/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-lopstr16/break-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:59:52,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:59:52,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:59:52,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:59:52,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:59:52,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:59:52,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:59:52,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:59:52,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:59:52,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:59:52,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:59:52,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:59:52,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:59:52,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:59:52,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:59:52,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:59:52,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:59:52,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:59:52,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:59:52,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:59:52,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:59:52,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:59:52,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:59:52,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:59:52,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:59:52,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:59:52,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:59:52,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:59:52,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:59:52,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:59:52,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:59:52,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:59:52,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:59:52,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:59:52,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:59:52,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:59:52,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:59:52,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:59:52,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:59:52,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:59:52,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:59:52,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 23:59:52,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:59:52,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:59:52,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:59:52,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:59:52,545 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:59:52,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:59:52,545 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:59:52,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:59:52,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:59:52,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:59:52,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:59:52,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:59:52,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:59:52,546 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:59:52,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:59:52,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:59:52,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:59:52,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:59:52,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:59:52,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:59:52,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:59:52,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:59:52,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:59:52,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:59:52,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:59:52,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:59:52,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:59:52,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:59:52,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:59:52,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:59:52,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:59:52,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:59:52,897 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:59:52,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:59:52,899 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:59:52,900 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/break-2.i [2020-10-13 23:59:52,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06a48daa4/b3062d850e304b1895660bd90d0d4259/FLAG91fd3a976 [2020-10-13 23:59:53,410 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:59:53,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-lopstr16/break-2.i [2020-10-13 23:59:53,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06a48daa4/b3062d850e304b1895660bd90d0d4259/FLAG91fd3a976 [2020-10-13 23:59:53,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06a48daa4/b3062d850e304b1895660bd90d0d4259 [2020-10-13 23:59:53,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:59:53,846 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:59:53,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:59:53,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:59:53,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:59:53,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:59:53" (1/1) ... [2020-10-13 23:59:53,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5d5e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:53, skipping insertion in model container [2020-10-13 23:59:53,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:59:53" (1/1) ... [2020-10-13 23:59:53,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:59:53,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:59:54,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:00:11,183 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:00:11,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:00:11,230 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:00:11,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:11 WrapperNode [2020-10-14 00:00:11,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:00:11,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:00:11,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:00:11,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:00:11,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:11" (1/1) ... [2020-10-14 00:00:11,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:11" (1/1) ... [2020-10-14 00:00:11,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:11" (1/1) ... [2020-10-14 00:00:11,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:11" (1/1) ... [2020-10-14 00:00:11,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:11" (1/1) ... [2020-10-14 00:00:11,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:11" (1/1) ... [2020-10-14 00:00:11,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:11" (1/1) ... [2020-10-14 00:00:11,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:00:11,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:00:11,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:00:11,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:00:11,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:00:11,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:00:11,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:00:11,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:00:11,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:00:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:00:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:00:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:00:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 00:00:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 00:00:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:00:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 00:00:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:00:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 00:00:11,641 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:00:11,641 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 00:00:11,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:00:11 BoogieIcfgContainer [2020-10-14 00:00:11,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:00:11,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:00:11,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:00:11,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:00:11,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:59:53" (1/3) ... [2020-10-14 00:00:11,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479cfcee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:00:11, skipping insertion in model container [2020-10-14 00:00:11,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:11" (2/3) ... [2020-10-14 00:00:11,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479cfcee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:00:11, skipping insertion in model container [2020-10-14 00:00:11,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:00:11" (3/3) ... [2020-10-14 00:00:11,658 INFO L109 eAbstractionObserver]: Analyzing ICFG break-2.i [2020-10-14 00:00:11,669 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:00:11,677 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:00:11,694 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:00:11,721 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:00:11,721 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:00:11,722 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:00:11,722 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:00:11,722 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:00:11,722 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:00:11,722 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:00:11,722 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:00:11,742 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-14 00:00:11,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 00:00:11,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:11,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:11,750 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:11,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:11,759 INFO L82 PathProgramCache]: Analyzing trace with hash 547567586, now seen corresponding path program 1 times [2020-10-14 00:00:11,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:11,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397409336] [2020-10-14 00:00:11,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:11,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:11,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:11,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:00:11,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:11,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 00:00:11,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:11,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:00:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:11,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:00:12,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:12,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:12,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:12,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 00:00:12,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:12,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:12,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:00:12,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397409336] [2020-10-14 00:00:12,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:00:12,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:00:12,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273340455] [2020-10-14 00:00:12,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:00:12,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:12,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:00:12,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:00:12,151 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-14 00:00:12,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:12,265 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2020-10-14 00:00:12,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:00:12,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-14 00:00:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:12,277 INFO L225 Difference]: With dead ends: 54 [2020-10-14 00:00:12,277 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 00:00:12,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:00:12,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 00:00:12,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2020-10-14 00:00:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 00:00:12,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-10-14 00:00:12,326 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 14 [2020-10-14 00:00:12,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:12,327 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-10-14 00:00:12,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:00:12,327 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-10-14 00:00:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 00:00:12,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:12,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:12,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:00:12,329 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:12,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:12,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1443476915, now seen corresponding path program 1 times [2020-10-14 00:00:12,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:12,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293264981] [2020-10-14 00:00:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:12,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:12,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:12,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:00:12,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:12,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 00:00:12,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:12,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:12,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:12,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:12,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:00:12,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:12,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:12,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:12,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:12,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:12,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:12,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:00:12,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:12,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:12,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:12,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:12,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:12,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:00:12,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293264981] [2020-10-14 00:00:12,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:00:12,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:00:12,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188151280] [2020-10-14 00:00:12,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:00:12,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:12,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:00:12,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:00:12,588 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 4 states. [2020-10-14 00:00:12,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:12,694 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2020-10-14 00:00:12,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:00:12,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 00:00:12,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:12,696 INFO L225 Difference]: With dead ends: 41 [2020-10-14 00:00:12,696 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 00:00:12,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:00:12,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 00:00:12,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-10-14 00:00:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 00:00:12,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-14 00:00:12,705 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2020-10-14 00:00:12,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:12,706 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-14 00:00:12,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:00:12,706 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-14 00:00:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 00:00:12,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:12,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:12,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:00:12,708 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:12,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:12,708 INFO L82 PathProgramCache]: Analyzing trace with hash 2000433480, now seen corresponding path program 1 times [2020-10-14 00:00:12,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:12,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006698055] [2020-10-14 00:00:12,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:12,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:12,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:12,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:13,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:13,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:00:13,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:00:13,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-14 00:00:13,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:13,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:00:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:00:13,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:13,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:13,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:13,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:13,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:13,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:13,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:00:13,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:13,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:13,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:00:13,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006698055] [2020-10-14 00:00:13,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:13,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:00:13,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519325494] [2020-10-14 00:00:13,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:00:13,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:13,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:00:13,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:00:13,157 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 5 states. [2020-10-14 00:00:13,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:13,333 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-10-14 00:00:13,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:00:13,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-14 00:00:13,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:13,335 INFO L225 Difference]: With dead ends: 51 [2020-10-14 00:00:13,335 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 00:00:13,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:00:13,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 00:00:13,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2020-10-14 00:00:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 00:00:13,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-14 00:00:13,353 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 17 [2020-10-14 00:00:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:13,353 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-14 00:00:13,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:00:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-14 00:00:13,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 00:00:13,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:13,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:13,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:00:13,357 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:13,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:13,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1356244077, now seen corresponding path program 2 times [2020-10-14 00:00:13,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:13,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317045434] [2020-10-14 00:00:13,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:13,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:13,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:13,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:13,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:00:13,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:00:13,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-14 00:00:13,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:13,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:00:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:00:13,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:13,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:13,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:13,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:13,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:13,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:13,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:13,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:13,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:13,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:13,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:13,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:13,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:00:13,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317045434] [2020-10-14 00:00:13,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:13,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:00:13,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183826967] [2020-10-14 00:00:13,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:00:13,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:13,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:00:13,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:00:13,782 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-10-14 00:00:13,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:13,939 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2020-10-14 00:00:13,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:00:13,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-14 00:00:13,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:13,941 INFO L225 Difference]: With dead ends: 64 [2020-10-14 00:00:13,942 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 00:00:13,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:00:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 00:00:13,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-10-14 00:00:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 00:00:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-14 00:00:13,952 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 20 [2020-10-14 00:00:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:13,952 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-14 00:00:13,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:00:13,953 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-14 00:00:13,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 00:00:13,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:13,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:13,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:00:13,954 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:13,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:13,955 INFO L82 PathProgramCache]: Analyzing trace with hash 223617832, now seen corresponding path program 3 times [2020-10-14 00:00:13,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:13,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020997045] [2020-10-14 00:00:13,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:13,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:13,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:14,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:14,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:14,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:14,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:14,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 00:00:14,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:00:14,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-14 00:00:14,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:14,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:00:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 00:00:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:00:14,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:14,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:14,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:14,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:14,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:14,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:14,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:00:14,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:14,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:14,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 00:00:14,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020997045] [2020-10-14 00:00:14,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:14,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:00:14,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164060619] [2020-10-14 00:00:14,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:00:14,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:14,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:00:14,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:00:14,371 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 6 states. [2020-10-14 00:00:14,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:14,539 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-14 00:00:14,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:00:14,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-14 00:00:14,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:14,542 INFO L225 Difference]: With dead ends: 72 [2020-10-14 00:00:14,542 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 00:00:14,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:00:14,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 00:00:14,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2020-10-14 00:00:14,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 00:00:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-14 00:00:14,567 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 23 [2020-10-14 00:00:14,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:14,569 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-14 00:00:14,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:00:14,569 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-14 00:00:14,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 00:00:14,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:14,571 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:14,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:00:14,572 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:14,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:14,573 INFO L82 PathProgramCache]: Analyzing trace with hash -655777626, now seen corresponding path program 1 times [2020-10-14 00:00:14,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:14,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747729456] [2020-10-14 00:00:14,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:14,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:14,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:14,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:14,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 00:00:14,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-14 00:00:14,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:14,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:14,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:00:14,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:14,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:00:14,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:15,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:15,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:15,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:15,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:15,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:15,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:00:15,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:15,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:00:15,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747729456] [2020-10-14 00:00:15,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:15,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:00:15,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083042347] [2020-10-14 00:00:15,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:00:15,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:15,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:00:15,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:00:15,057 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-14 00:00:15,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:15,239 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-10-14 00:00:15,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:00:15,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-14 00:00:15,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:15,241 INFO L225 Difference]: With dead ends: 77 [2020-10-14 00:00:15,241 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 00:00:15,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:00:15,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 00:00:15,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-10-14 00:00:15,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 00:00:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-14 00:00:15,258 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 24 [2020-10-14 00:00:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:15,259 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-14 00:00:15,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:00:15,259 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-14 00:00:15,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 00:00:15,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:15,263 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:15,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:00:15,264 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:15,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:15,264 INFO L82 PathProgramCache]: Analyzing trace with hash 147016161, now seen corresponding path program 2 times [2020-10-14 00:00:15,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:15,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028011185] [2020-10-14 00:00:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:15,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:15,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:16,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:16,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:00:16,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:16,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-14 00:00:16,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:16,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:16,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:00:16,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:16,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 00:00:16,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:16,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:16,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:16,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:16,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:16,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:16,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:00:16,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:16,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:16,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:16,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:16,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:16,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:00:16,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028011185] [2020-10-14 00:00:16,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:16,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:00:16,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498382169] [2020-10-14 00:00:16,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:00:16,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:16,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:00:16,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:00:16,326 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 8 states. [2020-10-14 00:00:16,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:16,519 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2020-10-14 00:00:16,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:00:16,519 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-14 00:00:16,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:16,521 INFO L225 Difference]: With dead ends: 90 [2020-10-14 00:00:16,521 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 00:00:16,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:00:16,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 00:00:16,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2020-10-14 00:00:16,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 00:00:16,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-10-14 00:00:16,534 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 27 [2020-10-14 00:00:16,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:16,534 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-10-14 00:00:16,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:00:16,535 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-10-14 00:00:16,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 00:00:16,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:16,536 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:16,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:00:16,536 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:16,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:16,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1798820550, now seen corresponding path program 3 times [2020-10-14 00:00:16,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:16,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678240917] [2020-10-14 00:00:16,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:16,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:16,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:17,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:17,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 00:00:17,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:17,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-14 00:00:17,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:17,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:00:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:00:17,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:17,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:17,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:17,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:17,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:17,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:17,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:00:17,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:17,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:17,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:00:17,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678240917] [2020-10-14 00:00:17,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:17,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:00:17,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835967761] [2020-10-14 00:00:17,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:00:17,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:17,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:00:17,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:00:17,225 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 9 states. [2020-10-14 00:00:17,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:17,441 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2020-10-14 00:00:17,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:00:17,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-14 00:00:17,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:17,443 INFO L225 Difference]: With dead ends: 103 [2020-10-14 00:00:17,443 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 00:00:17,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:00:17,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 00:00:17,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-10-14 00:00:17,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 00:00:17,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-10-14 00:00:17,452 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 30 [2020-10-14 00:00:17,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:17,453 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-10-14 00:00:17,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:00:17,453 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-10-14 00:00:17,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 00:00:17,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:17,454 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:17,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:00:17,455 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:17,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:17,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1031904319, now seen corresponding path program 4 times [2020-10-14 00:00:17,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:17,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915966242] [2020-10-14 00:00:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:17,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:17,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:18,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:18,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 00:00:18,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:18,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-14 00:00:18,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:18,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:00:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:18,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 00:00:18,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:18,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:18,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:18,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:18,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:18,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:18,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:18,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:18,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:00:18,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915966242] [2020-10-14 00:00:18,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:18,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:00:18,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877850004] [2020-10-14 00:00:18,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:00:18,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:18,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:00:18,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:00:18,260 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 10 states. [2020-10-14 00:00:18,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:18,546 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2020-10-14 00:00:18,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:00:18,547 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-14 00:00:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:18,549 INFO L225 Difference]: With dead ends: 116 [2020-10-14 00:00:18,549 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 00:00:18,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:00:18,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 00:00:18,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2020-10-14 00:00:18,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 00:00:18,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2020-10-14 00:00:18,574 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 33 [2020-10-14 00:00:18,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:18,574 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2020-10-14 00:00:18,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:00:18,575 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2020-10-14 00:00:18,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 00:00:18,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:18,577 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:18,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:00:18,578 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:18,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:18,578 INFO L82 PathProgramCache]: Analyzing trace with hash 526380262, now seen corresponding path program 5 times [2020-10-14 00:00:18,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:18,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904491031] [2020-10-14 00:00:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:18,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:19,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:19,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 00:00:19,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:19,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-10-14 00:00:19,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:19,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:19,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:00:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 00:00:19,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:19,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:19,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:19,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:19,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:19,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:19,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:19,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:19,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:19,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:19,711 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:00:19,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904491031] [2020-10-14 00:00:19,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:19,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:00:19,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873791481] [2020-10-14 00:00:19,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:00:19,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:19,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:00:19,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:00:19,714 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand 11 states. [2020-10-14 00:00:19,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:19,950 INFO L93 Difference]: Finished difference Result 129 states and 148 transitions. [2020-10-14 00:00:19,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:00:19,950 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-14 00:00:19,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:19,951 INFO L225 Difference]: With dead ends: 129 [2020-10-14 00:00:19,952 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 00:00:19,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:00:19,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 00:00:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2020-10-14 00:00:19,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 00:00:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-10-14 00:00:19,969 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 36 [2020-10-14 00:00:19,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:19,969 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-10-14 00:00:19,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:00:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-10-14 00:00:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 00:00:19,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:19,974 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:19,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:00:19,974 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:19,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:19,975 INFO L82 PathProgramCache]: Analyzing trace with hash -919169631, now seen corresponding path program 6 times [2020-10-14 00:00:19,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:19,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162141333] [2020-10-14 00:00:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:19,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:20,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:21,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:21,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 00:00:21,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:21,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1826 [2020-10-14 00:00:21,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:21,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:21,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:00:21,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:21,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:00:21,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:22,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:22,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:22,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:22,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:22,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:22,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:22,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:22,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:22,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:22,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:22,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:22,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 00:00:22,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162141333] [2020-10-14 00:00:22,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:22,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:00:22,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417561666] [2020-10-14 00:00:22,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:00:22,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:22,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:00:22,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:00:22,077 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 9 states. [2020-10-14 00:00:22,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:22,323 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-10-14 00:00:22,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:00:22,324 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-10-14 00:00:22,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:22,326 INFO L225 Difference]: With dead ends: 87 [2020-10-14 00:00:22,327 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 00:00:22,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:00:22,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 00:00:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-14 00:00:22,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 00:00:22,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2020-10-14 00:00:22,345 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 39 [2020-10-14 00:00:22,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:22,345 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2020-10-14 00:00:22,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:00:22,345 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2020-10-14 00:00:22,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 00:00:22,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:22,346 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:22,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:00:22,347 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:22,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:22,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1952407032, now seen corresponding path program 1 times [2020-10-14 00:00:22,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:22,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234178483] [2020-10-14 00:00:22,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:22,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:22,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:22,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:24,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:24,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:24,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 00:00:24,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:00:24,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2416 [2020-10-14 00:00:24,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:24,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:00:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:00:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:24,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:24,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:24,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:24,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:24,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:24,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:24,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:24,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:24,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:24,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 00:00:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:24,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:24,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:24,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:24,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:24,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:24,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:24,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:24,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:24,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:00:24,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:24,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:24,895 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 00:00:24,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234178483] [2020-10-14 00:00:24,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:24,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:00:24,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380652923] [2020-10-14 00:00:24,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:00:24,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:24,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:00:24,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:00:24,899 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand 12 states. [2020-10-14 00:00:25,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:25,170 INFO L93 Difference]: Finished difference Result 150 states and 169 transitions. [2020-10-14 00:00:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:00:25,171 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-14 00:00:25,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:25,173 INFO L225 Difference]: With dead ends: 150 [2020-10-14 00:00:25,173 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 00:00:25,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:00:25,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 00:00:25,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2020-10-14 00:00:25,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 00:00:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-10-14 00:00:25,188 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 48 [2020-10-14 00:00:25,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:25,188 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-10-14 00:00:25,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:00:25,189 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-10-14 00:00:25,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 00:00:25,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:25,196 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:25,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:00:25,196 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:25,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:25,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1127204403, now seen corresponding path program 2 times [2020-10-14 00:00:25,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:25,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046328747] [2020-10-14 00:00:25,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:25,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:25,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:25,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:26,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:29,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:29,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 00:00:29,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:00:29,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4153 [2020-10-14 00:00:29,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:29,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:29,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:00:29,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:29,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:00:29,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:29,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:29,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:29,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:29,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:29,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:29,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:29,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:29,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:29,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:29,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:29,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:29,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:29,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:00:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:29,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:29,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:29,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:29,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:29,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:29,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:29,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:00:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:29,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 2 proven. 126 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 00:00:29,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046328747] [2020-10-14 00:00:29,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:29,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:00:29,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875744460] [2020-10-14 00:00:29,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:00:29,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:29,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:00:29,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:00:29,553 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 13 states. [2020-10-14 00:00:29,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:29,815 INFO L93 Difference]: Finished difference Result 163 states and 184 transitions. [2020-10-14 00:00:29,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:00:29,815 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-14 00:00:29,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:29,817 INFO L225 Difference]: With dead ends: 163 [2020-10-14 00:00:29,817 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 00:00:29,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:00:29,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 00:00:29,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2020-10-14 00:00:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 00:00:29,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2020-10-14 00:00:29,829 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 51 [2020-10-14 00:00:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:29,829 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2020-10-14 00:00:29,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:00:29,830 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2020-10-14 00:00:29,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 00:00:29,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:29,833 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:29,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:00:29,833 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:29,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:29,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1908486168, now seen corresponding path program 3 times [2020-10-14 00:00:29,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:29,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216925451] [2020-10-14 00:00:29,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:29,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:29,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:30,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:33,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:00:33,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:00:33,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3184 [2020-10-14 00:00:33,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:33,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:33,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:00:33,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:33,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 00:00:33,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:33,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:33,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:33,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:33,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:33,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:33,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:33,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:33,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:33,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:33,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 00:00:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:33,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:33,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:33,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:33,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:33,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:33,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:33,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:33,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:00:33,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:33,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 2 proven. 155 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 00:00:33,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216925451] [2020-10-14 00:00:33,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:33,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:00:33,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061566267] [2020-10-14 00:00:33,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:00:33,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:33,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:00:33,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:00:33,192 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand 14 states. [2020-10-14 00:00:33,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:33,449 INFO L93 Difference]: Finished difference Result 176 states and 199 transitions. [2020-10-14 00:00:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:00:33,450 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-14 00:00:33,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:33,451 INFO L225 Difference]: With dead ends: 176 [2020-10-14 00:00:33,451 INFO L226 Difference]: Without dead ends: 113 [2020-10-14 00:00:33,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:00:33,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-14 00:00:33,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2020-10-14 00:00:33,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 00:00:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2020-10-14 00:00:33,463 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 54 [2020-10-14 00:00:33,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:33,464 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2020-10-14 00:00:33,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:00:33,465 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2020-10-14 00:00:33,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 00:00:33,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:33,466 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:33,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:00:33,466 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:33,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:33,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1649197037, now seen corresponding path program 4 times [2020-10-14 00:00:33,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:33,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193427875] [2020-10-14 00:00:33,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:33,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:34,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:37,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 00:00:37,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:00:37,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3674 [2020-10-14 00:00:37,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:37,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 00:00:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 00:00:37,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:37,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:37,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:37,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:37,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:37,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:00:37,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:37,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:37,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:37,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:37,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:00:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:37,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:37,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:37,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:37,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:37,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:37,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:37,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:37,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:37,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:00:37,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-14 00:00:37,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193427875] [2020-10-14 00:00:37,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:37,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:00:37,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687271329] [2020-10-14 00:00:37,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:00:37,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:37,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:00:37,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:00:37,407 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand 11 states. [2020-10-14 00:00:37,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:37,819 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2020-10-14 00:00:37,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:00:37,819 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-14 00:00:37,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:37,821 INFO L225 Difference]: With dead ends: 115 [2020-10-14 00:00:37,821 INFO L226 Difference]: Without dead ends: 113 [2020-10-14 00:00:37,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:00:37,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-14 00:00:37,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-14 00:00:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 00:00:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2020-10-14 00:00:37,845 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 57 [2020-10-14 00:00:37,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:37,846 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2020-10-14 00:00:37,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:00:37,846 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2020-10-14 00:00:37,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 00:00:37,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:37,847 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:37,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:00:37,847 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:37,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:37,848 INFO L82 PathProgramCache]: Analyzing trace with hash 2033603526, now seen corresponding path program 5 times [2020-10-14 00:00:37,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:37,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223400006] [2020-10-14 00:00:37,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:37,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:38,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:38,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:38,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:39,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:40,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:42,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:42,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:00:42,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:00:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:00:42,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:42,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:42,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:00:42,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 00:00:42,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:00:42,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:42,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:43,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:43,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:43,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:00:43,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:43,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:43,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:43,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:00:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:43,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:43,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:43,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:43,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:43,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:43,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:43,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:00:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:43,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:43,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:00:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:43,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:43,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:43,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:43,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:43,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:43,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:43,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:43,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:43,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:00:43,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:43,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 4 proven. 187 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 00:00:43,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223400006] [2020-10-14 00:00:43,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:43,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:00:43,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873410182] [2020-10-14 00:00:43,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:00:43,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:43,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:00:43,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:00:43,031 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand 15 states. [2020-10-14 00:00:43,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:43,305 INFO L93 Difference]: Finished difference Result 197 states and 220 transitions. [2020-10-14 00:00:43,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 00:00:43,305 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-10-14 00:00:43,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:43,307 INFO L225 Difference]: With dead ends: 197 [2020-10-14 00:00:43,307 INFO L226 Difference]: Without dead ends: 125 [2020-10-14 00:00:43,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:00:43,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-14 00:00:43,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2020-10-14 00:00:43,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 00:00:43,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-10-14 00:00:43,322 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 66 [2020-10-14 00:00:43,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:43,322 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-10-14 00:00:43,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:00:43,323 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-10-14 00:00:43,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 00:00:43,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:43,323 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:43,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:00:43,324 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:43,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:43,324 INFO L82 PathProgramCache]: Analyzing trace with hash -771669183, now seen corresponding path program 6 times [2020-10-14 00:00:43,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:43,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158687921] [2020-10-14 00:00:43,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:43,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:43,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:43,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:45,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:45,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:48,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:48,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 00:00:48,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:00:48,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 00:00:48,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:48,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:48,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:00:48,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:48,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:00:48,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:48,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:48,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:48,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:48,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:48,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:48,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:48,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:48,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 00:00:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:48,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:48,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:48,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:48,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:48,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:48,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:48,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:00:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:48,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:48,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:00:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:48,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:48,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:48,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:48,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:48,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:48,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:00:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 4 proven. 222 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 00:00:48,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158687921] [2020-10-14 00:00:48,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:48,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 00:00:48,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784732796] [2020-10-14 00:00:48,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 00:00:48,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:48,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 00:00:48,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:00:48,523 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 16 states. [2020-10-14 00:00:48,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:48,850 INFO L93 Difference]: Finished difference Result 210 states and 235 transitions. [2020-10-14 00:00:48,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 00:00:48,851 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2020-10-14 00:00:48,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:48,852 INFO L225 Difference]: With dead ends: 210 [2020-10-14 00:00:48,852 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 00:00:48,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=149, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:00:48,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 00:00:48,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2020-10-14 00:00:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 00:00:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 141 transitions. [2020-10-14 00:00:48,865 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 141 transitions. Word has length 69 [2020-10-14 00:00:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:48,866 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 141 transitions. [2020-10-14 00:00:48,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 00:00:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 141 transitions. [2020-10-14 00:00:48,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 00:00:48,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:48,874 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:48,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:00:48,875 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:48,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:48,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1177297434, now seen corresponding path program 7 times [2020-10-14 00:00:48,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:48,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344180715] [2020-10-14 00:00:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:48,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:49,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:49,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:49,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:49,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:50,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:53,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:53,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 00:00:53,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:00:53,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:00:53,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:53,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:53,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 00:00:53,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 00:00:53,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:54,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:54,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:54,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:54,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:54,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:54,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:54,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:54,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:54,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:54,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:54,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:54,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:54,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:00:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:54,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:54,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:54,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:54,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:54,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:54,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:54,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:00:54,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:54,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 00:00:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:54,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:54,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:54,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:54,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:54,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:54,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:54,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:00:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 4 proven. 106 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-10-14 00:00:54,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344180715] [2020-10-14 00:00:54,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:54,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:00:54,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499411688] [2020-10-14 00:00:54,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:00:54,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:54,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:00:54,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:00:54,250 INFO L87 Difference]: Start difference. First operand 129 states and 141 transitions. Second operand 13 states. [2020-10-14 00:00:54,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:54,742 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2020-10-14 00:00:54,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 00:00:54,743 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-10-14 00:00:54,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:54,744 INFO L225 Difference]: With dead ends: 135 [2020-10-14 00:00:54,744 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 00:00:54,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:00:54,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 00:00:54,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2020-10-14 00:00:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 00:00:54,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2020-10-14 00:00:54,758 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 72 [2020-10-14 00:00:54,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:54,759 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2020-10-14 00:00:54,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:00:54,759 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2020-10-14 00:00:54,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 00:00:54,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:54,760 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:54,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:00:54,762 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:54,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:54,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1677628243, now seen corresponding path program 8 times [2020-10-14 00:00:54,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:54,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484805186] [2020-10-14 00:00:54,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:54,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:54,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:55,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:55,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:55,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:56,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:57,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:57,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:58,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:59,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:59,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 00:00:59,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 00:00:59,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:00:59,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:59,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 00:00:59,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:59,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 00:00:59,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:59,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:59,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:59,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:59,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:59,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:59,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:59,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:59,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:59,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:59,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:59,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:59,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:59,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:00:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:59,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:59,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:59,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:59,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:59,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:59,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:59,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:59,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:00:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:59,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:59,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 00:00:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:59,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:59,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:59,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:59,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:59,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:59,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:59,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:00:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:59,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:59,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 00:00:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:59,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:59,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:59,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:59,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:59,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:59,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:59,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:00:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:59,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 6 proven. 260 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 00:00:59,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484805186] [2020-10-14 00:00:59,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:59,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 00:00:59,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123912715] [2020-10-14 00:00:59,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 00:00:59,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:59,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 00:00:59,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:00:59,977 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand 17 states. [2020-10-14 00:01:00,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:00,468 INFO L93 Difference]: Finished difference Result 231 states and 256 transitions. [2020-10-14 00:01:00,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 00:01:00,469 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 81 [2020-10-14 00:01:00,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:00,473 INFO L225 Difference]: With dead ends: 231 [2020-10-14 00:01:00,473 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 00:01:00,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:01:00,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 00:01:00,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 141. [2020-10-14 00:01:00,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 00:01:00,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 153 transitions. [2020-10-14 00:01:00,501 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 153 transitions. Word has length 81 [2020-10-14 00:01:00,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:00,501 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 153 transitions. [2020-10-14 00:01:00,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 00:01:00,502 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 153 transitions. [2020-10-14 00:01:00,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 00:01:00,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:00,503 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:00,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:01:00,504 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:00,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:00,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1389535624, now seen corresponding path program 9 times [2020-10-14 00:01:00,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:00,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215568028] [2020-10-14 00:01:00,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:00,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:00,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:01,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:01,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:02,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:03,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:03,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:03,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:03,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:03,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:04,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:05,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:05,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 00:01:05,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 00:01:05,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 00:01:05,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:05,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:05,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:01:05,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:05,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 00:01:05,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:05,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:05,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:05,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:05,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:05,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:05,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:05,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:05,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:05,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:05,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:05,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:01:05,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:01:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:05,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:05,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:05,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:05,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:05,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:05,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:05,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:05,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:01:05,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:01:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:05,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:05,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:05,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:05,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:05,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:05,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:05,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:05,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:05,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:05,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:05,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:01:05,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 00:01:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:05,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:05,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:05,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:05,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:05,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:05,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:05,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:05,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:05,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:05,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:05,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:01:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 6 proven. 301 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 00:01:05,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215568028] [2020-10-14 00:01:05,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:05,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:01:05,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854377580] [2020-10-14 00:01:05,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:01:05,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:05,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:01:05,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:01:05,792 INFO L87 Difference]: Start difference. First operand 141 states and 153 transitions. Second operand 18 states. [2020-10-14 00:01:06,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:06,289 INFO L93 Difference]: Finished difference Result 244 states and 271 transitions. [2020-10-14 00:01:06,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 00:01:06,290 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 84 [2020-10-14 00:01:06,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:06,292 INFO L225 Difference]: With dead ends: 244 [2020-10-14 00:01:06,292 INFO L226 Difference]: Without dead ends: 153 [2020-10-14 00:01:06,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=186, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:01:06,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-14 00:01:06,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2020-10-14 00:01:06,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-14 00:01:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2020-10-14 00:01:06,310 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 84 [2020-10-14 00:01:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:06,310 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2020-10-14 00:01:06,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:01:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2020-10-14 00:01:06,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 00:01:06,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:06,313 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:06,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 00:01:06,313 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:06,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:06,314 INFO L82 PathProgramCache]: Analyzing trace with hash 160924979, now seen corresponding path program 10 times [2020-10-14 00:01:06,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:06,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819231512] [2020-10-14 00:01:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:06,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:06,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:07,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:07,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:08,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:09,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:11,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:11,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:11,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:11,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:11,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:11,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:11,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:11,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:11,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:11,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:11,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:01:11,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:01:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:11,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:11,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:11,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:11,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:11,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:11,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:11,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:01:11,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 00:01:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:11,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:11,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:11,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:11,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:11,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:11,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:11,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:01:11,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:01:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:11,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:11,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:11,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:11,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:11,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:11,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:11,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:11,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:11,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:11,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:11,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:01:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 6 proven. 345 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 00:01:11,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819231512] [2020-10-14 00:01:11,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:11,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 00:01:11,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488631054] [2020-10-14 00:01:11,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 00:01:11,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:11,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 00:01:11,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:01:11,602 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 19 states. [2020-10-14 00:01:12,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:12,055 INFO L93 Difference]: Finished difference Result 257 states and 286 transitions. [2020-10-14 00:01:12,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 00:01:12,055 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 87 [2020-10-14 00:01:12,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:12,057 INFO L225 Difference]: With dead ends: 257 [2020-10-14 00:01:12,057 INFO L226 Difference]: Without dead ends: 161 [2020-10-14 00:01:12,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=206, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:01:12,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-14 00:01:12,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 157. [2020-10-14 00:01:12,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 00:01:12,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 171 transitions. [2020-10-14 00:01:12,071 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 171 transitions. Word has length 87 [2020-10-14 00:01:12,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:12,072 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 171 transitions. [2020-10-14 00:01:12,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 00:01:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 171 transitions. [2020-10-14 00:01:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 00:01:12,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:12,073 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:12,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 00:01:12,073 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:12,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:12,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1854447768, now seen corresponding path program 11 times [2020-10-14 00:01:12,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:12,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719044466] [2020-10-14 00:01:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:12,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:12,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:14,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:14,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:14,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:15,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:16,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:16,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:17,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:17,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:17,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 00:01:17,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 00:01:17,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-14 00:01:17,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:17,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 00:01:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 00:01:17,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:17,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:17,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:17,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:17,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:17,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:17,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:17,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:17,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:17,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 00:01:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:17,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:17,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:17,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:17,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:17,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:17,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:17,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:17,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:17,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 00:01:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:17,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:17,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:17,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:17,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:17,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:17,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:17,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:17,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 00:01:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:17,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:17,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:17,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:17,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:17,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:17,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:17,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:17,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 6 proven. 392 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 00:01:17,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719044466] [2020-10-14 00:01:17,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:17,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 00:01:17,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761765310] [2020-10-14 00:01:17,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 00:01:17,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:17,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 00:01:17,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:01:17,416 INFO L87 Difference]: Start difference. First operand 157 states and 171 transitions. Second operand 20 states. [2020-10-14 00:01:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:17,840 INFO L93 Difference]: Finished difference Result 270 states and 301 transitions. [2020-10-14 00:01:17,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 00:01:17,842 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 90 [2020-10-14 00:01:17,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:17,844 INFO L225 Difference]: With dead ends: 270 [2020-10-14 00:01:17,844 INFO L226 Difference]: Without dead ends: 169 [2020-10-14 00:01:17,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=227, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:01:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-14 00:01:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2020-10-14 00:01:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 00:01:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 180 transitions. [2020-10-14 00:01:17,857 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 180 transitions. Word has length 90 [2020-10-14 00:01:17,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:17,858 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 180 transitions. [2020-10-14 00:01:17,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 00:01:17,858 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 180 transitions. [2020-10-14 00:01:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 00:01:17,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:17,859 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:17,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 00:01:17,859 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:17,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:17,860 INFO L82 PathProgramCache]: Analyzing trace with hash 611028755, now seen corresponding path program 12 times [2020-10-14 00:01:17,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:17,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92811016] [2020-10-14 00:01:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:17,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:17,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:18,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:19,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:19,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:20,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:20,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:21,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:22,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:22,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 00:01:22,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:01:22,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:01:22,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:22,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 00:01:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 00:01:22,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:23,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:23,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:23,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:23,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:23,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:23,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:23,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:23,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:23,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:23,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:23,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:23,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:23,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:01:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:23,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:23,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:23,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:23,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:23,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:01:23,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:23,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:23,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:23,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 00:01:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:23,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:23,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:23,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:23,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:23,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:23,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:23,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:23,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:23,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:23,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:23,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:01:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:23,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:23,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:23,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:23,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:23,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:23,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:23,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:23,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:23,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:23,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 6 proven. 442 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 00:01:23,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92811016] [2020-10-14 00:01:23,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:23,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 00:01:23,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131491528] [2020-10-14 00:01:23,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 00:01:23,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:23,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 00:01:23,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:01:23,152 INFO L87 Difference]: Start difference. First operand 165 states and 180 transitions. Second operand 21 states. [2020-10-14 00:01:23,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:23,607 INFO L93 Difference]: Finished difference Result 283 states and 316 transitions. [2020-10-14 00:01:23,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 00:01:23,607 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2020-10-14 00:01:23,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:23,609 INFO L225 Difference]: With dead ends: 283 [2020-10-14 00:01:23,609 INFO L226 Difference]: Without dead ends: 177 [2020-10-14 00:01:23,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=249, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:01:23,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-14 00:01:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 173. [2020-10-14 00:01:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 00:01:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 189 transitions. [2020-10-14 00:01:23,623 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 189 transitions. Word has length 93 [2020-10-14 00:01:23,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:23,624 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 189 transitions. [2020-10-14 00:01:23,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 00:01:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 189 transitions. [2020-10-14 00:01:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 00:01:23,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:23,625 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:23,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 00:01:23,625 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:23,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:23,626 INFO L82 PathProgramCache]: Analyzing trace with hash 2008140472, now seen corresponding path program 13 times [2020-10-14 00:01:23,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:23,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253880926] [2020-10-14 00:01:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:23,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:23,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:23,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:24,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:25,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:25,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:26,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:26,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:26,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:28,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:28,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 00:01:28,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 00:01:28,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:01:28,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:28,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:28,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 00:01:28,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:28,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 00:01:28,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:28,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:28,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:28,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:28,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:28,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:28,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:28,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:28,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:28,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:28,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 00:01:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:28,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:28,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:28,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:28,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:28,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:28,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:28,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:28,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:28,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:01:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:28,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:28,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:28,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:28,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:28,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:28,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:28,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:28,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:28,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:28,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:28,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:28,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 00:01:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:28,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:28,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:28,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:28,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:28,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:01:28,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:28,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:28,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 6 proven. 495 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 00:01:28,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253880926] [2020-10-14 00:01:28,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:28,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 00:01:28,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398169773] [2020-10-14 00:01:28,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 00:01:28,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:28,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 00:01:28,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:01:28,927 INFO L87 Difference]: Start difference. First operand 173 states and 189 transitions. Second operand 22 states. [2020-10-14 00:01:29,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:29,405 INFO L93 Difference]: Finished difference Result 296 states and 331 transitions. [2020-10-14 00:01:29,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 00:01:29,406 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 96 [2020-10-14 00:01:29,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:29,407 INFO L225 Difference]: With dead ends: 296 [2020-10-14 00:01:29,408 INFO L226 Difference]: Without dead ends: 185 [2020-10-14 00:01:29,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=272, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:01:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-14 00:01:29,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 181. [2020-10-14 00:01:29,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 00:01:29,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 198 transitions. [2020-10-14 00:01:29,424 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 198 transitions. Word has length 96 [2020-10-14 00:01:29,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:29,424 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 198 transitions. [2020-10-14 00:01:29,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 00:01:29,424 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 198 transitions. [2020-10-14 00:01:29,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 00:01:29,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:29,425 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:29,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 00:01:29,426 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:29,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:29,426 INFO L82 PathProgramCache]: Analyzing trace with hash 835236083, now seen corresponding path program 14 times [2020-10-14 00:01:29,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:29,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520541747] [2020-10-14 00:01:29,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:29,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:29,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:29,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:30,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:31,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:31,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:31,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:31,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:33,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:33,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:33,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:33,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:34,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:34,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:01:34,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 00:01:34,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:01:34,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:34,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 00:01:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 00:01:34,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:34,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:34,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:34,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:34,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:34,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:34,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:34,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:34,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:34,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:34,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:34,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:34,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:34,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 00:01:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:34,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:34,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:34,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:34,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:34,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:01:34,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:34,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:34,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:34,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 00:01:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:34,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:34,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:34,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:34,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:34,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:34,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:34,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:34,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:34,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:01:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:34,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:34,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:34,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:34,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:01:34,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:34,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:34,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 6 proven. 551 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 00:01:34,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520541747] [2020-10-14 00:01:34,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:34,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 00:01:34,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283084323] [2020-10-14 00:01:34,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 00:01:34,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:34,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 00:01:34,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:01:34,756 INFO L87 Difference]: Start difference. First operand 181 states and 198 transitions. Second operand 23 states. [2020-10-14 00:01:35,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:35,319 INFO L93 Difference]: Finished difference Result 309 states and 346 transitions. [2020-10-14 00:01:35,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 00:01:35,320 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 99 [2020-10-14 00:01:35,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:35,322 INFO L225 Difference]: With dead ends: 309 [2020-10-14 00:01:35,322 INFO L226 Difference]: Without dead ends: 193 [2020-10-14 00:01:35,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:01:35,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-14 00:01:35,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2020-10-14 00:01:35,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 00:01:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 207 transitions. [2020-10-14 00:01:35,338 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 207 transitions. Word has length 99 [2020-10-14 00:01:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:35,339 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 207 transitions. [2020-10-14 00:01:35,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 00:01:35,339 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 207 transitions. [2020-10-14 00:01:35,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 00:01:35,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:35,340 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:35,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 00:01:35,341 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:35,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:35,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1600463656, now seen corresponding path program 15 times [2020-10-14 00:01:35,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:35,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682630087] [2020-10-14 00:01:35,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:35,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:35,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:36,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:36,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:37,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:37,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:37,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:37,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:38,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:38,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:40,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:40,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 00:01:40,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 00:01:40,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:01:40,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:40,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 00:01:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 00:01:40,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:40,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:40,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:40,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:40,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:40,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:40,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:40,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:40,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:40,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:40,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:40,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:40,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 00:01:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:40,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:40,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:40,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:40,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:40,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:01:40,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:40,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:40,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:40,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:01:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:40,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:40,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:40,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:40,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:40,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:01:40,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:40,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:40,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:40,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:40,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:40,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:40,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 00:01:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:40,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:40,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:40,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:40,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:40,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:01:40,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:40,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:40,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 6 proven. 610 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 00:01:40,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682630087] [2020-10-14 00:01:40,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:40,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 00:01:40,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682605326] [2020-10-14 00:01:40,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 00:01:40,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:40,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 00:01:40,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:01:40,679 INFO L87 Difference]: Start difference. First operand 189 states and 207 transitions. Second operand 24 states. [2020-10-14 00:01:41,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:41,205 INFO L93 Difference]: Finished difference Result 322 states and 361 transitions. [2020-10-14 00:01:41,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:01:41,205 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 102 [2020-10-14 00:01:41,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:41,206 INFO L225 Difference]: With dead ends: 322 [2020-10-14 00:01:41,207 INFO L226 Difference]: Without dead ends: 201 [2020-10-14 00:01:41,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=279, Invalid=321, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:01:41,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-14 00:01:41,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 197. [2020-10-14 00:01:41,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-14 00:01:41,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 216 transitions. [2020-10-14 00:01:41,222 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 216 transitions. Word has length 102 [2020-10-14 00:01:41,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:41,222 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 216 transitions. [2020-10-14 00:01:41,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 00:01:41,222 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 216 transitions. [2020-10-14 00:01:41,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 00:01:41,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:41,223 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:41,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 00:01:41,224 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:41,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:41,224 INFO L82 PathProgramCache]: Analyzing trace with hash -58922285, now seen corresponding path program 16 times [2020-10-14 00:01:41,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:41,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978096284] [2020-10-14 00:01:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:41,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:41,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:41,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:42,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:43,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:43,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:44,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:44,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:44,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:45,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:46,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:46,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 00:01:46,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 00:01:46,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:01:46,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:46,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:46,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:01:46,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:46,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 00:01:46,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:01:46,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:46,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:46,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:46,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:46,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:46,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:46,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:46,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:46,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:46,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:46,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:46,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:01:46,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:01:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:46,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:46,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:46,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:46,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:46,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:46,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:46,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:46,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:46,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:46,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 00:01:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:46,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:46,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:46,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:46,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:46,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:46,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:46,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:46,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:01:46,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:01:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:46,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:46,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:46,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:46,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:46,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:46,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:46,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:46,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:46,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:01:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 6 proven. 672 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 00:01:46,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978096284] [2020-10-14 00:01:46,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:46,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 00:01:46,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756604108] [2020-10-14 00:01:46,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 00:01:46,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:46,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 00:01:46,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:01:46,701 INFO L87 Difference]: Start difference. First operand 197 states and 216 transitions. Second operand 25 states. [2020-10-14 00:01:47,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:47,325 INFO L93 Difference]: Finished difference Result 335 states and 376 transitions. [2020-10-14 00:01:47,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 00:01:47,325 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 105 [2020-10-14 00:01:47,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:47,327 INFO L225 Difference]: With dead ends: 335 [2020-10-14 00:01:47,327 INFO L226 Difference]: Without dead ends: 209 [2020-10-14 00:01:47,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:01:47,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-14 00:01:47,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 205. [2020-10-14 00:01:47,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-14 00:01:47,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 225 transitions. [2020-10-14 00:01:47,344 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 225 transitions. Word has length 105 [2020-10-14 00:01:47,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:47,344 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 225 transitions. [2020-10-14 00:01:47,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 00:01:47,345 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 225 transitions. [2020-10-14 00:01:47,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 00:01:47,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:47,346 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:47,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 00:01:47,346 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:47,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:47,347 INFO L82 PathProgramCache]: Analyzing trace with hash -2085234952, now seen corresponding path program 17 times [2020-10-14 00:01:47,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:47,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679627015] [2020-10-14 00:01:47,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:47,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:47,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:47,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:50,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:51,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:51,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:51,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:52,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:52,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 00:01:52,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:01:52,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 00:01:52,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:52,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 00:01:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 00:01:52,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:52,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:52,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:52,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:52,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:52,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:52,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:52,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:52,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:52,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:52,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:52,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:52,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:52,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 00:01:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:52,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:52,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:52,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:52,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:52,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:01:52,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:52,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:52,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:52,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:01:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:52,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:52,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:52,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:52,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:52,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:52,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:52,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:52,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:52,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:52,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:52,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:52,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 00:01:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:52,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:52,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:52,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:52,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:52,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:01:52,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:52,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:52,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 6 proven. 737 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 00:01:52,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679627015] [2020-10-14 00:01:52,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:52,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 00:01:52,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646260881] [2020-10-14 00:01:52,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 00:01:52,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:52,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 00:01:52,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:01:52,772 INFO L87 Difference]: Start difference. First operand 205 states and 225 transitions. Second operand 26 states. [2020-10-14 00:01:53,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:53,347 INFO L93 Difference]: Finished difference Result 348 states and 391 transitions. [2020-10-14 00:01:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 00:01:53,347 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 108 [2020-10-14 00:01:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:53,349 INFO L225 Difference]: With dead ends: 348 [2020-10-14 00:01:53,349 INFO L226 Difference]: Without dead ends: 217 [2020-10-14 00:01:53,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=328, Invalid=374, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:01:53,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-14 00:01:53,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 213. [2020-10-14 00:01:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-14 00:01:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 234 transitions. [2020-10-14 00:01:53,378 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 234 transitions. Word has length 108 [2020-10-14 00:01:53,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:53,378 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 234 transitions. [2020-10-14 00:01:53,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 00:01:53,379 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 234 transitions. [2020-10-14 00:01:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 00:01:53,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:53,380 INFO L422 BasicCegarLoop]: trace histogram [24, 23, 23, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:53,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 00:01:53,380 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:53,380 INFO L82 PathProgramCache]: Analyzing trace with hash 2094415027, now seen corresponding path program 18 times [2020-10-14 00:01:53,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:53,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017071402] [2020-10-14 00:01:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:53,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:53,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:54,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:55,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:56,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:56,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:56,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:58,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:58,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 00:01:58,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:01:58,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:01:58,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:58,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 00:01:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 00:01:58,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:58,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:58,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:58,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:58,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:58,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:58,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:58,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:58,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:58,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:58,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:58,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:01:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:58,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:58,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:58,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:58,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:58,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:01:58,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:58,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:58,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 00:01:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:58,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:58,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:58,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:58,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:58,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:01:58,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:58,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:58,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:58,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:58,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:58,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:58,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:01:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:58,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:58,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:58,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:01:58,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:58,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:01:58,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:58,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:01:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:58,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 6 proven. 805 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 00:01:58,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017071402] [2020-10-14 00:01:58,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:58,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 00:01:58,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168286582] [2020-10-14 00:01:58,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 00:01:58,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:58,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 00:01:58,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:01:58,788 INFO L87 Difference]: Start difference. First operand 213 states and 234 transitions. Second operand 27 states. [2020-10-14 00:01:59,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:59,462 INFO L93 Difference]: Finished difference Result 361 states and 406 transitions. [2020-10-14 00:01:59,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 00:01:59,462 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 111 [2020-10-14 00:01:59,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:59,464 INFO L225 Difference]: With dead ends: 361 [2020-10-14 00:01:59,464 INFO L226 Difference]: Without dead ends: 225 [2020-10-14 00:01:59,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=354, Invalid=402, Unknown=0, NotChecked=0, Total=756 [2020-10-14 00:01:59,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-14 00:01:59,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 221. [2020-10-14 00:01:59,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-14 00:01:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 243 transitions. [2020-10-14 00:01:59,480 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 243 transitions. Word has length 111 [2020-10-14 00:01:59,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:59,481 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 243 transitions. [2020-10-14 00:01:59,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 00:01:59,481 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 243 transitions. [2020-10-14 00:01:59,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 00:01:59,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:59,482 INFO L422 BasicCegarLoop]: trace histogram [25, 24, 24, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:59,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 00:01:59,482 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:59,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:59,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1644906216, now seen corresponding path program 19 times [2020-10-14 00:01:59,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:59,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795647323] [2020-10-14 00:01:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:59,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:59,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:00,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:01,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:01,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:03,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:03,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:04,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 00:02:04,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:02:04,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 00:02:04,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:04,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 00:02:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 00:02:04,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:04,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:04,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:04,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:04,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:04,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:04,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:04,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 00:02:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:04,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:04,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:04,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:04,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:04,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:04,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:04,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:02:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:04,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:04,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:04,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:04,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:04,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:04,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:04,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 00:02:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:04,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:04,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:04,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:04,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:04,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:04,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:04,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:04,985 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 6 proven. 876 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 00:02:04,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795647323] [2020-10-14 00:02:04,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:04,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 00:02:04,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61343639] [2020-10-14 00:02:04,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 00:02:04,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:04,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 00:02:04,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 00:02:04,987 INFO L87 Difference]: Start difference. First operand 221 states and 243 transitions. Second operand 28 states. [2020-10-14 00:02:05,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:05,580 INFO L93 Difference]: Finished difference Result 374 states and 421 transitions. [2020-10-14 00:02:05,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 00:02:05,581 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 114 [2020-10-14 00:02:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:05,583 INFO L225 Difference]: With dead ends: 374 [2020-10-14 00:02:05,583 INFO L226 Difference]: Without dead ends: 233 [2020-10-14 00:02:05,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=381, Invalid=431, Unknown=0, NotChecked=0, Total=812 [2020-10-14 00:02:05,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-14 00:02:05,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2020-10-14 00:02:05,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-14 00:02:05,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 252 transitions. [2020-10-14 00:02:05,607 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 252 transitions. Word has length 114 [2020-10-14 00:02:05,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:05,607 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 252 transitions. [2020-10-14 00:02:05,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 00:02:05,607 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 252 transitions. [2020-10-14 00:02:05,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 00:02:05,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:05,609 INFO L422 BasicCegarLoop]: trace histogram [26, 25, 25, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:05,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 00:02:05,610 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:05,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:05,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1197300077, now seen corresponding path program 20 times [2020-10-14 00:02:05,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:05,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437727760] [2020-10-14 00:02:05,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:05,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:05,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:06,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:08,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:09,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:10,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:10,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:10,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 00:02:10,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:02:10,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:02:10,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:10,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:10,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 00:02:10,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:10,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:02:10,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:11,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:11,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:11,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:11,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:11,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:11,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:11,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:11,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:11,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:11,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:11,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:11,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:11,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:02:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:11,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:11,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:11,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:11,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:11,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:11,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:11,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:11,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:11,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:11,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:11,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:11,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 00:02:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:11,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:11,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:11,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:11,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:11,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:11,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:11,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:11,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:11,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:11,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:11,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:11,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 00:02:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:11,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:11,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:11,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:11,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:11,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:11,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:11,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:11,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:11,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:11,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:11,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 6 proven. 950 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 00:02:11,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437727760] [2020-10-14 00:02:11,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:11,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 00:02:11,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493424228] [2020-10-14 00:02:11,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 00:02:11,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:11,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 00:02:11,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 00:02:11,111 INFO L87 Difference]: Start difference. First operand 229 states and 252 transitions. Second operand 29 states. [2020-10-14 00:02:11,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:11,846 INFO L93 Difference]: Finished difference Result 387 states and 436 transitions. [2020-10-14 00:02:11,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 00:02:11,847 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 117 [2020-10-14 00:02:11,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:11,848 INFO L225 Difference]: With dead ends: 387 [2020-10-14 00:02:11,849 INFO L226 Difference]: Without dead ends: 241 [2020-10-14 00:02:11,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=409, Invalid=461, Unknown=0, NotChecked=0, Total=870 [2020-10-14 00:02:11,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-14 00:02:11,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 237. [2020-10-14 00:02:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-14 00:02:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 261 transitions. [2020-10-14 00:02:11,867 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 261 transitions. Word has length 117 [2020-10-14 00:02:11,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:11,867 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 261 transitions. [2020-10-14 00:02:11,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 00:02:11,867 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 261 transitions. [2020-10-14 00:02:11,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 00:02:11,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:11,868 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:11,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 00:02:11,869 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:11,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:11,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1858700088, now seen corresponding path program 21 times [2020-10-14 00:02:11,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:11,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892380549] [2020-10-14 00:02:11,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:11,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:12,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:12,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:14,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:16,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:16,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:16,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 00:02:16,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:02:16,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 00:02:16,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:16,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 00:02:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:16,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 00:02:16,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:02:17,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:17,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:17,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:17,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:17,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:17,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:02:17,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:17,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:17,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:17,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 00:02:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:17,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:17,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:17,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:17,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:17,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:17,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:02:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:17,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:17,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:17,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:17,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:17,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:17,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:17,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 00:02:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:17,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:17,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:17,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:17,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:17,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:17,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:17,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:17,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:17,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:17,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:17,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 6 proven. 1027 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 00:02:17,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892380549] [2020-10-14 00:02:17,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:17,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 00:02:17,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649961585] [2020-10-14 00:02:17,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 00:02:17,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:17,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 00:02:17,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 00:02:17,413 INFO L87 Difference]: Start difference. First operand 237 states and 261 transitions. Second operand 30 states. [2020-10-14 00:02:18,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:18,207 INFO L93 Difference]: Finished difference Result 400 states and 451 transitions. [2020-10-14 00:02:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 00:02:18,207 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 120 [2020-10-14 00:02:18,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:18,209 INFO L225 Difference]: With dead ends: 400 [2020-10-14 00:02:18,209 INFO L226 Difference]: Without dead ends: 249 [2020-10-14 00:02:18,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=438, Invalid=492, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:02:18,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-14 00:02:18,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 245. [2020-10-14 00:02:18,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-14 00:02:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 270 transitions. [2020-10-14 00:02:18,226 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 270 transitions. Word has length 120 [2020-10-14 00:02:18,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:18,227 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 270 transitions. [2020-10-14 00:02:18,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 00:02:18,227 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 270 transitions. [2020-10-14 00:02:18,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 00:02:18,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:18,228 INFO L422 BasicCegarLoop]: trace histogram [28, 27, 27, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:18,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 00:02:18,229 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:18,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:18,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1557125005, now seen corresponding path program 22 times [2020-10-14 00:02:18,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:18,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862174295] [2020-10-14 00:02:18,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:18,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:19,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:20,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:20,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:23,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:23,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 00:02:23,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:02:23,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:02:23,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:23,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 00:02:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 00:02:23,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:24,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:24,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:24,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:24,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:24,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:24,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:02:24,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:24,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:24,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:24,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:02:24,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:02:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:24,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:24,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:24,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:24,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:24,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:02:24,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:24,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:02:24,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:24,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 00:02:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:24,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:24,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:24,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:24,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:24,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:24,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:24,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:02:24,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:02:24,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:02:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:24,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:24,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:24,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:24,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:24,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:24,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:24,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:02:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:02:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 6 proven. 303 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-14 00:02:24,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862174295] [2020-10-14 00:02:24,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:24,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:02:24,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405110570] [2020-10-14 00:02:24,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:02:24,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:24,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:02:24,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:02:24,220 INFO L87 Difference]: Start difference. First operand 245 states and 270 transitions. Second operand 15 states. [2020-10-14 00:02:24,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:24,923 INFO L93 Difference]: Finished difference Result 251 states and 275 transitions. [2020-10-14 00:02:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 00:02:24,924 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 123 [2020-10-14 00:02:24,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:24,925 INFO L225 Difference]: With dead ends: 251 [2020-10-14 00:02:24,925 INFO L226 Difference]: Without dead ends: 249 [2020-10-14 00:02:24,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2020-10-14 00:02:24,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-14 00:02:24,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2020-10-14 00:02:24,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-14 00:02:24,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 273 transitions. [2020-10-14 00:02:24,946 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 273 transitions. Word has length 123 [2020-10-14 00:02:24,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:24,946 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 273 transitions. [2020-10-14 00:02:24,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:02:24,947 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 273 transitions. [2020-10-14 00:02:24,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 00:02:24,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:24,948 INFO L422 BasicCegarLoop]: trace histogram [28, 27, 27, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:24,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 00:02:24,948 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:24,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:24,948 INFO L82 PathProgramCache]: Analyzing trace with hash 155768678, now seen corresponding path program 23 times [2020-10-14 00:02:24,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:24,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787635138] [2020-10-14 00:02:24,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:24,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:25,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:25,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:29,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:29,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:29,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:29,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 00:02:29,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:02:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 00:02:29,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:29,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 00:02:29,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:29,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 00:02:29,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:30,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:30,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:30,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:30,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:30,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:30,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:30,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:30,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:30,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:02:30,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:02:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:30,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:30,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:30,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:30,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:30,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:30,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:30,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:30,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:30,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:30,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:30,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:02:30,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 00:02:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:30,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:30,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:30,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:30,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:30,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:30,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:30,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:30,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:30,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:30,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:02:30,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:02:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:30,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:30,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:30,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:30,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:30,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:30,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:30,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:02:30,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 00:02:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:30,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:30,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:30,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:30,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:30,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:30,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:30,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:30,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:30,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:30,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:30,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:02:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 8 proven. 1107 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-14 00:02:30,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787635138] [2020-10-14 00:02:30,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:30,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 00:02:30,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113372468] [2020-10-14 00:02:30,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 00:02:30,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:30,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 00:02:30,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:02:30,728 INFO L87 Difference]: Start difference. First operand 249 states and 273 transitions. Second operand 31 states. [2020-10-14 00:02:31,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:31,538 INFO L93 Difference]: Finished difference Result 421 states and 472 transitions. [2020-10-14 00:02:31,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 00:02:31,539 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 132 [2020-10-14 00:02:31,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:31,540 INFO L225 Difference]: With dead ends: 421 [2020-10-14 00:02:31,541 INFO L226 Difference]: Without dead ends: 261 [2020-10-14 00:02:31,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=468, Invalid=524, Unknown=0, NotChecked=0, Total=992 [2020-10-14 00:02:31,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-14 00:02:31,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 257. [2020-10-14 00:02:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-14 00:02:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 282 transitions. [2020-10-14 00:02:31,560 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 282 transitions. Word has length 132 [2020-10-14 00:02:31,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:31,561 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 282 transitions. [2020-10-14 00:02:31,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 00:02:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 282 transitions. [2020-10-14 00:02:31,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 00:02:31,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:31,563 INFO L422 BasicCegarLoop]: trace histogram [29, 28, 28, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:31,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 00:02:31,563 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:31,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:31,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1074953249, now seen corresponding path program 24 times [2020-10-14 00:02:31,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:31,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935991680] [2020-10-14 00:02:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:31,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:31,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:32,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:34,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:36,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:36,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 00:02:36,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:02:36,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 00:02:36,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:36,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:36,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 00:02:36,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 00:02:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:37,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:37,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:37,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:37,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:37,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:37,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:37,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:37,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:37,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:37,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:37,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 00:02:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:37,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:37,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:37,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:37,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:37,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:37,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:37,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:37,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:37,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 00:02:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:37,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:37,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:37,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:37,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:37,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:37,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:37,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:37,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:37,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 00:02:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:37,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:37,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:37,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:37,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:37,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:37,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:37,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:37,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:37,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:37,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:37,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 00:02:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:37,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:37,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:37,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:37,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:37,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:37,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:37,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:37,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:37,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 8 proven. 1190 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-14 00:02:37,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935991680] [2020-10-14 00:02:37,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:37,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 00:02:37,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103830665] [2020-10-14 00:02:37,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 00:02:37,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:37,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 00:02:37,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 00:02:37,225 INFO L87 Difference]: Start difference. First operand 257 states and 282 transitions. Second operand 32 states. [2020-10-14 00:02:38,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:38,001 INFO L93 Difference]: Finished difference Result 434 states and 487 transitions. [2020-10-14 00:02:38,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 00:02:38,002 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 135 [2020-10-14 00:02:38,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:38,006 INFO L225 Difference]: With dead ends: 434 [2020-10-14 00:02:38,006 INFO L226 Difference]: Without dead ends: 269 [2020-10-14 00:02:38,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=499, Invalid=557, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 00:02:38,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-14 00:02:38,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 265. [2020-10-14 00:02:38,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-14 00:02:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 291 transitions. [2020-10-14 00:02:38,028 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 291 transitions. Word has length 135 [2020-10-14 00:02:38,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:38,028 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 291 transitions. [2020-10-14 00:02:38,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 00:02:38,028 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 291 transitions. [2020-10-14 00:02:38,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 00:02:38,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:38,029 INFO L422 BasicCegarLoop]: trace histogram [30, 29, 29, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:38,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 00:02:38,030 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:38,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:38,030 INFO L82 PathProgramCache]: Analyzing trace with hash -208971386, now seen corresponding path program 25 times [2020-10-14 00:02:38,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:38,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169414576] [2020-10-14 00:02:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:38,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:38,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:39,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:40,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:40,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:43,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:43,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 00:02:43,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:02:43,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 00:02:43,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:43,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 00:02:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 00:02:43,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:43,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:43,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:43,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:43,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:43,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:43,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:43,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:43,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:43,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:43,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:02:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:43,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:43,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:43,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:43,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:43,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:43,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:43,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:43,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:43,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 00:02:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:43,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:43,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:43,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:43,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:43,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:43,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:43,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:43,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:43,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-14 00:02:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:43,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:43,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:43,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:43,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:43,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:43,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:43,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:43,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:43,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:43,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:43,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:43,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 00:02:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:43,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:43,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:43,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:43,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:43,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:43,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:43,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:43,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 8 proven. 1276 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-14 00:02:43,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169414576] [2020-10-14 00:02:43,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:43,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 00:02:43,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815286775] [2020-10-14 00:02:43,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 00:02:43,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:43,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 00:02:43,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 00:02:43,639 INFO L87 Difference]: Start difference. First operand 265 states and 291 transitions. Second operand 33 states. [2020-10-14 00:02:44,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:44,365 INFO L93 Difference]: Finished difference Result 447 states and 502 transitions. [2020-10-14 00:02:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 00:02:44,366 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 138 [2020-10-14 00:02:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:44,368 INFO L225 Difference]: With dead ends: 447 [2020-10-14 00:02:44,368 INFO L226 Difference]: Without dead ends: 277 [2020-10-14 00:02:44,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 00:02:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-14 00:02:44,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 273. [2020-10-14 00:02:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-14 00:02:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 300 transitions. [2020-10-14 00:02:44,388 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 300 transitions. Word has length 138 [2020-10-14 00:02:44,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:44,389 INFO L479 AbstractCegarLoop]: Abstraction has 273 states and 300 transitions. [2020-10-14 00:02:44,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 00:02:44,389 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 300 transitions. [2020-10-14 00:02:44,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 00:02:44,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:44,390 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:44,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 00:02:44,391 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:44,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:44,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1370965505, now seen corresponding path program 26 times [2020-10-14 00:02:44,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:44,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763013056] [2020-10-14 00:02:44,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:44,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:44,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:45,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:47,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:49,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:49,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 00:02:49,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:02:49,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 00:02:49,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:49,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:49,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 00:02:49,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:49,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 00:02:49,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:50,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:50,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:50,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:50,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:50,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:50,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:50,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:50,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:50,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:50,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:50,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:50,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:50,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 00:02:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:50,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:50,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:50,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:50,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:50,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:50,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:50,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:50,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:50,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:02:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:50,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:50,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:50,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:50,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:50,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:50,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:50,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:02:50,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 00:02:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:50,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:50,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:50,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:50,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:50,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:50,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:50,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:50,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:50,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-14 00:02:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:50,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:50,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:50,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:50,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:50,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:02:50,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:50,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:02:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:50,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:50,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 8 proven. 1365 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-14 00:02:50,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763013056] [2020-10-14 00:02:50,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:50,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 00:02:50,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167558302] [2020-10-14 00:02:50,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 00:02:50,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:50,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 00:02:50,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 00:02:50,075 INFO L87 Difference]: Start difference. First operand 273 states and 300 transitions. Second operand 34 states. [2020-10-14 00:02:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:51,071 INFO L93 Difference]: Finished difference Result 460 states and 517 transitions. [2020-10-14 00:02:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 00:02:51,072 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 141 [2020-10-14 00:02:51,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:51,074 INFO L225 Difference]: With dead ends: 460 [2020-10-14 00:02:51,075 INFO L226 Difference]: Without dead ends: 285 [2020-10-14 00:02:51,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=564, Invalid=626, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 00:02:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-14 00:02:51,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 281. [2020-10-14 00:02:51,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-14 00:02:51,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 309 transitions. [2020-10-14 00:02:51,107 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 309 transitions. Word has length 141 [2020-10-14 00:02:51,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:51,107 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 309 transitions. [2020-10-14 00:02:51,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 00:02:51,108 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 309 transitions. [2020-10-14 00:02:51,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 00:02:51,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:51,118 INFO L422 BasicCegarLoop]: trace histogram [32, 31, 31, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:51,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 00:02:51,119 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:51,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:51,119 INFO L82 PathProgramCache]: Analyzing trace with hash 724288422, now seen corresponding path program 27 times [2020-10-14 00:02:51,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:51,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138708262] [2020-10-14 00:02:51,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:51,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:53,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:53,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:55,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:56,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:56,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 00:02:56,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:02:56,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 00:02:56,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:56,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:56,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 00:02:56,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:56,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 00:02:56,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:57,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:57,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:57,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:57,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:57,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:57,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:57,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:57,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:57,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:57,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:57,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:57,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:57,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 00:02:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:57,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:57,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:57,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:57,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:57,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:57,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:57,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:57,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:57,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:57,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:02:57,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:57,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 00:02:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:57,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:57,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:57,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:57,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:57,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:57,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:57,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:57,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:02:57,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:57,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 00:02:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:57,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:57,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:57,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:57,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:57,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:57,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:57,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:02:57,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:57,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 00:02:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:57,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:57,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:57,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:02:57,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:57,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:57,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:57,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:57,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:02:57,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 8 proven. 446 refuted. 0 times theorem prover too weak. 1077 trivial. 0 not checked. [2020-10-14 00:02:57,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138708262] [2020-10-14 00:02:57,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:57,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 00:02:57,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021740286] [2020-10-14 00:02:57,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 00:02:57,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:57,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 00:02:57,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:02:57,254 INFO L87 Difference]: Start difference. First operand 281 states and 309 transitions. Second operand 17 states. [2020-10-14 00:02:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:58,137 INFO L93 Difference]: Finished difference Result 287 states and 314 transitions. [2020-10-14 00:02:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 00:02:58,138 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 144 [2020-10-14 00:02:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:58,141 INFO L225 Difference]: With dead ends: 287 [2020-10-14 00:02:58,141 INFO L226 Difference]: Without dead ends: 285 [2020-10-14 00:02:58,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2020-10-14 00:02:58,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-14 00:02:58,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2020-10-14 00:02:58,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-10-14 00:02:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 312 transitions. [2020-10-14 00:02:58,162 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 312 transitions. Word has length 144 [2020-10-14 00:02:58,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:58,162 INFO L479 AbstractCegarLoop]: Abstraction has 285 states and 312 transitions. [2020-10-14 00:02:58,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 00:02:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 312 transitions. [2020-10-14 00:02:58,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 00:02:58,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:58,164 INFO L422 BasicCegarLoop]: trace histogram [32, 31, 31, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:58,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 00:02:58,164 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:58,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:58,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1842161043, now seen corresponding path program 28 times [2020-10-14 00:02:58,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:58,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492061331] [2020-10-14 00:02:58,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:58,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:58,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:59,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:00,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:01,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:03,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:03,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 00:03:03,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:03:03,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 00:03:03,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:03,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 00:03:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:03:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 00:03:03,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:03,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:03:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:03,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:03,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:03,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:03:03,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:03,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:03:03,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:03,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:03,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 00:03:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:03,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:03,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:03,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:03:03,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:03,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:03:03,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:03,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:03:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:03,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:03,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 00:03:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:03,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:03,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:03,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:03:03,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:03,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:03:03,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:03,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:03:03,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:03,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:03,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 00:03:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:03,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:03,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:03,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:03:03,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:03,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:03:03,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:03,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:03:03,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:03,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:03,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 00:03:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:03,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:03,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:03,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:03:03,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:03,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:03:03,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:03,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:03:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:03,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:03,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-14 00:03:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:03,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:03,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:03,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:03:03,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:03,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:03:03,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:03,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:03:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:03,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 10 proven. 1457 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-14 00:03:03,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492061331] [2020-10-14 00:03:03,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:03:03,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 00:03:03,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238968440] [2020-10-14 00:03:03,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 00:03:03,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:03:03,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 00:03:03,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 00:03:03,882 INFO L87 Difference]: Start difference. First operand 285 states and 312 transitions. Second operand 35 states. [2020-10-14 00:03:04,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:03:04,852 INFO L93 Difference]: Finished difference Result 481 states and 538 transitions. [2020-10-14 00:03:04,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 00:03:04,853 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 153 [2020-10-14 00:03:04,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:03:04,855 INFO L225 Difference]: With dead ends: 481 [2020-10-14 00:03:04,855 INFO L226 Difference]: Without dead ends: 297 [2020-10-14 00:03:04,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=598, Invalid=662, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 00:03:04,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-14 00:03:04,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 293. [2020-10-14 00:03:04,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-14 00:03:04,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 321 transitions. [2020-10-14 00:03:04,889 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 321 transitions. Word has length 153 [2020-10-14 00:03:04,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:03:04,890 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 321 transitions. [2020-10-14 00:03:04,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 00:03:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 321 transitions. [2020-10-14 00:03:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 00:03:04,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:04,892 INFO L422 BasicCegarLoop]: trace histogram [33, 32, 32, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:03:04,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 00:03:04,893 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:04,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:04,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1843483576, now seen corresponding path program 29 times [2020-10-14 00:03:04,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:04,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703208390] [2020-10-14 00:03:04,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:04,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:05,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:06,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:07,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:09,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:09,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 00:03:09,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:03:09,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 00:03:09,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:09,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:09,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 00:03:09,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:03:09,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 00:03:09,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:10,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:03:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:10,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:10,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:10,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:03:10,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:10,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:03:10,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:10,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:10,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:10,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 00:03:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:10,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:10,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:10,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:03:10,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:10,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:03:10,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:10,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:03:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:10,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:10,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-14 00:03:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:10,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:10,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:10,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:03:10,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:10,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:03:10,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:10,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:10,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:10,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:03:10,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:10,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:10,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 00:03:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:10,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:10,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:10,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:03:10,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:10,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:03:10,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:10,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:03:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:10,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:10,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 00:03:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:10,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:10,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:10,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:03:10,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:10,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:03:10,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:10,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:03:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:10,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:10,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 00:03:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:10,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:10,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:10,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:03:10,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:10,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:03:10,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:10,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:03:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:10,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 10 proven. 1552 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-14 00:03:10,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703208390] [2020-10-14 00:03:10,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:03:10,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 00:03:10,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552186190] [2020-10-14 00:03:10,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 00:03:10,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:03:10,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 00:03:10,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 00:03:10,624 INFO L87 Difference]: Start difference. First operand 293 states and 321 transitions. Second operand 36 states. [2020-10-14 00:03:11,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:03:11,630 INFO L93 Difference]: Finished difference Result 494 states and 553 transitions. [2020-10-14 00:03:11,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 00:03:11,631 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 156 [2020-10-14 00:03:11,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:03:11,633 INFO L225 Difference]: With dead ends: 494 [2020-10-14 00:03:11,634 INFO L226 Difference]: Without dead ends: 305 [2020-10-14 00:03:11,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=633, Invalid=699, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 00:03:11,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-10-14 00:03:11,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 301. [2020-10-14 00:03:11,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-14 00:03:11,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 330 transitions. [2020-10-14 00:03:11,655 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 330 transitions. Word has length 156 [2020-10-14 00:03:11,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:03:11,656 INFO L479 AbstractCegarLoop]: Abstraction has 301 states and 330 transitions. [2020-10-14 00:03:11,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 00:03:11,656 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 330 transitions. [2020-10-14 00:03:11,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 00:03:11,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:11,657 INFO L422 BasicCegarLoop]: trace histogram [34, 33, 33, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:03:11,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 00:03:11,658 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:11,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:11,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1706608781, now seen corresponding path program 30 times [2020-10-14 00:03:11,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:11,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876655118] [2020-10-14 00:03:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:11,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:12,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:12,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:13,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:14,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:15,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:16,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking...