-10-15 04:46:13,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107869 states. [2020-10-15 04:46:15,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107869 to 103933. [2020-10-15 04:46:15,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103933 states. [2020-10-15 04:46:15,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103933 states to 103933 states and 143092 transitions. [2020-10-15 04:46:15,480 INFO L78 Accepts]: Start accepts. Automaton has 103933 states and 143092 transitions. Word has length 268 [2020-10-15 04:46:15,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:15,481 INFO L479 AbstractCegarLoop]: Abstraction has 103933 states and 143092 transitions. [2020-10-15 04:46:15,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:46:15,481 INFO L276 IsEmpty]: Start isEmpty. Operand 103933 states and 143092 transitions. [2020-10-15 04:46:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-15 04:46:15,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:15,558 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-15 04:46:15,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 04:46:15,558 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:15,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:15,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1273470911, now seen corresponding path program 1 times [2020-10-15 04:46:15,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:15,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122854573] [2020-10-15 04:46:15,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:15,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:15,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:15,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:15,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:15,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:15,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:15,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:16,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:16,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:19,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:19,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-15 04:46:19,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:46:19,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3920 [2020-10-15 04:46:19,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:19,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-15 04:46:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 04:46:19,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:19,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:19,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:19,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:19,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:19,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:46:19,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:19,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:19,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 361 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2020-10-15 04:46:19,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122854573] [2020-10-15 04:46:19,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:19,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:46:19,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896554452] [2020-10-15 04:46:19,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:46:19,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:19,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:46:19,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:19,547 INFO L87 Difference]: Start difference. First operand 103933 states and 143092 transitions. Second operand 3 states. [2020-10-15 04:46:22,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:22,710 INFO L93 Difference]: Finished difference Result 216689 states and 298939 transitions. [2020-10-15 04:46:22,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:46:22,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 270 [2020-10-15 04:46:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:22,841 INFO L225 Difference]: With dead ends: 216689 [2020-10-15 04:46:22,842 INFO L226 Difference]: Without dead ends: 109509 [2020-10-15 04:46:22,913 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 [2020-10-15 04:46:22,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109509 states. [2020-10-15 04:46:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109509 to 106393. [2020-10-15 04:46:25,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106393 states. [2020-10-15 04:46:25,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106393 states to 106393 states and 143092 transitions. [2020-10-15 04:46:25,256 INFO L78 Accepts]: Start accepts. Automaton has 106393 states and 143092 transitions. Word has length 270 [2020-10-15 04:46:25,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:25,256 INFO L479 AbstractCegarLoop]: Abstraction has 106393 states and 143092 transitions. [2020-10-15 04:46:25,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:46:25,257 INFO L276 IsEmpty]: Start isEmpty. Operand 106393 states and 143092 transitions. [2020-10-15 04:46:25,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-15 04:46:25,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:25,333 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-15 04:46:25,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 04:46:25,333 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:25,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:25,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1712128076, now seen corresponding path program 1 times [2020-10-15 04:46:25,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:25,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775545339] [2020-10-15 04:46:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:25,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:25,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:25,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:25,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:25,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:25,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:25,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:26,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:26,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-15 04:46:26,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:46:26,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1188 [2020-10-15 04:46:26,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:26,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:46:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-15 04:46:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 04:46:26,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:26,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:26,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:26,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:26,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:26,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:26,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:46:26,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:26,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:26,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:26,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:26,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:26,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 552 proven. 26 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-15 04:46:26,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775545339] [2020-10-15 04:46:26,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:46:26,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 04:46:26,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37124798] [2020-10-15 04:46:26,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:46:26,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:26,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:46:26,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:46:26,659 INFO L87 Difference]: Start difference. First operand 106393 states and 143092 transitions. Second operand 4 states. [2020-10-15 04:46:31,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:31,208 INFO L93 Difference]: Finished difference Result 283045 states and 383568 transitions. [2020-10-15 04:46:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:46:31,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 286 [2020-10-15 04:46:31,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:31,437 INFO L225 Difference]: With dead ends: 283045 [2020-10-15 04:46:31,437 INFO L226 Difference]: Without dead ends: 176665 [2020-10-15 04:46:31,529 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 [2020-10-15 04:46:31,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176665 states. [2020-10-15 04:46:34,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176665 to 163353. [2020-10-15 04:46:34,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163353 states. [2020-10-15 04:46:34,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163353 states to 163353 states and 215454 transitions. [2020-10-15 04:46:34,912 INFO L78 Accepts]: Start accepts. Automaton has 163353 states and 215454 transitions. Word has length 286 [2020-10-15 04:46:34,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:34,913 INFO L479 AbstractCegarLoop]: Abstraction has 163353 states and 215454 transitions. [2020-10-15 04:46:34,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:46:34,913 INFO L276 IsEmpty]: Start isEmpty. Operand 163353 states and 215454 transitions. [2020-10-15 04:46:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-15 04:46:35,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:35,038 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-15 04:46:35,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 04:46:35,038 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:35,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:35,039 INFO L82 PathProgramCache]: Analyzing trace with hash 926130186, now seen corresponding path program 1 times [2020-10-15 04:46:35,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:35,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305235902] [2020-10-15 04:46:35,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:35,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:35,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:35,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:35,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:35,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:36,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:37,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-15 04:46:37,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:46:37,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2075 [2020-10-15 04:46:37,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:37,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:37,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:37,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 04:46:37,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 04:46:37,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:37,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:37,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:37,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:37,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:46:37,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:37,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:37,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:37,195 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-15 04:46:37,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305235902] [2020-10-15 04:46:37,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:37,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:46:37,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810294294] [2020-10-15 04:46:37,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:46:37,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:37,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:46:37,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:46:37,197 INFO L87 Difference]: Start difference. First operand 163353 states and 215454 transitions. Second operand 3 states. [2020-10-15 04:46:42,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:42,249 INFO L93 Difference]: Finished difference Result 237040 states and 312936 transitions. [2020-10-15 04:46:42,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:46:42,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 286 [2020-10-15 04:46:42,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:42,424 INFO L225 Difference]: With dead ends: 237040 [2020-10-15 04:46:42,424 INFO L226 Difference]: Without dead ends: 155369 [2020-10-15 04:46:42,472 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 [2020-10-15 04:46:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155369 states. [2020-10-15 04:46:45,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155369 to 155367. [2020-10-15 04:46:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155367 states. [2020-10-15 04:46:45,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155367 states to 155367 states and 204929 transitions. [2020-10-15 04:46:45,676 INFO L78 Accepts]: Start accepts. Automaton has 155367 states and 204929 transitions. Word has length 286 [2020-10-15 04:46:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:45,677 INFO L479 AbstractCegarLoop]: Abstraction has 155367 states and 204929 transitions. [2020-10-15 04:46:45,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:46:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand 155367 states and 204929 transitions. [2020-10-15 04:46:45,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-15 04:46:45,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:45,800 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 5, 5, 3, 3, 3, 3, 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] [2020-10-15 04:46:45,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 04:46:45,801 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:45,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:45,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1107761759, now seen corresponding path program 1 times [2020-10-15 04:46:45,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:45,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817217163] [2020-10-15 04:46:45,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:45,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:45,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:45,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:45,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:45,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:45,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:46,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:46,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:48,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:48,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-15 04:46:48,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:46:48,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2721 [2020-10-15 04:46:48,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:48,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:46:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-10-15 04:46:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 04:46:48,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:48,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:48,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:48,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:48,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:46:48,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:48,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:46:48,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:48,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:48,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 610 proven. 26 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-15 04:46:48,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817217163] [2020-10-15 04:46:48,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:46:48,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 04:46:48,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756909693] [2020-10-15 04:46:48,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:46:48,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:48,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:46:48,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:46:48,611 INFO L87 Difference]: Start difference. First operand 155367 states and 204929 transitions. Second operand 4 states. [2020-10-15 04:46:52,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:52,156 INFO L93 Difference]: Finished difference Result 343005 states and 451632 transitions. [2020-10-15 04:46:52,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:46:52,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 289 [2020-10-15 04:46:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:52,397 INFO L225 Difference]: With dead ends: 343005 [2020-10-15 04:46:52,397 INFO L226 Difference]: Without dead ends: 187651 [2020-10-15 04:46:52,488 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 [2020-10-15 04:46:52,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187651 states. [2020-10-15 04:46:59,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187651 to 179741. [2020-10-15 04:46:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179741 states. [2020-10-15 04:46:59,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179741 states to 179741 states and 236289 transitions. [2020-10-15 04:46:59,943 INFO L78 Accepts]: Start accepts. Automaton has 179741 states and 236289 transitions. Word has length 289 [2020-10-15 04:46:59,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:59,943 INFO L479 AbstractCegarLoop]: Abstraction has 179741 states and 236289 transitions. [2020-10-15 04:46:59,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:46:59,943 INFO L276 IsEmpty]: Start isEmpty. Operand 179741 states and 236289 transitions. [2020-10-15 04:47:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-15 04:47:00,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:00,107 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2020-10-15 04:47:00,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 04:47:00,107 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:00,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:00,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1588759982, now seen corresponding path program 1 times [2020-10-15 04:47:00,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:00,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625123394] [2020-10-15 04:47:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:00,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:00,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:00,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-15 04:47:00,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:00,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-15 04:47:00,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:00,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:00,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:00,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-15 04:47:00,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:47:00,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:00,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:00,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:00,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:00,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:00,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:00,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:00,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:00,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:00,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:00,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:00,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:00,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:00,284 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-15 04:47:00,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625123394] [2020-10-15 04:47:00,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:00,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:00,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428955081] [2020-10-15 04:47:00,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:00,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:00,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:00,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:00,286 INFO L87 Difference]: Start difference. First operand 179741 states and 236289 transitions. Second operand 3 states. [2020-10-15 04:47:04,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:04,150 INFO L93 Difference]: Finished difference Result 359986 states and 473078 transitions. [2020-10-15 04:47:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:04,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 312 [2020-10-15 04:47:04,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:04,344 INFO L225 Difference]: With dead ends: 359986 [2020-10-15 04:47:04,344 INFO L226 Difference]: Without dead ends: 180258 [2020-10-15 04:47:04,428 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 [2020-10-15 04:47:04,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180258 states. [2020-10-15 04:47:11,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180258 to 179741. [2020-10-15 04:47:11,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179741 states. [2020-10-15 04:47:12,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179741 states to 179741 states and 233973 transitions. [2020-10-15 04:47:12,062 INFO L78 Accepts]: Start accepts. Automaton has 179741 states and 233973 transitions. Word has length 312 [2020-10-15 04:47:12,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:12,062 INFO L479 AbstractCegarLoop]: Abstraction has 179741 states and 233973 transitions. [2020-10-15 04:47:12,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:12,063 INFO L276 IsEmpty]: Start isEmpty. Operand 179741 states and 233973 transitions. [2020-10-15 04:47:12,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-15 04:47:12,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:12,192 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 8, 8, 7, 7, 5, 5, 3, 3, 3, 3, 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] [2020-10-15 04:47:12,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 04:47:12,192 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:12,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:12,192 INFO L82 PathProgramCache]: Analyzing trace with hash 165317361, now seen corresponding path program 1 times [2020-10-15 04:47:12,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:12,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423529160] [2020-10-15 04:47:12,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:12,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:12,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:13,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:13,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-15 04:47:13,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:47:13,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1388 [2020-10-15 04:47:13,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:13,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:13,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:13,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-15 04:47:13,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:47:13,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:13,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:13,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:13,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:13,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:13,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:13,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:13,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:13,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:13,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:47:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 594 proven. 0 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2020-10-15 04:47:13,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423529160] [2020-10-15 04:47:13,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:13,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:13,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002134426] [2020-10-15 04:47:13,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:13,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:13,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:13,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:13,671 INFO L87 Difference]: Start difference. First operand 179741 states and 233973 transitions. Second operand 3 states. [2020-10-15 04:47:17,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:17,310 INFO L93 Difference]: Finished difference Result 378291 states and 496110 transitions. [2020-10-15 04:47:17,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:17,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 312 [2020-10-15 04:47:17,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:17,560 INFO L225 Difference]: With dead ends: 378291 [2020-10-15 04:47:17,560 INFO L226 Difference]: Without dead ends: 195272 [2020-10-15 04:47:17,676 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 [2020-10-15 04:47:17,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195272 states. [2020-10-15 04:47:26,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195272 to 193919. [2020-10-15 04:47:26,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193919 states. [2020-10-15 04:47:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193919 states to 193919 states and 252738 transitions. [2020-10-15 04:47:26,750 INFO L78 Accepts]: Start accepts. Automaton has 193919 states and 252738 transitions. Word has length 312 [2020-10-15 04:47:26,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:26,750 INFO L479 AbstractCegarLoop]: Abstraction has 193919 states and 252738 transitions. [2020-10-15 04:47:26,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 193919 states and 252738 transitions. [2020-10-15 04:47:26,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-15 04:47:26,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:26,891 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2020-10-15 04:47:26,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 04:47:26,892 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:26,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:26,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1793866143, now seen corresponding path program 1 times [2020-10-15 04:47:26,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:26,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497037881] [2020-10-15 04:47:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:26,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:27,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:27,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-15 04:47:27,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:47:27,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-15 04:47:27,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:27,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:27,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:27,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-15 04:47:27,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 04:47:27,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:27,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:27,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:27,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:27,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:27,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:27,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:27,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:27,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:27,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:27,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 971 backedges. 563 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2020-10-15 04:47:27,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497037881] [2020-10-15 04:47:27,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:27,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:27,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514604119] [2020-10-15 04:47:27,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:27,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:27,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:27,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:27,182 INFO L87 Difference]: Start difference. First operand 193919 states and 252738 transitions. Second operand 3 states. [2020-10-15 04:47:31,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:31,455 INFO L93 Difference]: Finished difference Result 392372 states and 509787 transitions. [2020-10-15 04:47:31,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:31,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-10-15 04:47:31,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:31,747 INFO L225 Difference]: With dead ends: 392372 [2020-10-15 04:47:31,748 INFO L226 Difference]: Without dead ends: 213768 [2020-10-15 04:47:31,859 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 [2020-10-15 04:47:32,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213768 states. [2020-10-15 04:47:41,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213768 to 201423. [2020-10-15 04:47:41,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201423 states. [2020-10-15 04:47:41,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201423 states to 201423 states and 262922 transitions. [2020-10-15 04:47:41,330 INFO L78 Accepts]: Start accepts. Automaton has 201423 states and 262922 transitions. Word has length 327 [2020-10-15 04:47:41,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:41,330 INFO L479 AbstractCegarLoop]: Abstraction has 201423 states and 262922 transitions. [2020-10-15 04:47:41,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:41,330 INFO L276 IsEmpty]: Start isEmpty. Operand 201423 states and 262922 transitions. [2020-10-15 04:47:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-15 04:47:41,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:41,465 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 9, 9, 8, 8, 6, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:41,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 04:47:41,466 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:41,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:41,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1437226736, now seen corresponding path program 1 times [2020-10-15 04:47:41,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:41,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773097678] [2020-10-15 04:47:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:41,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:41,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:41,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:41,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:41,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:41,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:42,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:42,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-15 04:47:42,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:47:42,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-10-15 04:47:42,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:42,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:42,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:42,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-10-15 04:47:42,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 04:47:42,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:42,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:42,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:42,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:42,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:42,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:42,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:47:42,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:42,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:42,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 683 proven. 0 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2020-10-15 04:47:42,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773097678] [2020-10-15 04:47:42,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:47:42,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:47:42,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955090604] [2020-10-15 04:47:42,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:47:42,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:42,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:47:42,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:47:42,676 INFO L87 Difference]: Start difference. First operand 201423 states and 262922 transitions. Second operand 3 states. [2020-10-15 04:47:46,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:46,717 INFO L93 Difference]: Finished difference Result 401416 states and 523687 transitions. [2020-10-15 04:47:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:47:46,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 343 [2020-10-15 04:47:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:46,973 INFO L225 Difference]: With dead ends: 401416 [2020-10-15 04:47:46,973 INFO L226 Difference]: Without dead ends: 200006 [2020-10-15 04:47:47,099 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 [2020-10-15 04:47:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200006 states. [2020-10-15 04:47:52,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200006 to 199756. [2020-10-15 04:47:52,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199756 states. [2020-10-15 04:47:52,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199756 states to 199756 states and 255528 transitions. [2020-10-15 04:47:52,485 INFO L78 Accepts]: Start accepts. Automaton has 199756 states and 255528 transitions. Word has length 343 [2020-10-15 04:47:52,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:52,485 INFO L479 AbstractCegarLoop]: Abstraction has 199756 states and 255528 transitions. [2020-10-15 04:47:52,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:47:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 199756 states and 255528 transitions. [2020-10-15 04:47:52,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-15 04:47:52,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:52,625 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 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] [2020-10-15 04:47:52,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 04:47:52,626 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:52,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:52,626 INFO L82 PathProgramCache]: Analyzing trace with hash 393622040, now seen corresponding path program 1 times [2020-10-15 04:47:52,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:52,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753375377] [2020-10-15 04:47:52,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:52,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:52,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:52,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:52,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:53,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:53,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-15 04:47:53,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:47:53,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-10-15 04:47:53,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:53,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:47:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 286 [2020-10-15 04:47:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 04:47:53,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:53,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:53,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:53,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:53,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:47:53,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:53,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:53,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 423 proven. 26 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2020-10-15 04:47:53,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753375377] [2020-10-15 04:47:53,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:47:53,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 04:47:53,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445804400] [2020-10-15 04:47:53,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:47:53,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:53,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:47:53,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:47:53,448 INFO L87 Difference]: Start difference. First operand 199756 states and 255528 transitions. Second operand 4 states. [2020-10-15 04:47:56,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:56,267 INFO L93 Difference]: Finished difference Result 291727 states and 370499 transitions. [2020-10-15 04:47:56,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:47:56,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 344 [2020-10-15 04:47:56,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:56,289 INFO L225 Difference]: With dead ends: 291727 [2020-10-15 04:47:56,290 INFO L226 Difference]: Without dead ends: 19095 [2020-10-15 04:47:56,443 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 [2020-10-15 04:47:56,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19095 states. [2020-10-15 04:48:00,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19095 to 13300. [2020-10-15 04:48:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13300 states. [2020-10-15 04:48:00,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13300 states to 13300 states and 16414 transitions. [2020-10-15 04:48:00,523 INFO L78 Accepts]: Start accepts. Automaton has 13300 states and 16414 transitions. Word has length 344 [2020-10-15 04:48:00,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:00,524 INFO L479 AbstractCegarLoop]: Abstraction has 13300 states and 16414 transitions. [2020-10-15 04:48:00,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:48:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand 13300 states and 16414 transitions. [2020-10-15 04:48:00,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-15 04:48:00,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:00,539 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 10, 10, 10, 8, 8, 7, 7, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-15 04:48:00,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 04:48:00,539 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:00,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:00,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1757942096, now seen corresponding path program 1 times [2020-10-15 04:48:00,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:00,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703363212] [2020-10-15 04:48:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:00,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:00,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:00,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:00,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:00,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:01,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:01,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:01,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:02,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:04,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:05,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:05,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-15 04:48:05,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:48:05,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:48:05,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:05,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 329 [2020-10-15 04:48:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 04:48:05,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:05,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:05,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:05,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:05,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:48:05,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:05,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:48:05,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:05,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:05,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:05,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:05,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:05,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1609 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2020-10-15 04:48:05,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703363212] [2020-10-15 04:48:05,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:48:05,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:48:05,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094205765] [2020-10-15 04:48:05,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:48:05,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:05,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:48:05,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:48:05,659 INFO L87 Difference]: Start difference. First operand 13300 states and 16414 transitions. Second operand 3 states. [2020-10-15 04:48:05,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:05,920 INFO L93 Difference]: Finished difference Result 22793 states and 28186 transitions. [2020-10-15 04:48:05,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:48:05,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 378 [2020-10-15 04:48:05,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:05,928 INFO L225 Difference]: With dead ends: 22793 [2020-10-15 04:48:05,928 INFO L226 Difference]: Without dead ends: 7977 [2020-10-15 04:48:05,938 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 [2020-10-15 04:48:05,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7977 states. [2020-10-15 04:48:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7977 to 6966. [2020-10-15 04:48:06,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6966 states. [2020-10-15 04:48:06,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6966 states to 6966 states and 8513 transitions. [2020-10-15 04:48:06,064 INFO L78 Accepts]: Start accepts. Automaton has 6966 states and 8513 transitions. Word has length 378 [2020-10-15 04:48:06,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:06,065 INFO L479 AbstractCegarLoop]: Abstraction has 6966 states and 8513 transitions. [2020-10-15 04:48:06,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:48:06,065 INFO L276 IsEmpty]: Start isEmpty. Operand 6966 states and 8513 transitions. [2020-10-15 04:48:06,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-15 04:48:06,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:06,073 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 13, 13, 13, 11, 11, 10, 10, 8, 8, 6, 6, 6, 6, 5, 4, 4, 3, 3, 2, 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] [2020-10-15 04:48:06,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 04:48:06,073 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:06,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:06,073 INFO L82 PathProgramCache]: Analyzing trace with hash -2056133660, now seen corresponding path program 1 times [2020-10-15 04:48:06,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:06,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683045072] [2020-10-15 04:48:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:06,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:06,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:06,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:06,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:06,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:06,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:06,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-15 04:48:06,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:48:06,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-15 04:48:06,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:06,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:06,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:06,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 385 [2020-10-15 04:48:06,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 04:48:06,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:06,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:06,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:06,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:06,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:48:06,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:06,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:48:06,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:06,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:06,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:06,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:06,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2011 backedges. 524 proven. 0 refuted. 0 times theorem prover too weak. 1487 trivial. 0 not checked. [2020-10-15 04:48:06,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683045072] [2020-10-15 04:48:06,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:48:06,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:48:06,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383128577] [2020-10-15 04:48:06,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:48:06,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:06,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:48:06,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:48:06,854 INFO L87 Difference]: Start difference. First operand 6966 states and 8513 transitions. Second operand 3 states. [2020-10-15 04:48:07,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:07,069 INFO L93 Difference]: Finished difference Result 14369 states and 17578 transitions. [2020-10-15 04:48:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:48:07,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 435 [2020-10-15 04:48:07,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:07,076 INFO L225 Difference]: With dead ends: 14369 [2020-10-15 04:48:07,077 INFO L226 Difference]: Without dead ends: 7458 [2020-10-15 04:48:07,083 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 [2020-10-15 04:48:07,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7458 states. [2020-10-15 04:48:07,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7458 to 7380. [2020-10-15 04:48:07,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7380 states. [2020-10-15 04:48:07,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7380 states to 7380 states and 9017 transitions. [2020-10-15 04:48:07,285 INFO L78 Accepts]: Start accepts. Automaton has 7380 states and 9017 transitions. Word has length 435 [2020-10-15 04:48:07,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:07,285 INFO L479 AbstractCegarLoop]: Abstraction has 7380 states and 9017 transitions. [2020-10-15 04:48:07,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:48:07,285 INFO L276 IsEmpty]: Start isEmpty. Operand 7380 states and 9017 transitions. [2020-10-15 04:48:07,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-10-15 04:48:07,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:07,293 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 6, 6, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-10-15 04:48:07,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 04:48:07,293 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:07,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:07,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1976354622, now seen corresponding path program 1 times [2020-10-15 04:48:07,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:07,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565335489] [2020-10-15 04:48:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:07,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:07,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:07,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:07,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:07,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-15 04:48:07,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:48:07,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-15 04:48:07,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:07,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 340 [2020-10-15 04:48:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 04:48:07,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:07,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:07,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:07,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:07,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:48:07,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:07,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:48:07,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:07,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:07,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2275 backedges. 976 proven. 0 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2020-10-15 04:48:07,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565335489] [2020-10-15 04:48:07,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:48:07,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:48:07,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879590461] [2020-10-15 04:48:07,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:48:07,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:07,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:48:07,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:48:07,738 INFO L87 Difference]: Start difference. First operand 7380 states and 9017 transitions. Second operand 3 states. [2020-10-15 04:48:07,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:07,928 INFO L93 Difference]: Finished difference Result 14867 states and 18140 transitions. [2020-10-15 04:48:07,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:48:07,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 458 [2020-10-15 04:48:07,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:07,937 INFO L225 Difference]: With dead ends: 14867 [2020-10-15 04:48:07,938 INFO L226 Difference]: Without dead ends: 7362 [2020-10-15 04:48:07,945 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 [2020-10-15 04:48:07,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7362 states. [2020-10-15 04:48:08,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7362 to 7362. [2020-10-15 04:48:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7362 states. [2020-10-15 04:48:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7362 states to 7362 states and 8962 transitions. [2020-10-15 04:48:08,071 INFO L78 Accepts]: Start accepts. Automaton has 7362 states and 8962 transitions. Word has length 458 [2020-10-15 04:48:08,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:08,072 INFO L479 AbstractCegarLoop]: Abstraction has 7362 states and 8962 transitions. [2020-10-15 04:48:08,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:48:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7362 states and 8962 transitions. [2020-10-15 04:48:08,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-10-15 04:48:08,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:08,078 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 6, 6, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-10-15 04:48:08,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 04:48:08,078 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:08,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:08,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1820123734, now seen corresponding path program 1 times [2020-10-15 04:48:08,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:08,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427203052] [2020-10-15 04:48:08,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:08,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:08,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:08,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:08,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-15 04:48:08,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:48:08,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-15 04:48:08,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:08,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-15 04:48:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 04:48:08,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:08,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:08,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:08,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:08,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 04:48:08,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:08,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:48:08,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:08,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:08,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:08,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:08,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:08,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 1045 proven. 0 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2020-10-15 04:48:08,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427203052] [2020-10-15 04:48:08,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:48:08,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 04:48:08,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043020] [2020-10-15 04:48:08,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 04:48:08,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:08,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 04:48:08,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 04:48:08,458 INFO L87 Difference]: Start difference. First operand 7362 states and 8962 transitions. Second operand 3 states. [2020-10-15 04:48:08,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:08,738 INFO L93 Difference]: Finished difference Result 13750 states and 16729 transitions. [2020-10-15 04:48:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 04:48:08,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 458 [2020-10-15 04:48:08,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:08,739 INFO L225 Difference]: With dead ends: 13750 [2020-10-15 04:48:08,739 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 04:48:08,764 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 [2020-10-15 04:48:08,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 04:48:08,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 04:48:08,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 04:48:08,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 04:48:08,765 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 458 [2020-10-15 04:48:08,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:08,765 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 04:48:08,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 04:48:08,766 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 04:48:08,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 04:48:08,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 04:48:08,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.