/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:20:04,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:20:04,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:20:04,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:20:04,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:20:04,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:20:04,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:20:04,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:20:04,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:20:04,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:20:04,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:20:04,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:20:04,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:20:04,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:20:04,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:20:04,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:20:04,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:20:04,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:20:04,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:20:04,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:20:04,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:20:04,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:20:04,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:20:04,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:20:04,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:20:04,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:20:04,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:20:04,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:20:04,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:20:04,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:20:04,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:20:04,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:20:04,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:20:04,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:20:04,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:20:04,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:20:04,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:20:04,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:20:04,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:20:04,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:20:04,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:20:04,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:20:04,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:20:04,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:20:04,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:20:04,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:20:04,552 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:20:04,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:20:04,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:20:04,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:20:04,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:20:04,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:20:04,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:20:04,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:20:04,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:20:04,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:20:04,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:20:04,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:20:04,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:20:04,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:20:04,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:20:04,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:20:04,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:20:04,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:20:04,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:20:04,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:20:04,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:20:04,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:20:04,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:20:04,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:20:04,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:20:04,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:20:05,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:20:05,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:20:05,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:20:05,050 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:20:05,050 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:20:05,052 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c [2020-09-25 04:20:05,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49c4f226d/832fe00189ef4f14bc87d8c4b4cd142d/FLAG59deb4769 [2020-09-25 04:20:05,691 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:20:05,691 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c [2020-09-25 04:20:05,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49c4f226d/832fe00189ef4f14bc87d8c4b4cd142d/FLAG59deb4769 [2020-09-25 04:20:06,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49c4f226d/832fe00189ef4f14bc87d8c4b4cd142d [2020-09-25 04:20:06,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:20:06,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:20:06,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:20:06,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:20:06,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:20:06,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:20:06" (1/1) ... [2020-09-25 04:20:06,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7d2fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:06, skipping insertion in model container [2020-09-25 04:20:06,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:20:06" (1/1) ... [2020-09-25 04:20:06,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:20:06,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:20:06,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:20:06,327 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:20:06,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:20:06,360 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:20:06,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:06 WrapperNode [2020-09-25 04:20:06,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:20:06,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:20:06,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:20:06,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:20:06,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:06" (1/1) ... [2020-09-25 04:20:06,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:06" (1/1) ... [2020-09-25 04:20:06,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:06" (1/1) ... [2020-09-25 04:20:06,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:06" (1/1) ... [2020-09-25 04:20:06,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:06" (1/1) ... [2020-09-25 04:20:06,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:06" (1/1) ... [2020-09-25 04:20:06,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:06" (1/1) ... [2020-09-25 04:20:06,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:20:06,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:20:06,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:20:06,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:20:06,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:20:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:20:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:20:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 04:20:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:20:06,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:20:06,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:20:06,559 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 04:20:06,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:20:06,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:20:06,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:20:06,747 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:20:06,747 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:20:06,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:20:06 BoogieIcfgContainer [2020-09-25 04:20:06,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:20:06,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:20:06,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:20:06,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:20:06,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:20:06" (1/3) ... [2020-09-25 04:20:06,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2013459c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:20:06, skipping insertion in model container [2020-09-25 04:20:06,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:06" (2/3) ... [2020-09-25 04:20:06,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2013459c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:20:06, skipping insertion in model container [2020-09-25 04:20:06,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:20:06" (3/3) ... [2020-09-25 04:20:06,763 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i15_o15-2.c [2020-09-25 04:20:06,776 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:20:06,786 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:20:06,812 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:20:06,850 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:20:06,850 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:20:06,851 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:20:06,851 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:20:06,851 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:20:06,852 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:20:06,852 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:20:06,852 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:20:06,878 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 04:20:06,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 04:20:06,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:06,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:06,890 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:06,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:06,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 04:20:06,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:06,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366044417] [2020-09-25 04:20:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:07,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:07,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:20:07,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:07,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 04:20:07,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:07,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:20:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:20:07,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:07,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 04:20:07,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:07,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:07,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:07,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:07,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:20:07,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:07,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:07,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:07,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:07,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:07,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:07,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:07,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:07,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:07,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:07,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:20:07,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:07,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:07,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:07,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:07,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:07,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:20:07,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366044417] [2020-09-25 04:20:07,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:20:07,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:20:07,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642692346] [2020-09-25 04:20:07,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:20:07,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:07,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:20:07,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:20:07,440 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 04:20:07,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:07,533 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 04:20:07,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:20:07,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 04:20:07,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:07,549 INFO L225 Difference]: With dead ends: 37 [2020-09-25 04:20:07,550 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 04:20:07,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:20:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 04:20:07,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 04:20:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 04:20:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 04:20:07,606 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 04:20:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:07,607 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 04:20:07,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:20:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 04:20:07,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 04:20:07,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:07,610 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:07,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:20:07,611 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:07,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:07,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 04:20:07,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:07,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703857230] [2020-09-25 04:20:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:07,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:08,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 04:20:08,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:08,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-09-25 04:20:08,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:08,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:20:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:20:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 04:20:08,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:08,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:08,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:08,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:08,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:08,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:08,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:08,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:08,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:08,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:08,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:08,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:08,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:08,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 04:20:08,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:08,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:08,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:08,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:08,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:08,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:08,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:08,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:20:08,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:08,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:08,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:08,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:08,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:08,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:20:08,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703857230] [2020-09-25 04:20:08,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:08,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:20:08,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833029951] [2020-09-25 04:20:08,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:20:08,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:08,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:20:08,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:20:08,261 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 04:20:08,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:08,325 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 04:20:08,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:20:08,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 04:20:08,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:08,327 INFO L225 Difference]: With dead ends: 34 [2020-09-25 04:20:08,327 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 04:20:08,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:20:08,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 04:20:08,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 04:20:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 04:20:08,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 04:20:08,337 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 04:20:08,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:08,337 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 04:20:08,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:20:08,338 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 04:20:08,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 04:20:08,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:08,339 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:08,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:20:08,340 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:08,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:08,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 04:20:08,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:08,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406085302] [2020-09-25 04:20:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:08,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:08,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:20:08,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:08,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-09-25 04:20:08,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:08,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:20:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 04:20:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:20:08,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:08,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:08,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:08,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:08,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:20:08,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:08,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:08,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:08,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:08,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:09,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:09,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:09,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 04:20:09,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:09,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:09,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:09,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:09,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:09,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:09,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:09,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:09,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:09,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 04:20:09,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:09,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:09,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:09,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:09,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:09,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:09,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:09,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:09,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:20:09,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:09,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:09,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:09,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:09,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:09,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 04:20:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 04:20:09,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406085302] [2020-09-25 04:20:09,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:09,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:20:09,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507106779] [2020-09-25 04:20:09,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:20:09,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:09,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:20:09,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:20:09,199 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-25 04:20:09,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:09,278 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 04:20:09,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:20:09,278 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 04:20:09,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:09,280 INFO L225 Difference]: With dead ends: 39 [2020-09-25 04:20:09,280 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 04:20:09,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:20:09,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 04:20:09,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 04:20:09,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 04:20:09,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 04:20:09,288 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 04:20:09,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:09,288 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 04:20:09,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:20:09,289 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 04:20:09,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 04:20:09,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:09,290 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:09,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:20:09,291 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:09,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:09,291 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 04:20:09,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:09,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520271387] [2020-09-25 04:20:09,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:09,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:10,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 04:20:10,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-09-25 04:20:10,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:10,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 04:20:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 04:20:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:20:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:10,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:10,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:10,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:10,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:10,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:10,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:10,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:10,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:10,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:10,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:10,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:10,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:10,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 04:20:10,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:10,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:10,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:10,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:10,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:10,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:10,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:10,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 04:20:10,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:10,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:10,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:10,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:10,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:10,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:10,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:10,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 04:20:10,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:10,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:10,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:10,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:10,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:10,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:10,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:10,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:10,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:10,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:10,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:20:10,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:10,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:10,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 04:20:10,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520271387] [2020-09-25 04:20:10,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:10,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 04:20:10,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284334437] [2020-09-25 04:20:10,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 04:20:10,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:10,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 04:20:10,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:20:10,667 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-25 04:20:10,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:10,777 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 04:20:10,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:20:10,777 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 04:20:10,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:10,779 INFO L225 Difference]: With dead ends: 44 [2020-09-25 04:20:10,779 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 04:20:10,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:20:10,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 04:20:10,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 04:20:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 04:20:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 04:20:10,795 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 04:20:10,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:10,795 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 04:20:10,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 04:20:10,800 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 04:20:10,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 04:20:10,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:10,803 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:10,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:20:10,804 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:10,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:10,804 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 04:20:10,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:10,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908911065] [2020-09-25 04:20:10,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:10,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:12,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:12,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 04:20:12,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:12,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1532 [2020-09-25 04:20:12,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:12,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:20:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 04:20:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:20:12,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:12,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:12,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:12,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:12,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:12,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:12,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:12,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:12,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:12,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:12,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:12,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:12,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:12,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:12,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:12,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:12,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:20:12,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:12,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 04:20:12,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:12,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:12,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:12,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:12,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:20:12,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:12,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:12,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:12,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:12,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:12,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:12,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 04:20:12,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:12,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:12,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:12,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:12,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:12,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:12,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:12,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:12,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:12,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:12,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 04:20:12,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:12,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:12,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:12,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:12,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:12,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:12,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:12,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:12,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 04:20:12,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:12,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:12,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:13,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:13,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:13,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:13,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:13,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:13,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:20:13,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:13,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:13,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:13,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 04:20:13,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908911065] [2020-09-25 04:20:13,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:13,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 04:20:13,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913167219] [2020-09-25 04:20:13,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 04:20:13,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:13,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 04:20:13,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:20:13,057 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-25 04:20:13,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:13,176 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 04:20:13,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:20:13,176 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-25 04:20:13,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:13,178 INFO L225 Difference]: With dead ends: 49 [2020-09-25 04:20:13,178 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 04:20:13,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 04:20:13,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 04:20:13,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 04:20:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 04:20:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 04:20:13,186 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 04:20:13,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:13,187 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 04:20:13,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 04:20:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 04:20:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 04:20:13,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:13,189 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:13,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:20:13,189 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:13,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:13,190 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 04:20:13,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:13,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621299896] [2020-09-25 04:20:13,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:13,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:13,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:15,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:20:15,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:15,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2145 [2020-09-25 04:20:15,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:15,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 04:20:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 04:20:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:20:15,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:15,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:15,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:15,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:15,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:15,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:15,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:15,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:15,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:20:15,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:15,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:15,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:20:15,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:15,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 04:20:15,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:15,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:15,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:20:15,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:15,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:20:15,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:15,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:15,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:15,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:20:15,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:15,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 04:20:15,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:15,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:20:15,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:15,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:16,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:16,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:16,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:16,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 04:20:16,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:16,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:16,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:16,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:16,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:16,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:16,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:16,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:16,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:16,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:16,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 04:20:16,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:16,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:16,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:16,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:16,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:16,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:16,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:16,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:16,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:20:16,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:16,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:16,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:16,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:16,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:16,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:16,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:16,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:16,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:20:16,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:16,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:16,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:16,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:16,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:16,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 04:20:16,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621299896] [2020-09-25 04:20:16,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:16,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 04:20:16,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763064165] [2020-09-25 04:20:16,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 04:20:16,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:16,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 04:20:16,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:20:16,308 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-25 04:20:16,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:16,496 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 04:20:16,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 04:20:16,498 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 04:20:16,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:16,499 INFO L225 Difference]: With dead ends: 54 [2020-09-25 04:20:16,499 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 04:20:16,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-09-25 04:20:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 04:20:16,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 04:20:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 04:20:16,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 04:20:16,514 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 04:20:16,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:16,514 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 04:20:16,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 04:20:16,515 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 04:20:16,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 04:20:16,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:16,518 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:16,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:20:16,519 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:16,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:16,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 04:20:16,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:16,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464974484] [2020-09-25 04:20:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:16,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:16,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:19,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:19,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:20:19,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:19,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2729 [2020-09-25 04:20:19,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:19,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 04:20:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 04:20:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 04:20:19,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:19,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:19,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:19,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:19,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:19,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:19,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:19,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:19,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:19,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:19,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:19,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:19,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:19,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:19,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:20:19,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:19,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 04:20:19,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:19,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:20:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:19,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 04:20:19,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:19,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:19,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:19,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:19,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:20:19,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 04:20:19,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:19,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:20:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:20:19,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:19,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:19,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:20,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:20:20,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:20,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 04:20:20,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:20,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:20,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:20:20,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:20,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:20,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:20,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:20,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:20,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 04:20:20,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:20,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:20,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:20,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:20,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:20,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:20,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:20,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 04:20:20,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:20,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:20,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:20,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:20,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:20,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:20:20,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:20,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:20,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:20,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:20:20,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:20,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:20,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:20,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:20:20,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:20,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:20,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:20,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:20,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:20:20,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:20,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:20,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:20,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:20,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:20,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 04:20:20,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464974484] [2020-09-25 04:20:20,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:20,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 04:20:20,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799301200] [2020-09-25 04:20:20,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 04:20:20,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:20,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 04:20:20,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 04:20:20,543 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-09-25 04:20:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:20,718 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 04:20:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 04:20:20,718 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-09-25 04:20:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:20,720 INFO L225 Difference]: With dead ends: 59 [2020-09-25 04:20:20,720 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 04:20:20,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-25 04:20:20,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 04:20:20,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 04:20:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 04:20:20,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 04:20:20,735 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 04:20:20,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:20,736 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 04:20:20,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 04:20:20,736 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 04:20:20,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 04:20:20,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:20,738 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:20,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:20:20,739 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:20,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:20,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 04:20:20,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:20,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645453925] [2020-09-25 04:20:20,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:20,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:24,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:24,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 04:20:24,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:24,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3630 [2020-09-25 04:20:24,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:24,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 04:20:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 04:20:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:20:24,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:24,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:24,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:24,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:24,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:24,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:24,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:24,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:24,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:24,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:24,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:24,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 04:20:24,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:24,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-09-25 04:20:24,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:24,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:20:24,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:24,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:20:24,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:24,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:24,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:20:25,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:25,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 04:20:25,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:20:25,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 04:20:25,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:25,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:20:25,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 04:20:25,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:20:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:20:25,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:25,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:20:25,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:25,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 04:20:25,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:20:25,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:25,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:25,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:25,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 04:20:25,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:25,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:25,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:25,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:25,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 04:20:25,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:25,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:25,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:25,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:25,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:25,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:20:25,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:25,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:25,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:25,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:25,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:20:25,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:25,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:25,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 04:20:25,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645453925] [2020-09-25 04:20:25,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:25,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 04:20:25,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138147879] [2020-09-25 04:20:25,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 04:20:25,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:25,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 04:20:25,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:20:25,776 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 19 states. [2020-09-25 04:20:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:25,947 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 04:20:25,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 04:20:25,948 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 72 [2020-09-25 04:20:25,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:25,949 INFO L225 Difference]: With dead ends: 64 [2020-09-25 04:20:25,949 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 04:20:25,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-09-25 04:20:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 04:20:25,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 04:20:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 04:20:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 04:20:25,963 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 04:20:25,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:25,964 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 04:20:25,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 04:20:25,964 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 04:20:25,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 04:20:25,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:25,966 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:25,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:20:25,966 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:25,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:25,966 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 04:20:25,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:25,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688720546] [2020-09-25 04:20:25,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:26,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:26,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:30,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:30,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 04:20:30,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:30,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4618 [2020-09-25 04:20:30,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:30,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:30,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 04:20:30,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 04:20:30,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 04:20:30,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:30,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:30,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:30,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:30,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:30,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:30,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:30,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:30,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:30,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:30,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:30,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:30,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:30,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:30,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:31,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:31,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 04:20:31,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:31,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-25 04:20:31,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:31,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:31,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 04:20:31,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:31,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 04:20:31,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:31,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:31,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:31,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:31,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 04:20:31,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:31,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-25 04:20:31,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:31,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:31,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:20:31,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:31,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:20:31,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:31,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:31,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:31,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:31,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:20:31,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:31,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 04:20:31,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:31,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:20:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:31,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 04:20:31,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:31,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:31,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:31,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:31,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:20:31,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:31,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 04:20:31,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:31,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:31,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:20:31,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:31,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:20:31,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:31,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:31,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:31,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:20:31,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:31,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 04:20:31,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:31,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:31,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:31,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:31,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:20:31,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:32,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:32,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:32,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:32,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:32,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:32,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 04:20:32,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:32,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:32,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:32,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:32,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:32,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:32,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:32,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 04:20:32,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:32,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:32,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:32,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:32,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:32,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:32,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:32,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:32,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:20:32,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:32,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:32,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:32,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:32,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:32,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:32,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:32,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:32,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:20:32,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:32,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:32,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 04:20:32,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688720546] [2020-09-25 04:20:32,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:32,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 04:20:32,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070878770] [2020-09-25 04:20:32,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 04:20:32,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:32,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 04:20:32,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 04:20:32,402 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-25 04:20:32,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:32,607 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 04:20:32,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 04:20:32,608 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-25 04:20:32,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:32,610 INFO L225 Difference]: With dead ends: 69 [2020-09-25 04:20:32,610 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 04:20:32,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-09-25 04:20:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 04:20:32,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 04:20:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 04:20:32,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 04:20:32,619 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 04:20:32,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:32,619 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 04:20:32,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 04:20:32,620 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 04:20:32,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 04:20:32,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:32,621 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:32,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:20:32,621 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:32,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:32,622 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 04:20:32,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:32,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024395490] [2020-09-25 04:20:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:32,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:32,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:37,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:37,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 04:20:37,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:37,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:20:37,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:37,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:37,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 04:20:37,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 04:20:37,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 04:20:37,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:37,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:37,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:37,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:37,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:37,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:37,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:37,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:37,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:37,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:37,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:37,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:37,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:37,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:38,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:38,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 04:20:38,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-09-25 04:20:38,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:38,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 04:20:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 04:20:38,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:38,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:38,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:38,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:38,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 04:20:38,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:38,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-09-25 04:20:38,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:38,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:38,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 04:20:38,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:38,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 04:20:38,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:38,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:38,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:39,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:39,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 04:20:39,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 04:20:39,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:39,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:20:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:20:39,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:39,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:39,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:39,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:39,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:20:39,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:39,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 04:20:39,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:39,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:20:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 04:20:39,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:39,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:39,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:39,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:20:39,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:39,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 04:20:39,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:39,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:39,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:20:39,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:39,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:20:39,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:39,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:39,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:39,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:39,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:20:39,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:39,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 04:20:39,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:39,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:39,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:39,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:39,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:20:39,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:39,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:39,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:39,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:39,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:39,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:39,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 04:20:39,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:39,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:39,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:39,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:39,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:39,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:39,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:39,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:39,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:39,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:39,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:39,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 04:20:39,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:39,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:39,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:39,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:39,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:39,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:39,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:39,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:39,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:39,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:39,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:39,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:20:39,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:39,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:39,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:39,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:39,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:39,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:40,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:40,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:40,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:40,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:40,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:20:40,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:40,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:40,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:40,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:40,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:40,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:40,071 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 04:20:40,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024395490] [2020-09-25 04:20:40,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:40,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 04:20:40,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272941588] [2020-09-25 04:20:40,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 04:20:40,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:40,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 04:20:40,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-09-25 04:20:40,074 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 23 states. [2020-09-25 04:20:40,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:40,323 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 04:20:40,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 04:20:40,324 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 88 [2020-09-25 04:20:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:40,325 INFO L225 Difference]: With dead ends: 74 [2020-09-25 04:20:40,326 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 04:20:40,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 04:20:40,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 04:20:40,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 04:20:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 04:20:40,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 04:20:40,348 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 04:20:40,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:40,348 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 04:20:40,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 04:20:40,349 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 04:20:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 04:20:40,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:40,350 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:40,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 04:20:40,350 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:40,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:40,353 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 04:20:40,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:40,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707924121] [2020-09-25 04:20:40,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:40,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:40,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:45,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:45,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 04:20:45,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:45,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 04:20:45,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:45,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 04:20:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 04:20:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 04:20:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:45,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:45,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:45,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:45,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:45,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:45,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:45,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:45,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:45,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:45,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:45,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:45,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:45,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 04:20:45,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:45,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-09-25 04:20:45,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:45,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 04:20:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 04:20:45,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:46,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:46,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:46,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:46,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 04:20:46,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:46,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-09-25 04:20:46,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:46,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 04:20:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 04:20:46,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:46,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:46,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:46,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:46,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 04:20:46,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:46,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-09-25 04:20:46,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:46,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:46,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 04:20:46,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:46,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 04:20:46,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:46,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:46,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:47,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:47,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 04:20:47,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:47,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-25 04:20:47,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:47,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:20:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:20:47,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:47,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:47,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:47,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:47,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:20:47,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:47,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 04:20:47,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:47,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:47,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:20:47,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:47,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 04:20:47,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:47,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:47,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:47,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:47,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:20:47,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:47,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 04:20:47,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:47,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:47,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:20:47,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:47,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:20:47,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:47,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:47,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:47,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:47,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:20:47,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:47,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 04:20:47,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:47,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:47,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:47,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:47,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:20:47,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:47,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:47,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:47,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:47,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:47,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:47,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 04:20:47,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:47,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:47,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:47,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:47,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:47,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:47,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:47,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:48,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:48,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:48,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:48,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 04:20:48,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:48,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:48,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:48,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:48,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:48,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:48,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:48,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:48,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:20:48,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:48,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:48,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:48,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:48,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:48,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:48,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:48,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:20:48,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:48,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:48,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-25 04:20:48,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707924121] [2020-09-25 04:20:48,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:48,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 04:20:48,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059556529] [2020-09-25 04:20:48,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 04:20:48,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:48,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 04:20:48,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-25 04:20:48,245 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 25 states. [2020-09-25 04:20:48,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:48,494 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-25 04:20:48,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 04:20:48,495 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 96 [2020-09-25 04:20:48,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:48,497 INFO L225 Difference]: With dead ends: 79 [2020-09-25 04:20:48,497 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 04:20:48,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 04:20:48,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 04:20:48,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-25 04:20:48,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 04:20:48,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-09-25 04:20:48,506 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-09-25 04:20:48,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:48,507 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-09-25 04:20:48,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 04:20:48,507 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-09-25 04:20:48,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 04:20:48,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:48,508 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:48,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 04:20:48,509 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:48,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:48,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-09-25 04:20:48,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:48,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376429724] [2020-09-25 04:20:48,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:48,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:48,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:53,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:53,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 04:20:53,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:53,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:20:53,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:53,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 04:20:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 04:20:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 04:20:53,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:53,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:53,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:53,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:53,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:53,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:53,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:53,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:53,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:53,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:53,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:53,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:53,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:53,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:53,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:54,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:54,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 04:20:54,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:54,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-09-25 04:20:54,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:54,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 04:20:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 04:20:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:54,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:54,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:54,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:54,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 04:20:54,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:54,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-09-25 04:20:54,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:54,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 04:20:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 04:20:54,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:54,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:54,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:55,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:55,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 04:20:55,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:55,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-09-25 04:20:55,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:55,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:55,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 04:20:55,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:55,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 04:20:55,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:55,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:55,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:55,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:55,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 04:20:55,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:55,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-09-25 04:20:55,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:55,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:55,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 04:20:55,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:55,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 04:20:55,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:55,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:55,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:56,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:56,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 04:20:56,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:56,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-25 04:20:56,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:56,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:20:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:20:56,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:56,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:56,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:56,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:56,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:20:56,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:56,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 04:20:56,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:56,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:56,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:20:56,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:56,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 04:20:56,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:56,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:56,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:56,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:56,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:20:56,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:56,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 04:20:56,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:56,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:20:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:20:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:20:56,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:56,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:56,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:56,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:20:56,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:56,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 04:20:56,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:56,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:56,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:56,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:20:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:20:56,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:56,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:57,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:57,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:57,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:57,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 04:20:57,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:57,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:57,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:57,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:57,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:20:57,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:57,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:57,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:57,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:57,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:57,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 04:20:57,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:57,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:57,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:57,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:20:57,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:57,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:57,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:57,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:57,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:57,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 04:20:57,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:57,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:57,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:57,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:57,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:57,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:20:57,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:57,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:57,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:57,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:57,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:57,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:20:57,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:57,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:57,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-25 04:20:57,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376429724] [2020-09-25 04:20:57,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:57,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 04:20:57,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197552295] [2020-09-25 04:20:57,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 04:20:57,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:57,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 04:20:57,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-25 04:20:57,487 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 27 states. [2020-09-25 04:20:57,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:57,793 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-09-25 04:20:57,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 04:20:57,794 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 104 [2020-09-25 04:20:57,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:57,796 INFO L225 Difference]: With dead ends: 84 [2020-09-25 04:20:57,796 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 04:20:57,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=385, Invalid=1097, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 04:20:57,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 04:20:57,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 04:20:57,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 04:20:57,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-25 04:20:57,815 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 104 [2020-09-25 04:20:57,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:57,816 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-25 04:20:57,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 04:20:57,816 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-25 04:20:57,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 04:20:57,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:57,819 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:57,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 04:20:57,820 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:57,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:57,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598415, now seen corresponding path program 12 times [2020-09-25 04:20:57,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:57,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231100505] [2020-09-25 04:20:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:57,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:58,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking...