/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-tiling/rewnif.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:09:26,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:09:26,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:09:26,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:09:26,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:09:26,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:09:26,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:09:26,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:09:26,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:09:26,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:09:26,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:09:26,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:09:26,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:09:26,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:09:26,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:09:26,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:09:26,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:09:26,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:09:26,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:09:26,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:09:26,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:09:26,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:09:26,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:09:26,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:09:26,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:09:26,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:09:26,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:09:26,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:09:26,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:09:26,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:09:26,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:09:26,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:09:26,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:09:26,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:09:26,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:09:26,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:09:26,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:09:26,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:09:26,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:09:26,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:09:26,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:09:26,286 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 [2020-10-14 00:09:26,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:09:26,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:09:26,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:09:26,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:09:26,326 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:09:26,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:09:26,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:09:26,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:09:26,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:09:26,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:09:26,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:09:26,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:09:26,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:09:26,329 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:09:26,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:09:26,329 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:09:26,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:09:26,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:09:26,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:09:26,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:09:26,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:09:26,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:09:26,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:09:26,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:09:26,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:09:26,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:09:26,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:09:26,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:09:26,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:09:26,332 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; [2020-10-14 00:09:26,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:09:26,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:09:26,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:09:26,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:09:26,687 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:09:26,688 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewnif.c [2020-10-14 00:09:26,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/674cc6885/035c082e17c044f3a7a63e7f80c84e95/FLAG549521894 [2020-10-14 00:09:27,165 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:09:27,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/rewnif.c [2020-10-14 00:09:27,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/674cc6885/035c082e17c044f3a7a63e7f80c84e95/FLAG549521894 [2020-10-14 00:09:27,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/674cc6885/035c082e17c044f3a7a63e7f80c84e95 [2020-10-14 00:09:27,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:09:27,604 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:09:27,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:09:27,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:09:27,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:09:27,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:09:27" (1/1) ... [2020-10-14 00:09:27,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@168f32fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:27, skipping insertion in model container [2020-10-14 00:09:27,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:09:27" (1/1) ... [2020-10-14 00:09:27,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:09:27,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:09:27,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:09:27,895 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:09:27,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:09:27,941 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:09:27,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:27 WrapperNode [2020-10-14 00:09:27,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:09:27,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:09:27,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:09:27,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:09:28,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:27" (1/1) ... [2020-10-14 00:09:28,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:27" (1/1) ... [2020-10-14 00:09:28,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:27" (1/1) ... [2020-10-14 00:09:28,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:27" (1/1) ... [2020-10-14 00:09:28,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:27" (1/1) ... [2020-10-14 00:09:28,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:27" (1/1) ... [2020-10-14 00:09:28,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:27" (1/1) ... [2020-10-14 00:09:28,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:09:28,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:09:28,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:09:28,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:09:28,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:27" (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 00:09:28,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:09:28,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:09:28,148 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 00:09:28,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:09:28,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:09:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:09:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 00:09:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 00:09:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:09:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:09:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 00:09:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:09:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 00:09:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 00:09:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 00:09:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:09:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:09:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 00:09:28,385 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:09:28,385 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 00:09:28,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:09:28 BoogieIcfgContainer [2020-10-14 00:09:28,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:09:28,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:09:28,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:09:28,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:09:28,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:09:27" (1/3) ... [2020-10-14 00:09:28,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbc5d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:09:28, skipping insertion in model container [2020-10-14 00:09:28,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:09:27" (2/3) ... [2020-10-14 00:09:28,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbc5d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:09:28, skipping insertion in model container [2020-10-14 00:09:28,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:09:28" (3/3) ... [2020-10-14 00:09:28,397 INFO L109 eAbstractionObserver]: Analyzing ICFG rewnif.c [2020-10-14 00:09:28,408 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:09:28,415 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:09:28,429 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:09:28,454 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:09:28,454 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:09:28,454 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:09:28,455 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:09:28,455 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:09:28,455 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:09:28,455 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:09:28,455 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:09:28,475 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-14 00:09:28,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 00:09:28,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:28,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:28,482 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:28,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:28,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1564765221, now seen corresponding path program 1 times [2020-10-14 00:09:28,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:28,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636474798] [2020-10-14 00:09:28,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:28,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:28,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:28,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:09:28,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:28,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 00:09:28,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:28,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:09:28,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 00:09:28,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:28,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:28,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:28,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:28,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:28,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:09:28,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:28,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:28,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 00:09:28,924 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 00:09:28,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636474798] [2020-10-14 00:09:28,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:09:28,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:09:28,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487354465] [2020-10-14 00:09:28,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:09:28,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:28,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:09:28,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:09:28,984 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2020-10-14 00:09:29,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:29,191 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2020-10-14 00:09:29,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:09:29,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 00:09:29,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:29,202 INFO L225 Difference]: With dead ends: 51 [2020-10-14 00:09:29,203 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 00:09:29,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:09:29,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 00:09:29,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-14 00:09:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-14 00:09:29,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-14 00:09:29,262 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2020-10-14 00:09:29,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:29,263 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-14 00:09:29,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:09:29,263 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-14 00:09:29,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 00:09:29,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:29,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:29,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:09:29,266 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:29,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:29,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1138009376, now seen corresponding path program 1 times [2020-10-14 00:09:29,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:29,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378389033] [2020-10-14 00:09:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:29,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:29,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:29,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:29,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:29,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 00:09:29,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:09:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-14 00:09:29,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:29,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:09:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:29,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:29,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:29,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:29,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:29,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:29,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:29,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:09:29,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:29,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:29,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:29,851 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 00:09:29,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378389033] [2020-10-14 00:09:29,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:29,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:09:29,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781764546] [2020-10-14 00:09:29,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:09:29,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:29,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:09:29,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:09:29,855 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 5 states. [2020-10-14 00:09:29,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:29,940 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-14 00:09:29,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:09:29,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-14 00:09:29,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:29,942 INFO L225 Difference]: With dead ends: 38 [2020-10-14 00:09:29,942 INFO L226 Difference]: Without dead ends: 27 [2020-10-14 00:09:29,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:09:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-14 00:09:29,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-14 00:09:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 00:09:29,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-14 00:09:29,950 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 18 [2020-10-14 00:09:29,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:29,951 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-14 00:09:29,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:09:29,951 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-14 00:09:29,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 00:09:29,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:29,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:29,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:09:29,953 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:29,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:29,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1844234969, now seen corresponding path program 1 times [2020-10-14 00:09:29,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:29,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783514201] [2020-10-14 00:09:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:29,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:30,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:30,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 00:09:30,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 00:09:30,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:30,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:09:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:09:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:30,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:30,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:30,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:30,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:30,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:30,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:09:30,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:30,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:30,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:30,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:09:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:09:30,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783514201] [2020-10-14 00:09:30,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:30,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:09:30,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201508549] [2020-10-14 00:09:30,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:09:30,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:30,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:09:30,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:09:30,417 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 10 states. [2020-10-14 00:09:30,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:30,698 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-10-14 00:09:30,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:09:30,699 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-14 00:09:30,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:30,702 INFO L225 Difference]: With dead ends: 49 [2020-10-14 00:09:30,703 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 00:09:30,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:09:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 00:09:30,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-10-14 00:09:30,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 00:09:30,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-14 00:09:30,718 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 22 [2020-10-14 00:09:30,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:30,719 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-14 00:09:30,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:09:30,719 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-14 00:09:30,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 00:09:30,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:30,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:30,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:09:30,721 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:30,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:30,722 INFO L82 PathProgramCache]: Analyzing trace with hash 467523796, now seen corresponding path program 2 times [2020-10-14 00:09:30,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:30,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933391583] [2020-10-14 00:09:30,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:30,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:31,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:31,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 00:09:31,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:09:31,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-14 00:09:31,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:31,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:09:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 00:09:31,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:31,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:31,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:31,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:31,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:31,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:31,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:09:31,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:31,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:09:31,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933391583] [2020-10-14 00:09:31,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:31,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:09:31,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793986340] [2020-10-14 00:09:31,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:09:31,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:31,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:09:31,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:09:31,640 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 13 states. [2020-10-14 00:09:31,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:31,967 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2020-10-14 00:09:31,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:09:31,968 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-10-14 00:09:31,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:31,973 INFO L225 Difference]: With dead ends: 70 [2020-10-14 00:09:31,973 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 00:09:31,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:09:31,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 00:09:31,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 45. [2020-10-14 00:09:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 00:09:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-10-14 00:09:31,996 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 26 [2020-10-14 00:09:31,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:31,997 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-10-14 00:09:31,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:09:31,998 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-10-14 00:09:32,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 00:09:32,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:32,001 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:32,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:09:32,002 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:32,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:32,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2097899152, now seen corresponding path program 1 times [2020-10-14 00:09:32,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:32,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599170068] [2020-10-14 00:09:32,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:32,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:32,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:32,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 00:09:32,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:32,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-14 00:09:32,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:32,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:09:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:09:32,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:32,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:32,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:32,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:32,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:32,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:32,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:09:32,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:32,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:32,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 00:09:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:32,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:32,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:32,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:32,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:32,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:09:32,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:32,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:32,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:32,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:09:32,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599170068] [2020-10-14 00:09:32,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:32,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:09:32,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108212506] [2020-10-14 00:09:32,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:09:32,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:32,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:09:32,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:09:32,395 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 11 states. [2020-10-14 00:09:32,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:32,825 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2020-10-14 00:09:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:09:32,825 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-14 00:09:32,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:32,827 INFO L225 Difference]: With dead ends: 71 [2020-10-14 00:09:32,827 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 00:09:32,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:09:32,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 00:09:32,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 53. [2020-10-14 00:09:32,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 00:09:32,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-10-14 00:09:32,838 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 30 [2020-10-14 00:09:32,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:32,838 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-10-14 00:09:32,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:09:32,839 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-10-14 00:09:32,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 00:09:32,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:32,840 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:32,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:09:32,841 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:32,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:32,841 INFO L82 PathProgramCache]: Analyzing trace with hash 777089359, now seen corresponding path program 3 times [2020-10-14 00:09:32,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:32,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260295045] [2020-10-14 00:09:32,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:32,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:32,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:33,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:33,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:33,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 00:09:33,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:09:33,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-10-14 00:09:33,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:33,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:33,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:09:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:09:33,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:33,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:33,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:33,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:33,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:33,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:33,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:09:33,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:33,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:33,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:33,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:09:33,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260295045] [2020-10-14 00:09:33,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:33,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:09:33,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229407144] [2020-10-14 00:09:33,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:09:33,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:33,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:09:33,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:09:33,963 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 14 states. [2020-10-14 00:09:34,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:34,262 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-14 00:09:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:09:34,263 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2020-10-14 00:09:34,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:34,264 INFO L225 Difference]: With dead ends: 63 [2020-10-14 00:09:34,264 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 00:09:34,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:09:34,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 00:09:34,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2020-10-14 00:09:34,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 00:09:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-10-14 00:09:34,275 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 30 [2020-10-14 00:09:34,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:34,275 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-10-14 00:09:34,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:09:34,275 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-10-14 00:09:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 00:09:34,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:34,277 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:34,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:09:34,277 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:34,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:34,278 INFO L82 PathProgramCache]: Analyzing trace with hash -95790265, now seen corresponding path program 2 times [2020-10-14 00:09:34,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:34,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130206556] [2020-10-14 00:09:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:34,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:34,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:34,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:34,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:35,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:35,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 00:09:35,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:09:35,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 768 [2020-10-14 00:09:35,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:35,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:09:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 00:09:35,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:35,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:35,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:35,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:35,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:35,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:09:35,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:35,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:35,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:35,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:35,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:35,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 00:09:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:35,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:35,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:35,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:35,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:35,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:09:35,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:35,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:35,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:09:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:35,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:35,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:35,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:35,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:35,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:09:35,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:35,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:35,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:35,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:35,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:35,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:09:35,151 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:09:35,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130206556] [2020-10-14 00:09:35,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:35,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:09:35,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225014879] [2020-10-14 00:09:35,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:09:35,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:35,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:09:35,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:09:35,153 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 9 states. [2020-10-14 00:09:35,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:35,434 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2020-10-14 00:09:35,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:09:35,434 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-14 00:09:35,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:35,436 INFO L225 Difference]: With dead ends: 119 [2020-10-14 00:09:35,436 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 00:09:35,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:09:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 00:09:35,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2020-10-14 00:09:35,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 00:09:35,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-14 00:09:35,447 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 38 [2020-10-14 00:09:35,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:35,448 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-14 00:09:35,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:09:35,448 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-14 00:09:35,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 00:09:35,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:35,450 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:35,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:09:35,450 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:35,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:35,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1358247686, now seen corresponding path program 3 times [2020-10-14 00:09:35,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:35,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421442553] [2020-10-14 00:09:35,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:35,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:36,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:36,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 00:09:36,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:09:36,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 796 [2020-10-14 00:09:36,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:36,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:09:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:09:36,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:36,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:36,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:36,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:36,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:36,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:36,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:09:36,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:36,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:36,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:36,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:36,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:36,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:09:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:36,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:36,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:36,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:36,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:36,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:09:36,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:36,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:36,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:09:36,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421442553] [2020-10-14 00:09:36,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:36,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:09:36,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74751214] [2020-10-14 00:09:36,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:09:36,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:36,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:09:36,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:09:36,688 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 15 states. [2020-10-14 00:09:37,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:37,182 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2020-10-14 00:09:37,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 00:09:37,182 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-10-14 00:09:37,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:37,184 INFO L225 Difference]: With dead ends: 89 [2020-10-14 00:09:37,184 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 00:09:37,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:09:37,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 00:09:37,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 69. [2020-10-14 00:09:37,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 00:09:37,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-14 00:09:37,210 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 38 [2020-10-14 00:09:37,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:37,210 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-14 00:09:37,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:09:37,211 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-14 00:09:37,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 00:09:37,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:37,216 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:37,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:09:37,216 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:37,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:37,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1561203522, now seen corresponding path program 4 times [2020-10-14 00:09:37,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:37,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618138015] [2020-10-14 00:09:37,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:37,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:37,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:37,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:38,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:38,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 00:09:38,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:09:38,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 975 [2020-10-14 00:09:38,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:38,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:09:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 00:09:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:38,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:38,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:38,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:38,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:38,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:38,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:09:38,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:38,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:38,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:38,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:38,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 00:09:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:38,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:38,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:38,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:38,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:38,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:09:38,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:38,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:38,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:38,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:38,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:38,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:09:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:38,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:38,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:38,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:38,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:38,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:09:38,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:38,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:38,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:38,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:38,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:38,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:09:38,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618138015] [2020-10-14 00:09:38,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:38,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:09:38,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571217146] [2020-10-14 00:09:38,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:09:38,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:38,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:09:38,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:09:38,377 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-14 00:09:38,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:38,875 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-10-14 00:09:38,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 00:09:38,875 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-14 00:09:38,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:38,877 INFO L225 Difference]: With dead ends: 95 [2020-10-14 00:09:38,877 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 00:09:38,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:09:38,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 00:09:38,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2020-10-14 00:09:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 00:09:38,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-14 00:09:38,890 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 42 [2020-10-14 00:09:38,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:38,890 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-14 00:09:38,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:09:38,891 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-14 00:09:38,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 00:09:38,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:38,892 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:38,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:09:38,892 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:38,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:38,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1279725823, now seen corresponding path program 5 times [2020-10-14 00:09:38,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:38,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648503754] [2020-10-14 00:09:38,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:38,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:39,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:39,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:39,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:39,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 00:09:39,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:09:39,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-14 00:09:39,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:39,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:09:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:09:39,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:40,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:40,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:40,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:40,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:40,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:40,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:09:40,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:40,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:40,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:40,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:09:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:40,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:40,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:40,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:40,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:40,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:09:40,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:40,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:40,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:09:40,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648503754] [2020-10-14 00:09:40,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:40,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:09:40,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263681870] [2020-10-14 00:09:40,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:09:40,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:40,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:09:40,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:09:40,102 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-14 00:09:40,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:40,462 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2020-10-14 00:09:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 00:09:40,463 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-10-14 00:09:40,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:40,464 INFO L225 Difference]: With dead ends: 89 [2020-10-14 00:09:40,464 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 00:09:40,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:09:40,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 00:09:40,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2020-10-14 00:09:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 00:09:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-14 00:09:40,474 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 42 [2020-10-14 00:09:40,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:40,474 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-14 00:09:40,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:09:40,475 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-14 00:09:40,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 00:09:40,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:40,476 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:40,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:09:40,476 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:40,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:40,477 INFO L82 PathProgramCache]: Analyzing trace with hash -898222599, now seen corresponding path program 6 times [2020-10-14 00:09:40,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:40,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412050847] [2020-10-14 00:09:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:40,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:40,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:40,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:40,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:41,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:41,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:41,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:41,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:42,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:42,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:09:42,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:09:42,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2288 [2020-10-14 00:09:42,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:42,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:42,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:09:42,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:42,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 00:09:42,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:42,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:42,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:42,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:42,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:42,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:42,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:09:42,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:42,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:42,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:42,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 00:09:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:42,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:42,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:42,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:42,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:42,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:09:42,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:42,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:42,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:09:42,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:09:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:42,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:42,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:42,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:42,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:09:42,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:42,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:42,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:09:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:42,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:42,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:42,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:42,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:09:42,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:42,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 00:09:42,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412050847] [2020-10-14 00:09:42,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:42,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:09:42,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925054000] [2020-10-14 00:09:42,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:09:42,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:42,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:09:42,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:09:42,907 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 12 states. [2020-10-14 00:09:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:43,232 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2020-10-14 00:09:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 00:09:43,233 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-14 00:09:43,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:43,234 INFO L225 Difference]: With dead ends: 122 [2020-10-14 00:09:43,234 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 00:09:43,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:09:43,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 00:09:43,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67. [2020-10-14 00:09:43,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 00:09:43,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-10-14 00:09:43,251 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 50 [2020-10-14 00:09:43,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:43,252 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-10-14 00:09:43,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:09:43,252 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-10-14 00:09:43,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 00:09:43,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:43,253 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:43,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:09:43,253 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:43,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:43,254 INFO L82 PathProgramCache]: Analyzing trace with hash 19194552, now seen corresponding path program 7 times [2020-10-14 00:09:43,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:43,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027598054] [2020-10-14 00:09:43,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:43,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:43,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:43,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:44,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:46,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:46,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 00:09:46,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:09:46,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2811 [2020-10-14 00:09:46,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:46,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:46,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 00:09:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 00:09:46,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:46,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:46,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:46,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:46,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:46,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:46,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:09:46,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:46,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:46,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:46,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:46,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:46,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:46,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:09:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:46,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:46,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:46,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:46,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:46,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:09:46,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:46,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:46,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:46,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:09:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:46,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:46,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:46,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:46,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:46,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:09:46,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:46,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:46,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:46,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:46,344 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 00:09:46,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027598054] [2020-10-14 00:09:46,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:46,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 00:09:46,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693580158] [2020-10-14 00:09:46,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 00:09:46,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:46,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 00:09:46,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:09:46,347 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 16 states. [2020-10-14 00:09:46,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:46,940 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2020-10-14 00:09:46,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 00:09:46,941 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2020-10-14 00:09:46,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:46,942 INFO L225 Difference]: With dead ends: 88 [2020-10-14 00:09:46,942 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 00:09:46,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:09:46,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 00:09:46,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 57. [2020-10-14 00:09:46,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 00:09:46,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-10-14 00:09:46,952 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 50 [2020-10-14 00:09:46,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:46,953 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-10-14 00:09:46,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 00:09:46,953 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-10-14 00:09:46,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 00:09:46,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:46,954 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:46,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:09:46,955 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:46,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:46,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1529426572, now seen corresponding path program 8 times [2020-10-14 00:09:46,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:46,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334508969] [2020-10-14 00:09:46,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:46,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:47,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:47,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:47,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:47,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:48,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:49,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:49,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 00:09:49,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:09:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2915 [2020-10-14 00:09:49,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:49,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:09:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 00:09:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:50,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:50,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:50,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:50,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:50,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:50,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:09:50,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:50,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:50,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:50,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:50,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:50,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:09:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:50,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:50,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:50,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:50,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:50,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:09:50,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:50,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:50,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:50,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:09:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:50,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:50,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:50,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:50,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:50,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:09:50,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:50,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:50,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:50,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:50,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:50,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:50,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:09:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:50,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:50,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:50,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:50,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:50,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:09:50,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:50,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:50,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:50,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 00:09:50,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334508969] [2020-10-14 00:09:50,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:50,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:09:50,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775638649] [2020-10-14 00:09:50,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:09:50,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:50,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:09:50,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:09:50,196 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 15 states. [2020-10-14 00:09:50,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:50,916 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2020-10-14 00:09:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 00:09:50,916 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-10-14 00:09:50,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:50,918 INFO L225 Difference]: With dead ends: 103 [2020-10-14 00:09:50,918 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 00:09:50,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:09:50,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 00:09:50,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 87. [2020-10-14 00:09:50,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 00:09:50,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2020-10-14 00:09:50,934 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 54 [2020-10-14 00:09:50,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:50,935 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2020-10-14 00:09:50,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:09:50,935 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2020-10-14 00:09:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 00:09:50,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:50,936 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:50,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:09:50,936 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:50,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:50,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2017631787, now seen corresponding path program 9 times [2020-10-14 00:09:50,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:50,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703548021] [2020-10-14 00:09:50,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:50,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:51,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:51,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:51,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:51,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:51,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:52,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:52,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:52,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:52,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:52,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:52,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:53,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:55,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:55,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:09:55,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 00:09:55,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4736 [2020-10-14 00:09:55,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:55,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:09:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 00:09:55,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:55,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:55,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:55,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:55,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:55,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:55,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:09:55,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:55,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:55,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:55,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:55,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:55,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:09:55,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:09:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:55,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:55,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:55,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:55,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:55,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:09:55,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:55,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:55,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:55,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:55,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:55,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:09:55,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:09:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:55,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:55,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:55,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:55,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:55,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:09:55,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:55,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:55,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:09:55,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:09:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:55,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:55,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:55,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:55,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:55,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:09:55,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:55,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:55,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:09:55,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:09:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:55,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:55,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:55,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:55,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:55,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:09:55,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:55,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:55,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:55,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:09:55,832 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 28 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 00:09:55,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703548021] [2020-10-14 00:09:55,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:55,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:09:55,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620894333] [2020-10-14 00:09:55,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:09:55,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:55,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:09:55,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:09:55,835 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand 13 states. [2020-10-14 00:09:56,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:09:56,131 INFO L93 Difference]: Finished difference Result 140 states and 147 transitions. [2020-10-14 00:09:56,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 00:09:56,132 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-14 00:09:56,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:09:56,133 INFO L225 Difference]: With dead ends: 140 [2020-10-14 00:09:56,133 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 00:09:56,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:09:56,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 00:09:56,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2020-10-14 00:09:56,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 00:09:56,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2020-10-14 00:09:56,145 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 62 [2020-10-14 00:09:56,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:09:56,145 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 92 transitions. [2020-10-14 00:09:56,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:09:56,145 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 92 transitions. [2020-10-14 00:09:56,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 00:09:56,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:09:56,146 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:09:56,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:09:56,146 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:09:56,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:09:56,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1164698646, now seen corresponding path program 10 times [2020-10-14 00:09:56,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:09:56,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893936240] [2020-10-14 00:09:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:09:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:56,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:56,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:56,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:57,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:58,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:58,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:58,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:59,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:59,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 00:09:59,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:09:59,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3225 [2020-10-14 00:09:59,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:59,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:09:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:09:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 00:09:59,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:09:59,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:09:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:59,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:59,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:59,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:09:59,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:59,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:09:59,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:59,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:59,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:09:59,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:59,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:09:59,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:09:59,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:09:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:59,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:59,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:59,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:59,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:59,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:09:59,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:59,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:59,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:09:59,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:09:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:59,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:59,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:59,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:59,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:09:59,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:59,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:59,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:09:59,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:09:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:09:59,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:09:59,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:09:59,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:09:59,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:09:59,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:09:59,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:09:59,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:09:59,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:09:59,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:09:59,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:09:59,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:09:59,760 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 9 proven. 79 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 00:09:59,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893936240] [2020-10-14 00:09:59,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:09:59,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:09:59,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729928076] [2020-10-14 00:09:59,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:09:59,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:09:59,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:09:59,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:09:59,763 INFO L87 Difference]: Start difference. First operand 87 states and 92 transitions. Second operand 18 states. [2020-10-14 00:10:00,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:00,544 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2020-10-14 00:10:00,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 00:10:00,545 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 62 [2020-10-14 00:10:00,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:00,546 INFO L225 Difference]: With dead ends: 100 [2020-10-14 00:10:00,546 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 00:10:00,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:10:00,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 00:10:00,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 69. [2020-10-14 00:10:00,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 00:10:00,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2020-10-14 00:10:00,556 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 62 [2020-10-14 00:10:00,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:00,556 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2020-10-14 00:10:00,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:10:00,556 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2020-10-14 00:10:00,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 00:10:00,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:00,557 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:00,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:10:00,557 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:00,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:00,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1536371418, now seen corresponding path program 11 times [2020-10-14 00:10:00,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:00,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137735241] [2020-10-14 00:10:00,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:00,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:00,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:00,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:00,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:01,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:02,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:02,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:02,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:02,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:02,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:02,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:03,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:03,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:05,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:05,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 00:10:05,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 00:10:05,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4526 [2020-10-14 00:10:05,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:05,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 00:10:05,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:05,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 00:10:05,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:05,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:05,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:05,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:05,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:05,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:05,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:05,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:05,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:05,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:10:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:05,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:05,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:05,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:05,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:05,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:05,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:05,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:05,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:05,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:10:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:05,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:05,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:05,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:05,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:05,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:05,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:05,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:05,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:05,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:10:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:05,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:05,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:05,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:05,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:05,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:05,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:05,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:05,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:05,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:05,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:05,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:10:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:05,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:05,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:05,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:05,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:05,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:10:05,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:05,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:05,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:05,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:05,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:05,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 8 proven. 77 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 00:10:05,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137735241] [2020-10-14 00:10:05,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:05,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 00:10:05,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045916772] [2020-10-14 00:10:05,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 00:10:05,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:05,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 00:10:05,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:10:05,370 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 17 states. [2020-10-14 00:10:06,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:06,336 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2020-10-14 00:10:06,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 00:10:06,336 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2020-10-14 00:10:06,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:06,337 INFO L225 Difference]: With dead ends: 119 [2020-10-14 00:10:06,338 INFO L226 Difference]: Without dead ends: 117 [2020-10-14 00:10:06,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2020-10-14 00:10:06,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-14 00:10:06,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2020-10-14 00:10:06,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 00:10:06,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2020-10-14 00:10:06,362 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 66 [2020-10-14 00:10:06,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:06,363 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2020-10-14 00:10:06,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 00:10:06,363 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2020-10-14 00:10:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 00:10:06,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:06,368 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:06,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:10:06,368 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:06,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:06,369 INFO L82 PathProgramCache]: Analyzing trace with hash 2021053405, now seen corresponding path program 12 times [2020-10-14 00:10:06,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:06,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038456953] [2020-10-14 00:10:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:06,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:06,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:06,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:06,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:06,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:07,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:07,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:07,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:07,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:07,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:07,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:08,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:08,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:08,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:08,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:08,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:08,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:08,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:08,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:09,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:09,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:11,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 00:10:11,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 00:10:11,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:10:11,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:11,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:11,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:10:11,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:11,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 00:10:11,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:11,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:11,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:11,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:11,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:11,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:11,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:11,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:11,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:11,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:10:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:11,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:11,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:11,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:11,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:11,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:11,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:11,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:10:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:11,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:11,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:11,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:11,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:11,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:11,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:11,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:11,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:11,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:10:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:11,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:11,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:11,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:11,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:11,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:11,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:11,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:10:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:11,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:11,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:11,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:11,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:11,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:11,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:11,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:11,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:10:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:11,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:11,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:11,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:11,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:11,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:11,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:11,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:11,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:11,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:11,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 45 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 00:10:11,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038456953] [2020-10-14 00:10:11,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:11,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:10:11,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398779912] [2020-10-14 00:10:11,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:10:11,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:11,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:10:11,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:10:11,596 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand 15 states. [2020-10-14 00:10:12,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:12,009 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2020-10-14 00:10:12,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 00:10:12,011 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-14 00:10:12,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:12,012 INFO L225 Difference]: With dead ends: 164 [2020-10-14 00:10:12,012 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 00:10:12,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:10:12,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 00:10:12,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-10-14 00:10:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 00:10:12,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2020-10-14 00:10:12,034 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 74 [2020-10-14 00:10:12,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:12,034 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2020-10-14 00:10:12,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:10:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2020-10-14 00:10:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 00:10:12,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:12,035 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:12,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:10:12,036 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:12,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:12,036 INFO L82 PathProgramCache]: Analyzing trace with hash -485875044, now seen corresponding path program 13 times [2020-10-14 00:10:12,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:12,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906117499] [2020-10-14 00:10:12,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:12,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:12,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:12,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:12,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:12,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:13,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:14,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:14,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:16,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:16,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:16,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:16,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:17,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:17,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:17,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 00:10:17,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 00:10:17,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 00:10:17,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:17,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 00:10:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 00:10:17,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:17,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:17,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:17,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:17,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:17,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:17,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:17,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:17,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:17,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:17,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:17,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:17,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:17,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:10:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:17,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:17,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:17,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:17,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:17,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:17,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:17,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:17,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:17,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:17,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:17,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:10:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:17,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:17,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:17,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:17,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:17,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:17,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:17,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:17,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:17,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:17,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:17,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:17,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:10:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:17,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:17,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:17,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:17,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:17,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:17,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:17,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:17,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:17,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:17,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:17,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:17,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:10:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:17,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:17,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:17,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:17,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:17,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:10:17,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:17,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:17,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 9 proven. 120 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-14 00:10:17,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906117499] [2020-10-14 00:10:17,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:17,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 00:10:17,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270597062] [2020-10-14 00:10:17,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 00:10:17,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:17,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 00:10:17,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:10:17,540 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand 20 states. [2020-10-14 00:10:18,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:18,703 INFO L93 Difference]: Finished difference Result 151 states and 165 transitions. [2020-10-14 00:10:18,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 00:10:18,705 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2020-10-14 00:10:18,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:18,709 INFO L225 Difference]: With dead ends: 151 [2020-10-14 00:10:18,709 INFO L226 Difference]: Without dead ends: 149 [2020-10-14 00:10:18,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 00:10:18,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-14 00:10:18,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 107. [2020-10-14 00:10:18,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 00:10:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 114 transitions. [2020-10-14 00:10:18,742 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 114 transitions. Word has length 74 [2020-10-14 00:10:18,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:18,742 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 114 transitions. [2020-10-14 00:10:18,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 00:10:18,743 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 114 transitions. [2020-10-14 00:10:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 00:10:18,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:18,745 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:18,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:10:18,745 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:18,745 INFO L82 PathProgramCache]: Analyzing trace with hash 863464024, now seen corresponding path program 14 times [2020-10-14 00:10:18,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:18,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747747389] [2020-10-14 00:10:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:18,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:18,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:18,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:19,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:20,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:20,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:20,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:20,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:21,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:21,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:22,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:23,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:23,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 00:10:23,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 00:10:23,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:10:23,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:23,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:23,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:10:23,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:23,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 00:10:23,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:24,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:24,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:24,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:24,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:24,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:24,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:24,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:24,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:24,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:24,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:10:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:24,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:24,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:24,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:24,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:24,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:24,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:24,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:24,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:10:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:24,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:24,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:24,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:24,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:24,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:10:24,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:24,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:24,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:24,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:10:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:24,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:24,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:24,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:24,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:24,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:24,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:24,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:24,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:24,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:10:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:24,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:24,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:24,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:24,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:24,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:24,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:24,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:24,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:24,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:24,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:24,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:24,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:10:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:24,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:24,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:24,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:24,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:24,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:24,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:24,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:24,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:24,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:24,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:24,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 10 proven. 116 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 00:10:24,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747747389] [2020-10-14 00:10:24,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:24,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 00:10:24,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086252178] [2020-10-14 00:10:24,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 00:10:24,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:24,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 00:10:24,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:10:24,220 INFO L87 Difference]: Start difference. First operand 107 states and 114 transitions. Second operand 19 states. [2020-10-14 00:10:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:25,395 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2020-10-14 00:10:25,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 00:10:25,396 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2020-10-14 00:10:25,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:25,397 INFO L225 Difference]: With dead ends: 135 [2020-10-14 00:10:25,397 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 00:10:25,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 00:10:25,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 00:10:25,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 115. [2020-10-14 00:10:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 00:10:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 122 transitions. [2020-10-14 00:10:25,413 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 122 transitions. Word has length 78 [2020-10-14 00:10:25,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:25,414 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 122 transitions. [2020-10-14 00:10:25,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 00:10:25,414 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 122 transitions. [2020-10-14 00:10:25,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 00:10:25,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:25,415 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:25,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:10:25,416 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:25,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:25,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1643464425, now seen corresponding path program 15 times [2020-10-14 00:10:25,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:25,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814539202] [2020-10-14 00:10:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:25,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:25,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:26,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:26,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:26,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:27,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:27,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:27,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:30,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:30,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 00:10:30,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:10:30,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:10:30,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:30,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 00:10:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 00:10:30,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:30,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:30,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:30,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:30,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:30,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:30,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:30,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:30,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:30,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:10:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:30,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:30,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:30,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:30,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:30,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:30,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:30,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:30,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:30,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:10:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:30,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:30,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:30,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:30,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:30,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:30,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:30,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:30,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:30,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:30,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:30,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:30,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:10:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:30,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:30,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:30,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:30,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:30,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:30,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:30,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:30,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:30,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:10:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:30,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:30,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:30,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:30,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:30,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:30,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:30,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 16 proven. 140 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 00:10:30,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814539202] [2020-10-14 00:10:30,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:30,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 00:10:30,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415135867] [2020-10-14 00:10:30,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 00:10:30,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:30,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 00:10:30,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:10:30,904 INFO L87 Difference]: Start difference. First operand 115 states and 122 transitions. Second operand 20 states. [2020-10-14 00:10:31,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:31,897 INFO L93 Difference]: Finished difference Result 128 states and 135 transitions. [2020-10-14 00:10:31,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 00:10:31,898 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 78 [2020-10-14 00:10:31,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:31,900 INFO L225 Difference]: With dead ends: 128 [2020-10-14 00:10:31,900 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 00:10:31,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 00:10:31,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 00:10:31,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 115. [2020-10-14 00:10:31,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 00:10:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 122 transitions. [2020-10-14 00:10:31,916 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 122 transitions. Word has length 78 [2020-10-14 00:10:31,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:31,917 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 122 transitions. [2020-10-14 00:10:31,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 00:10:31,917 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 122 transitions. [2020-10-14 00:10:31,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 00:10:31,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:31,918 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:31,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 00:10:31,919 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:31,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:31,919 INFO L82 PathProgramCache]: Analyzing trace with hash 662312719, now seen corresponding path program 16 times [2020-10-14 00:10:31,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:31,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832347565] [2020-10-14 00:10:31,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:31,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:31,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:32,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:32,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:33,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:33,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:33,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:34,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:34,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:35,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:35,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:35,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:36,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:36,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:36,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:36,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:36,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 00:10:36,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 00:10:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 00:10:36,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:36,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:10:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 00:10:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:37,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:37,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:37,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:37,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:37,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:37,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:37,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:37,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:37,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:37,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:10:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:37,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:37,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:37,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:37,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:37,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:37,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:37,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:37,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:37,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:37,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:37,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:37,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:10:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:37,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:37,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:37,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:37,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:37,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:37,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:37,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:37,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:37,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:37,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:37,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:37,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:10:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:37,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:37,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:37,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:37,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:37,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:37,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:37,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:37,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:37,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:37,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:10:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:37,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:37,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:37,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:37,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:37,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:37,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:37,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:37,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:37,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:10:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:37,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:37,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:37,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:37,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:37,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:37,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:37,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:10:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:37,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:37,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:37,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:37,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:37,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:37,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:37,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:37,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:37,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:37,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:37,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 84 proven. 66 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 00:10:37,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832347565] [2020-10-14 00:10:37,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:37,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:10:37,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720993277] [2020-10-14 00:10:37,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:10:37,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:37,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:10:37,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:10:37,150 INFO L87 Difference]: Start difference. First operand 115 states and 122 transitions. Second operand 18 states. [2020-10-14 00:10:37,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:37,680 INFO L93 Difference]: Finished difference Result 194 states and 204 transitions. [2020-10-14 00:10:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 00:10:37,682 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 86 [2020-10-14 00:10:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:37,683 INFO L225 Difference]: With dead ends: 194 [2020-10-14 00:10:37,683 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 00:10:37,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:10:37,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 00:10:37,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2020-10-14 00:10:37,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 00:10:37,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 121 transitions. [2020-10-14 00:10:37,696 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 121 transitions. Word has length 86 [2020-10-14 00:10:37,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:37,697 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 121 transitions. [2020-10-14 00:10:37,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:10:37,697 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 121 transitions. [2020-10-14 00:10:37,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 00:10:37,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:37,698 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:37,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 00:10:37,699 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:37,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:37,699 INFO L82 PathProgramCache]: Analyzing trace with hash -940689714, now seen corresponding path program 17 times [2020-10-14 00:10:37,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:37,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032537478] [2020-10-14 00:10:37,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:37,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:37,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:38,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:38,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:38,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:39,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:39,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:40,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:42,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:42,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:42,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 00:10:42,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:10:42,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 00:10:42,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:42,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 00:10:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:42,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 00:10:42,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:43,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:43,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:43,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:43,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:43,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:43,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:43,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:43,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:43,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:43,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:43,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:43,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:43,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:10:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:43,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:43,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:43,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:43,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:43,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:43,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:43,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:43,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:43,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:10:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:43,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:43,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:43,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:43,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:43,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:43,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:43,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:43,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:43,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:43,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:43,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:43,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:10:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:43,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:43,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:43,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:43,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:43,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:43,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:43,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:43,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:43,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:10:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:43,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:43,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:43,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:43,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:43,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:43,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:43,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:43,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:43,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:43,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:43,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:43,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:10:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:43,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:43,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:43,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:43,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:43,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:43,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:43,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:43,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 13 proven. 165 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-14 00:10:43,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032537478] [2020-10-14 00:10:43,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:43,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 00:10:43,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924658356] [2020-10-14 00:10:43,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 00:10:43,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:43,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 00:10:43,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:10:43,220 INFO L87 Difference]: Start difference. First operand 115 states and 121 transitions. Second operand 22 states. [2020-10-14 00:10:44,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:44,426 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2020-10-14 00:10:44,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 00:10:44,428 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 86 [2020-10-14 00:10:44,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:44,430 INFO L225 Difference]: With dead ends: 136 [2020-10-14 00:10:44,430 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 00:10:44,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=1319, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 00:10:44,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 00:10:44,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 93. [2020-10-14 00:10:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 00:10:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2020-10-14 00:10:44,442 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 86 [2020-10-14 00:10:44,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:44,443 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2020-10-14 00:10:44,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 00:10:44,443 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2020-10-14 00:10:44,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 00:10:44,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:44,444 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:44,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 00:10:44,444 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:44,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:44,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1052914422, now seen corresponding path program 18 times [2020-10-14 00:10:44,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:44,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780281696] [2020-10-14 00:10:44,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:44,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:44,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:44,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:44,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:45,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:46,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:46,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:46,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:46,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:47,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:47,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:48,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:49,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:49,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 00:10:49,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 00:10:49,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:10:49,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:49,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:49,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 00:10:49,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:49,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 00:10:49,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:49,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:49,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:49,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:49,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:49,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:49,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:49,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:49,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:49,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:49,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:49,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:49,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:49,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:10:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:49,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:49,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:49,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:49,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:49,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:49,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:49,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:49,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:49,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:49,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:49,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:10:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:49,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:49,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:49,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:49,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:49,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:49,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:49,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:49,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:49,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:10:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:49,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:49,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:49,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:49,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:49,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:49,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:49,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:49,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:49,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:10:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:49,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:49,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:49,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:49,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:49,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:49,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:49,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:49,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:49,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:49,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:49,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:10:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:49,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:49,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:49,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:49,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:49,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:49,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:49,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:49,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:49,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:49,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:49,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:49,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:10:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:49,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:49,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:49,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:49,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:49,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:10:49,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:49,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:49,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:49,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:49,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:49,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 12 proven. 163 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 00:10:49,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780281696] [2020-10-14 00:10:49,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:49,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 00:10:49,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944374573] [2020-10-14 00:10:49,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 00:10:49,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:49,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 00:10:49,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:10:49,878 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 21 states. [2020-10-14 00:10:51,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:51,488 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2020-10-14 00:10:51,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 00:10:51,489 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 90 [2020-10-14 00:10:51,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:51,491 INFO L225 Difference]: With dead ends: 151 [2020-10-14 00:10:51,491 INFO L226 Difference]: Without dead ends: 149 [2020-10-14 00:10:51,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=1285, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 00:10:51,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-14 00:10:51,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 135. [2020-10-14 00:10:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 00:10:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 144 transitions. [2020-10-14 00:10:51,511 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 144 transitions. Word has length 90 [2020-10-14 00:10:51,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:51,511 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 144 transitions. [2020-10-14 00:10:51,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 00:10:51,511 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 144 transitions. [2020-10-14 00:10:51,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 00:10:51,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:51,513 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:51,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 00:10:51,513 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:51,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:51,513 INFO L82 PathProgramCache]: Analyzing trace with hash -648828991, now seen corresponding path program 19 times [2020-10-14 00:10:51,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:51,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633318247] [2020-10-14 00:10:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:51,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:51,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:51,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:51,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:52,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:53,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:54,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:55,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:56,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:56,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:56,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:10:56,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 00:10:56,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 00:10:56,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:56,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:10:56,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:56,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 00:10:56,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:10:56,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:56,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:56,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:56,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:56,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:56,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:56,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:56,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:56,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:56,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:56,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:56,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:10:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:56,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:56,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:56,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:56,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:56,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:56,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:56,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:56,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:56,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:56,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:56,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:56,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:10:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:56,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:56,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:56,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:56,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:56,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:56,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:56,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:56,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:56,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:56,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:56,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:56,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:10:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:56,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:56,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:56,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:56,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:56,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:56,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:56,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:56,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:56,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:56,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:56,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:10:56,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:10:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:56,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:56,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:56,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:56,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:56,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:56,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:56,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:56,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:56,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:56,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:56,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:56,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:10:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:56,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:56,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:56,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:56,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:56,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:10:56,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:56,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:56,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:56,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:10:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:56,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:56,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:56,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:56,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:56,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:56,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:56,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:56,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:56,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:10:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:56,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:56,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:56,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:56,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:10:56,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:56,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:56,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 112 proven. 91 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 00:10:56,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633318247] [2020-10-14 00:10:56,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:56,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 00:10:56,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135782646] [2020-10-14 00:10:56,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 00:10:56,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:56,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 00:10:56,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:10:56,877 INFO L87 Difference]: Start difference. First operand 135 states and 144 transitions. Second operand 19 states. [2020-10-14 00:10:57,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:57,581 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2020-10-14 00:10:57,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 00:10:57,582 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 98 [2020-10-14 00:10:57,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:57,584 INFO L225 Difference]: With dead ends: 212 [2020-10-14 00:10:57,584 INFO L226 Difference]: Without dead ends: 141 [2020-10-14 00:10:57,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2020-10-14 00:10:57,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-14 00:10:57,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2020-10-14 00:10:57,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 00:10:57,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 143 transitions. [2020-10-14 00:10:57,619 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 143 transitions. Word has length 98 [2020-10-14 00:10:57,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:57,619 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 143 transitions. [2020-10-14 00:10:57,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 00:10:57,620 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 143 transitions. [2020-10-14 00:10:57,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 00:10:57,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:57,622 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:57,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 00:10:57,627 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:57,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:57,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1371039616, now seen corresponding path program 20 times [2020-10-14 00:10:57,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:57,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705076341] [2020-10-14 00:10:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:57,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:57,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:58,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:58,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:59,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:01,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:02,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:02,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 00:11:02,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:11:02,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 00:11:02,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:02,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:02,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:11:02,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:02,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 00:11:02,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:03,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:03,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:03,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:03,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:03,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:03,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:03,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:03,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:03,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:03,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:03,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:03,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:03,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:11:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:03,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:03,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:03,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:03,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:03,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:03,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:03,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:03,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:03,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:11:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:03,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:03,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:03,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:03,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:03,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:03,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:03,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:03,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:03,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:03,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:03,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:03,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:11:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:03,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:03,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:03,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:03,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:03,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:03,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:03,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:03,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:03,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:03,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:03,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:03,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:11:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:03,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:03,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:03,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:03,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:03,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:03,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:03,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:03,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:03,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:03,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:03,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:03,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:11:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:03,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:03,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:03,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:03,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:03,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:03,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:03,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:03,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:11:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:03,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:03,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:03,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:03,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:03,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:03,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:03,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:03,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:03,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:03,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:03,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 13 proven. 222 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-14 00:11:03,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705076341] [2020-10-14 00:11:03,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:03,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 00:11:03,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555411663] [2020-10-14 00:11:03,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 00:11:03,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:03,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 00:11:03,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:11:03,147 INFO L87 Difference]: Start difference. First operand 135 states and 143 transitions. Second operand 24 states. [2020-10-14 00:11:05,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:05,006 INFO L93 Difference]: Finished difference Result 191 states and 209 transitions. [2020-10-14 00:11:05,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 00:11:05,007 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 98 [2020-10-14 00:11:05,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:05,009 INFO L225 Difference]: With dead ends: 191 [2020-10-14 00:11:05,010 INFO L226 Difference]: Without dead ends: 189 [2020-10-14 00:11:05,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=1643, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 00:11:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-14 00:11:05,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 139. [2020-10-14 00:11:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 00:11:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2020-10-14 00:11:05,028 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 98 [2020-10-14 00:11:05,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:05,029 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2020-10-14 00:11:05,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 00:11:05,029 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2020-10-14 00:11:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 00:11:05,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:05,031 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:05,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 00:11:05,031 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:05,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:05,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1688681788, now seen corresponding path program 21 times [2020-10-14 00:11:05,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:05,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051310377] [2020-10-14 00:11:05,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:05,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:05,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:05,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:05,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:05,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:06,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:07,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:08,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:08,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:10,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:10,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:11:10,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:11:10,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:11:10,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:10,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 00:11:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 00:11:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:10,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:10,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:10,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:10,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:10,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:10,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:10,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:10,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:11:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:10,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:10,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:10,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:10,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:10,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:10,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:10,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:10,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:10,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:11:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:10,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:10,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:10,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:10,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:10,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:11:10,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:10,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:10,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:10,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:10,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:10,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 00:11:10,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:11:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:10,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:10,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:10,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:10,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:10,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:10,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:10,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:10,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:10,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:11:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:10,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:10,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:10,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:10,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:10,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:10,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:10,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:10,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:10,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:10,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:10,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:10,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:11:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:10,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:10,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:10,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:10,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:10,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:10,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:10,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:10,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:10,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:11:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:10,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:10,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:10,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:10,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:10,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:10,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:10,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:10,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:10,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:11:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:10,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:10,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:10,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:10,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:10,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:10,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:10,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:10,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 14 proven. 218 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 00:11:10,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051310377] [2020-10-14 00:11:10,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:10,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 00:11:10,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042779367] [2020-10-14 00:11:10,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 00:11:10,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:10,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 00:11:10,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:11:10,720 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand 23 states. [2020-10-14 00:11:12,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:12,801 INFO L93 Difference]: Finished difference Result 167 states and 179 transitions. [2020-10-14 00:11:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 00:11:12,802 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 102 [2020-10-14 00:11:12,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:12,804 INFO L225 Difference]: With dead ends: 167 [2020-10-14 00:11:12,805 INFO L226 Difference]: Without dead ends: 165 [2020-10-14 00:11:12,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=1667, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 00:11:12,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-14 00:11:12,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 147. [2020-10-14 00:11:12,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 00:11:12,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 156 transitions. [2020-10-14 00:11:12,825 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 156 transitions. Word has length 102 [2020-10-14 00:11:12,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:12,825 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 156 transitions. [2020-10-14 00:11:12,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 00:11:12,826 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 156 transitions. [2020-10-14 00:11:12,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 00:11:12,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:12,827 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:12,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 00:11:12,828 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:12,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:12,828 INFO L82 PathProgramCache]: Analyzing trace with hash 966471163, now seen corresponding path program 22 times [2020-10-14 00:11:12,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:12,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397350047] [2020-10-14 00:11:12,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:12,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:12,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:13,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:14,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:14,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:15,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:15,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:17,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:17,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 00:11:17,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:11:17,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 00:11:17,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:17,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:17,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 00:11:17,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:17,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 00:11:17,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:18,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:18,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:18,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:18,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:18,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:18,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:18,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:18,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:18,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:11:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:18,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:18,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:18,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:18,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:18,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:18,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:18,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:18,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:18,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:11:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:18,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:18,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:18,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:18,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:18,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:18,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:18,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:18,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:18,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:18,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:18,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:18,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:11:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:18,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:18,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:18,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:18,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:18,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:18,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:18,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:18,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:11:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:18,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:18,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:18,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:18,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:18,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:18,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:18,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:18,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:18,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:11:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:18,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:18,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:18,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:18,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:18,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:18,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:18,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:18,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:18,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:11:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:18,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:18,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:18,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:18,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:18,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:18,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:18,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:18,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:18,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:18,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:18,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 13 proven. 259 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-14 00:11:18,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397350047] [2020-10-14 00:11:18,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:18,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 00:11:18,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526048838] [2020-10-14 00:11:18,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 00:11:18,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:18,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 00:11:18,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:11:18,479 INFO L87 Difference]: Start difference. First operand 147 states and 156 transitions. Second operand 25 states. [2020-10-14 00:11:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:20,161 INFO L93 Difference]: Finished difference Result 159 states and 168 transitions. [2020-10-14 00:11:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 00:11:20,162 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 102 [2020-10-14 00:11:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:20,163 INFO L225 Difference]: With dead ends: 159 [2020-10-14 00:11:20,163 INFO L226 Difference]: Without dead ends: 157 [2020-10-14 00:11:20,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 00:11:20,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-14 00:11:20,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 147. [2020-10-14 00:11:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 00:11:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 156 transitions. [2020-10-14 00:11:20,184 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 156 transitions. Word has length 102 [2020-10-14 00:11:20,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:20,185 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 156 transitions. [2020-10-14 00:11:20,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 00:11:20,185 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 156 transitions. [2020-10-14 00:11:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 00:11:20,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:20,187 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:20,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 00:11:20,187 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:20,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:20,188 INFO L82 PathProgramCache]: Analyzing trace with hash -374684173, now seen corresponding path program 23 times [2020-10-14 00:11:20,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:20,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857293104] [2020-10-14 00:11:20,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:20,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:20,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:20,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:21,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:21,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:22,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:22,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:24,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:24,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:24,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:25,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:25,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 00:11:25,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 00:11:25,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:11:25,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:25,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 00:11:25,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:25,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 00:11:25,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:25,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:25,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:25,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:25,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:25,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:25,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:25,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:25,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:25,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:11:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:25,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:25,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:25,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:25,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:25,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:25,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:25,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:25,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:25,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:25,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:25,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:25,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:11:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:25,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:25,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:25,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:25,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:25,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:25,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:25,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:25,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:25,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:11:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:25,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:25,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:25,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:25,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:25,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:25,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:25,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:25,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:25,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:11:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:25,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:25,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:25,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:25,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:25,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:25,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:25,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:25,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:25,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:11:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:25,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:25,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:25,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:25,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:25,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:25,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:25,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:25,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:11:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:25,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:25,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:25,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:25,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:25,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:25,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:25,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:25,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:25,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:25,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:11:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:25,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:25,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:25,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:25,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:25,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:25,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:25,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:25,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:25,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:25,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:25,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:25,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:11:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:25,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:25,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:25,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:25,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:25,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:25,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:25,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:25,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:25,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:25,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:25,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 144 proven. 120 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 00:11:25,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857293104] [2020-10-14 00:11:25,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:25,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 00:11:25,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075228621] [2020-10-14 00:11:25,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 00:11:25,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:25,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 00:11:25,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:11:25,483 INFO L87 Difference]: Start difference. First operand 147 states and 156 transitions. Second operand 21 states. [2020-10-14 00:11:26,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:26,146 INFO L93 Difference]: Finished difference Result 236 states and 247 transitions. [2020-10-14 00:11:26,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 00:11:26,146 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 110 [2020-10-14 00:11:26,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:26,148 INFO L225 Difference]: With dead ends: 236 [2020-10-14 00:11:26,148 INFO L226 Difference]: Without dead ends: 157 [2020-10-14 00:11:26,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:11:26,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-14 00:11:26,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 147. [2020-10-14 00:11:26,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 00:11:26,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2020-10-14 00:11:26,168 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 110 [2020-10-14 00:11:26,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:26,169 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 155 transitions. [2020-10-14 00:11:26,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 00:11:26,169 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 155 transitions. [2020-10-14 00:11:26,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 00:11:26,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:26,171 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:26,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 00:11:26,171 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:26,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:26,171 INFO L82 PathProgramCache]: Analyzing trace with hash -490895438, now seen corresponding path program 24 times [2020-10-14 00:11:26,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:26,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791347155] [2020-10-14 00:11:26,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:26,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:26,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:26,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:27,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:28,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:31,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:31,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 00:11:31,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:11:31,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 00:11:31,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:31,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 00:11:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 00:11:31,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:31,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:31,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:31,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:31,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:31,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:31,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:31,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:31,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:31,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:31,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:31,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:31,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:31,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:11:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:31,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:31,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:31,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:31,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:31,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:31,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:31,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:31,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:31,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:31,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:31,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:31,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:11:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:31,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:31,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:31,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:31,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:31,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:31,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:31,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:31,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:31,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:31,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:31,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:31,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:11:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:31,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:31,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:31,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:31,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:31,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:31,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:31,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:31,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:31,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:11:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:31,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:31,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:31,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:31,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:31,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:31,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:31,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:31,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:31,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:11:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:31,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:31,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:31,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:31,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:31,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:31,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:31,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:31,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:31,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:11:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:31,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:31,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:31,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:31,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:31,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:31,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:31,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:31,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:11:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:31,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:31,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:31,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:31,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:31,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:31,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:31,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:31,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 15 proven. 285 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 00:11:31,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791347155] [2020-10-14 00:11:31,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:31,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 00:11:31,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738555595] [2020-10-14 00:11:31,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 00:11:31,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:31,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 00:11:31,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:11:31,827 INFO L87 Difference]: Start difference. First operand 147 states and 155 transitions. Second operand 26 states. [2020-10-14 00:11:34,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:34,061 INFO L93 Difference]: Finished difference Result 215 states and 234 transitions. [2020-10-14 00:11:34,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 00:11:34,062 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 110 [2020-10-14 00:11:34,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:34,064 INFO L225 Difference]: With dead ends: 215 [2020-10-14 00:11:34,064 INFO L226 Difference]: Without dead ends: 213 [2020-10-14 00:11:34,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=178, Invalid=1984, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 00:11:34,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-14 00:11:34,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 189. [2020-10-14 00:11:34,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 00:11:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 205 transitions. [2020-10-14 00:11:34,088 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 205 transitions. Word has length 110 [2020-10-14 00:11:34,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:34,088 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 205 transitions. [2020-10-14 00:11:34,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 00:11:34,089 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 205 transitions. [2020-10-14 00:11:34,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 00:11:34,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:34,091 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:34,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 00:11:34,091 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:34,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:34,091 INFO L82 PathProgramCache]: Analyzing trace with hash -331678994, now seen corresponding path program 25 times [2020-10-14 00:11:34,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:34,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610607150] [2020-10-14 00:11:34,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:34,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:34,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:34,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:35,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:36,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:36,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:38,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:38,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:39,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:39,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 00:11:39,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:11:39,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 00:11:39,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:39,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:11:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 00:11:39,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:39,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:39,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:39,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:39,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:39,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:39,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:39,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:39,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:39,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:39,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:39,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:11:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:39,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:39,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:39,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:39,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:39,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:39,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:39,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:39,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:39,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:39,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:39,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:39,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:11:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:39,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:39,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:39,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:39,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:39,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:39,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:39,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:39,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:39,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:39,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:39,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:39,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:11:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:39,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:39,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:39,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:39,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:39,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:39,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:39,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:39,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:39,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:39,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:39,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:39,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:11:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:39,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:39,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:39,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:39,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:39,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:39,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:39,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:39,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:39,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:39,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:39,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:11:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:39,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:39,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:39,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:39,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:39,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:39,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:39,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:39,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:39,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:39,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:39,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:39,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:11:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:39,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:39,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:39,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:39,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:39,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:39,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:39,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:39,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:39,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:11:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:39,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:39,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:39,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:39,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:39,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:39,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:39,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:39,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:39,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:39,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:11:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:39,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:39,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:39,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:39,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:39,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:39,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:39,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:39,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:39,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:39,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:39,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:39,683 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 16 proven. 281 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 00:11:39,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610607150] [2020-10-14 00:11:39,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:39,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 00:11:39,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531908009] [2020-10-14 00:11:39,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 00:11:39,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:39,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 00:11:39,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:11:39,686 INFO L87 Difference]: Start difference. First operand 189 states and 205 transitions. Second operand 25 states. [2020-10-14 00:11:42,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:42,024 INFO L93 Difference]: Finished difference Result 215 states and 234 transitions. [2020-10-14 00:11:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 00:11:42,026 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 114 [2020-10-14 00:11:42,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:42,027 INFO L225 Difference]: With dead ends: 215 [2020-10-14 00:11:42,027 INFO L226 Difference]: Without dead ends: 213 [2020-10-14 00:11:42,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=152, Invalid=2010, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 00:11:42,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-14 00:11:42,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 197. [2020-10-14 00:11:42,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-14 00:11:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 213 transitions. [2020-10-14 00:11:42,054 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 213 transitions. Word has length 114 [2020-10-14 00:11:42,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:42,054 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 213 transitions. [2020-10-14 00:11:42,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 00:11:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 213 transitions. [2020-10-14 00:11:42,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 00:11:42,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:42,056 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:42,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 00:11:42,057 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:42,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:42,057 INFO L82 PathProgramCache]: Analyzing trace with hash -447890259, now seen corresponding path program 26 times [2020-10-14 00:11:42,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:42,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362266244] [2020-10-14 00:11:42,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:42,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:42,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:42,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:43,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:46,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:48,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:48,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 00:11:48,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:11:48,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6089 [2020-10-14 00:11:48,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:48,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 00:11:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 00:11:48,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:48,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:48,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:48,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:48,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:48,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:48,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:48,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:48,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:48,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:48,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:11:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:48,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:48,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:48,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:48,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:48,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:48,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:48,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:48,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:48,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:11:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:48,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:48,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:48,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:48,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:48,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:48,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:48,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:48,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:48,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:11:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:48,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:48,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:48,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:48,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:48,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:48,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:48,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:48,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:48,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:48,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:48,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:11:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:48,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:48,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:48,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:48,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:48,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:11:48,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:48,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:48,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:11:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:48,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:48,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:48,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:48,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:48,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:48,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:48,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:48,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:48,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:11:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:48,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:48,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:48,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:48,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:48,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:48,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:48,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:11:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:48,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:48,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:48,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:48,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:48,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:48,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:48,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:48,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:48,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:48,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:48,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 22 proven. 317 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 00:11:48,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362266244] [2020-10-14 00:11:48,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:48,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 00:11:48,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880246018] [2020-10-14 00:11:48,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 00:11:48,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:48,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 00:11:48,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:11:48,936 INFO L87 Difference]: Start difference. First operand 197 states and 213 transitions. Second operand 26 states. [2020-10-14 00:11:50,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:50,879 INFO L93 Difference]: Finished difference Result 209 states and 225 transitions. [2020-10-14 00:11:50,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 00:11:50,880 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 114 [2020-10-14 00:11:50,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:50,882 INFO L225 Difference]: With dead ends: 209 [2020-10-14 00:11:50,882 INFO L226 Difference]: Without dead ends: 207 [2020-10-14 00:11:50,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=190, Invalid=1880, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 00:11:50,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-14 00:11:50,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 197. [2020-10-14 00:11:50,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-14 00:11:50,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 213 transitions. [2020-10-14 00:11:50,907 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 213 transitions. Word has length 114 [2020-10-14 00:11:50,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:50,908 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 213 transitions. [2020-10-14 00:11:50,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 00:11:50,908 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 213 transitions. [2020-10-14 00:11:50,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 00:11:50,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:50,909 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:50,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 00:11:50,910 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:50,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:50,910 INFO L82 PathProgramCache]: Analyzing trace with hash -876170843, now seen corresponding path program 27 times [2020-10-14 00:11:50,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:50,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544928606] [2020-10-14 00:11:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:50,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:50,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:51,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:51,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:52,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:53,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:54,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:55,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:56,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:56,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 00:11:56,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 00:11:56,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5188 [2020-10-14 00:11:56,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:56,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:56,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 00:11:56,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:56,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 00:11:56,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:56,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:56,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:56,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:56,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:11:56,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:56,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:56,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:56,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:56,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:56,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:11:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:56,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:56,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:56,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:56,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:56,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:56,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:56,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:56,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:56,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:11:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:56,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:56,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:56,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:56,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:56,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:56,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:56,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:56,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:56,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:56,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:56,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:56,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:11:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:56,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:56,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:56,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:56,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:56,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:56,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:56,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:56,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:56,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:11:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:56,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:56,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:56,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:56,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:56,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:56,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:56,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:56,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:56,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:56,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:11:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:56,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:56,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:56,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:56,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:56,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:56,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:56,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:56,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:56,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:56,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:56,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:56,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:11:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:56,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:56,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:56,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:56,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:56,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:56,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:56,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:56,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:56,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:11:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:56,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:56,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:56,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:56,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:56,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:56,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:56,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:56,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:56,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:11:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:56,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:56,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:56,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:56,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:56,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:56,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:56,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:11:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:56,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:56,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:56,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:11:56,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:56,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:56,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:56,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:56,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:11:56,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:56,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:11:56,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 180 proven. 153 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 00:11:56,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544928606] [2020-10-14 00:11:56,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:11:56,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 00:11:56,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650840350] [2020-10-14 00:11:56,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 00:11:56,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:56,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 00:11:56,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:11:56,452 INFO L87 Difference]: Start difference. First operand 197 states and 213 transitions. Second operand 23 states. [2020-10-14 00:11:57,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:57,459 INFO L93 Difference]: Finished difference Result 260 states and 272 transitions. [2020-10-14 00:11:57,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 00:11:57,460 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 122 [2020-10-14 00:11:57,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:57,500 INFO L225 Difference]: With dead ends: 260 [2020-10-14 00:11:57,500 INFO L226 Difference]: Without dead ends: 173 [2020-10-14 00:11:57,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=258, Invalid=864, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 00:11:57,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-14 00:11:57,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 163. [2020-10-14 00:11:57,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-14 00:11:57,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 172 transitions. [2020-10-14 00:11:57,540 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 172 transitions. Word has length 122 [2020-10-14 00:11:57,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:57,541 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 172 transitions. [2020-10-14 00:11:57,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 00:11:57,541 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 172 transitions. [2020-10-14 00:11:57,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 00:11:57,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:57,547 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:57,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 00:11:57,548 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:57,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:57,548 INFO L82 PathProgramCache]: Analyzing trace with hash -912833436, now seen corresponding path program 28 times [2020-10-14 00:11:57,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:57,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818888357] [2020-10-14 00:11:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:57,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:57,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:58,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:58,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:01,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:02,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:02,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:02,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 00:12:02,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:12:02,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5269 [2020-10-14 00:12:02,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:02,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:02,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 00:12:02,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:02,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 00:12:02,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:03,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:03,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:03,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:03,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:12:03,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:03,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:03,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:03,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:03,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:03,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:03,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:03,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:03,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:12:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:03,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:03,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:03,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:03,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:03,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:03,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:03,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:03,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:03,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:12:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:03,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:03,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:03,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:03,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:03,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:03,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:03,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:03,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:03,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:03,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:03,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:03,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:12:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:03,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:03,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:03,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:03,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:03,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:03,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:03,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:03,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:12:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:03,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:03,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:03,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:03,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:03,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:03,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:03,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:03,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:03,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:12:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:03,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:03,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:03,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:03,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:03,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:03,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:03,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:03,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:03,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:12:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:03,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:03,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:03,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:03,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:03,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:03,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:03,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:03,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:03,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:03,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:03,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:03,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:12:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:03,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:03,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:03,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:03,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:03,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:03,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:03,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:03,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:12:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:03,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:03,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:03,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:03,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:03,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:03,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:03,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:03,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 19 proven. 354 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 00:12:03,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818888357] [2020-10-14 00:12:03,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:12:03,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 00:12:03,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004266572] [2020-10-14 00:12:03,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 00:12:03,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:03,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 00:12:03,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2020-10-14 00:12:03,596 INFO L87 Difference]: Start difference. First operand 163 states and 172 transitions. Second operand 28 states. [2020-10-14 00:12:05,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:05,935 INFO L93 Difference]: Finished difference Result 184 states and 193 transitions. [2020-10-14 00:12:05,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 00:12:05,937 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 122 [2020-10-14 00:12:05,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:05,939 INFO L225 Difference]: With dead ends: 184 [2020-10-14 00:12:05,939 INFO L226 Difference]: Without dead ends: 182 [2020-10-14 00:12:05,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=203, Invalid=2149, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 00:12:05,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-14 00:12:05,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 129. [2020-10-14 00:12:05,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 00:12:05,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2020-10-14 00:12:05,971 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 122 [2020-10-14 00:12:05,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:05,972 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2020-10-14 00:12:05,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 00:12:05,972 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2020-10-14 00:12:05,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 00:12:05,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:05,973 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:05,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 00:12:05,974 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:05,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:05,975 INFO L82 PathProgramCache]: Analyzing trace with hash -299874784, now seen corresponding path program 29 times [2020-10-14 00:12:05,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:05,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146205240] [2020-10-14 00:12:05,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:06,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:06,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:06,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:07,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:07,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:08,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:08,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:11,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:11,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 00:12:11,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:12:11,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 00:12:11,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:11,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 00:12:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 00:12:11,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:11,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:11,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:11,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:11,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:12:11,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:11,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:11,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:11,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:11,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:12:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:11,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:11,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:11,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:11,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:11,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:11,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:11,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:11,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:12:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:11,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:11,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:11,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:11,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:11,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:11,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:11,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:11,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:11,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:11,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:12:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:11,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:11,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:11,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:11,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:11,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:11,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:11,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:11,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:12:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:11,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:11,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:11,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:11,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:11,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:11,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:11,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:11,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:11,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:11,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:11,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:11,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:12:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:11,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:11,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:11,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:11,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:11,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:11,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:11,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:11,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:12:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:11,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:11,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:11,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:11,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:11,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:11,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:11,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:11,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:11,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:11,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:11,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:11,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:12:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:11,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:11,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:11,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:11,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:11,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:11,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:11,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:11,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:11,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:11,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:11,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:11,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 00:12:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:11,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:11,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:11,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:11,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:11,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:11,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:11,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:11,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:11,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 00:12:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:11,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:11,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:11,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:11,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:11,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:11,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 18 proven. 352 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 00:12:11,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146205240] [2020-10-14 00:12:11,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:12:11,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 00:12:11,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411575153] [2020-10-14 00:12:11,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 00:12:11,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:11,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 00:12:11,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:12:11,715 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 27 states. [2020-10-14 00:12:14,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:14,569 INFO L93 Difference]: Finished difference Result 199 states and 213 transitions. [2020-10-14 00:12:14,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 00:12:14,571 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 126 [2020-10-14 00:12:14,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:14,573 INFO L225 Difference]: With dead ends: 199 [2020-10-14 00:12:14,574 INFO L226 Difference]: Without dead ends: 197 [2020-10-14 00:12:14,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=162, Invalid=2288, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 00:12:14,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-14 00:12:14,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 183. [2020-10-14 00:12:14,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-14 00:12:14,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 195 transitions. [2020-10-14 00:12:14,616 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 195 transitions. Word has length 126 [2020-10-14 00:12:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:14,620 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 195 transitions. [2020-10-14 00:12:14,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 00:12:14,620 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 195 transitions. [2020-10-14 00:12:14,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 00:12:14,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:14,623 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:14,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 00:12:14,623 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:14,624 INFO L82 PathProgramCache]: Analyzing trace with hash 445557463, now seen corresponding path program 30 times [2020-10-14 00:12:14,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:14,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361712900] [2020-10-14 00:12:14,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:14,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:14,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:15,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:15,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:16,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:17,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:18,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:19,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:19,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:19,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 00:12:19,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:12:19,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5274 [2020-10-14 00:12:19,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:19,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:12:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 00:12:19,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:20,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:20,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:20,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:20,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:12:20,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:20,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:20,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:20,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:20,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:20,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:12:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:20,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:20,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:20,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:20,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:20,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:20,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:20,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:20,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:20,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:20,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:20,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:20,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:12:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:20,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:20,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:20,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:20,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:20,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:20,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:20,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:20,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:12:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:20,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:20,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:20,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:20,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:20,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:20,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:20,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:20,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:20,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:12:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:20,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:20,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:20,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:20,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:20,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:20,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:20,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:20,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:20,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:20,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:20,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:12:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:20,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:20,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:20,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:20,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:20,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:20,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:20,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:20,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:20,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:12:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:20,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:20,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:20,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:20,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:20,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:20,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:20,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:20,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:20,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:12:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:20,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:20,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:20,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:20,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:20,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:20,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:20,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:20,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:20,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:20,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:20,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:20,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 00:12:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:20,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:20,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:20,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:20,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:20,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:20,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:20,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:20,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:20,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:20,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:20,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 00:12:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:20,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:20,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:20,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:20,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:20,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:20,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:20,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:20,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:20,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 00:12:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:20,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:20,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:20,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:20,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:20,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:20,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:20,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:20,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:20,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:20,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:20,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:20,296 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 220 proven. 190 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 00:12:20,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361712900] [2020-10-14 00:12:20,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:12:20,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 00:12:20,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490755769] [2020-10-14 00:12:20,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 00:12:20,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:20,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 00:12:20,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:12:20,298 INFO L87 Difference]: Start difference. First operand 183 states and 195 transitions. Second operand 25 states. [2020-10-14 00:12:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:21,215 INFO L93 Difference]: Finished difference Result 284 states and 297 transitions. [2020-10-14 00:12:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 00:12:21,216 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 134 [2020-10-14 00:12:21,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:21,218 INFO L225 Difference]: With dead ends: 284 [2020-10-14 00:12:21,218 INFO L226 Difference]: Without dead ends: 189 [2020-10-14 00:12:21,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=305, Invalid=1027, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 00:12:21,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-14 00:12:21,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2020-10-14 00:12:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-14 00:12:21,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2020-10-14 00:12:21,247 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 134 [2020-10-14 00:12:21,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:21,248 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2020-10-14 00:12:21,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 00:12:21,248 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2020-10-14 00:12:21,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 00:12:21,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:21,249 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:21,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 00:12:21,250 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:21,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:21,250 INFO L82 PathProgramCache]: Analyzing trace with hash -289665386, now seen corresponding path program 31 times [2020-10-14 00:12:21,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:21,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019356720] [2020-10-14 00:12:21,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:21,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:21,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:22,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:24,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:24,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:25,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:26,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:26,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 00:12:26,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:12:26,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 00:12:26,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:26,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 00:12:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 00:12:26,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:12:27,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:27,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:27,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:12:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:12:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:12:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:12:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:12:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:12:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 00:12:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 00:12:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 00:12:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:27,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:27,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:27,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:27,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:27,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:27,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:27,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:27,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:27,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:27,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 19 proven. 435 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-14 00:12:27,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019356720] [2020-10-14 00:12:27,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:12:27,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 00:12:27,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611882404] [2020-10-14 00:12:27,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 00:12:27,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:27,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 00:12:27,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2020-10-14 00:12:27,131 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand 30 states. [2020-10-14 00:12:30,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:30,131 INFO L93 Difference]: Finished difference Result 251 states and 275 transitions. [2020-10-14 00:12:30,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 00:12:30,132 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 134 [2020-10-14 00:12:30,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:30,135 INFO L225 Difference]: With dead ends: 251 [2020-10-14 00:12:30,135 INFO L226 Difference]: Without dead ends: 249 [2020-10-14 00:12:30,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=203, Invalid=2659, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 00:12:30,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-14 00:12:30,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 187. [2020-10-14 00:12:30,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-14 00:12:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 199 transitions. [2020-10-14 00:12:30,165 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 199 transitions. Word has length 134 [2020-10-14 00:12:30,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:30,165 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 199 transitions. [2020-10-14 00:12:30,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 00:12:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 199 transitions. [2020-10-14 00:12:30,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 00:12:30,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:30,167 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:30,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 00:12:30,167 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:30,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:30,168 INFO L82 PathProgramCache]: Analyzing trace with hash -669098286, now seen corresponding path program 32 times [2020-10-14 00:12:30,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:30,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31774504] [2020-10-14 00:12:30,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:30,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:30,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:30,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:35,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:35,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 00:12:35,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:12:35,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 00:12:35,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:35,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:35,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 00:12:35,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:35,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 00:12:35,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:36,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:36,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:36,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:12:36,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:36,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:36,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:36,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:36,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:36,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:36,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:36,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:12:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:36,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:36,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:36,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:36,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:36,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:36,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:36,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:36,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:12:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:36,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:36,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:36,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:36,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:36,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:36,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:36,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:36,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:36,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:12:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:36,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:36,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:36,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:36,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:36,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:12:36,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:36,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:36,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:12:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:36,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:36,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:36,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:36,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:36,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:12:36,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:36,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:36,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:36,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:36,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:12:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:36,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:36,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:36,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:36,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:36,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:12:36,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:36,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:36,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:36,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:12:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:36,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:36,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:36,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:36,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:36,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:36,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:36,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:36,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:36,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:36,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:36,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:12:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:36,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:36,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:36,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:36,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:12:36,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:36,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:36,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:36,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:36,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:12:36,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:12:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:36,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:36,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:36,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:36,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:36,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:12:36,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:36,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:36,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:36,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:12:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:36,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:36,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:36,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:36,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:36,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:12:36,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:36,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:36,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:36,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:36,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:36,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:36,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:12:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:36,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:36,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:36,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:36,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:36,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:12:36,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:36,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:36,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:36,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:36,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:36,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 20 proven. 431 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 00:12:36,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31774504] [2020-10-14 00:12:36,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:12:36,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 00:12:36,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214633561] [2020-10-14 00:12:36,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 00:12:36,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:36,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 00:12:36,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-10-14 00:12:36,208 INFO L87 Difference]: Start difference. First operand 187 states and 199 transitions. Second operand 29 states. [2020-10-14 00:12:39,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:39,426 INFO L93 Difference]: Finished difference Result 205 states and 218 transitions. [2020-10-14 00:12:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 00:12:39,427 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 138 [2020-10-14 00:12:39,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:39,428 INFO L225 Difference]: With dead ends: 205 [2020-10-14 00:12:39,428 INFO L226 Difference]: Without dead ends: 203 [2020-10-14 00:12:39,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=178, Invalid=2792, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 00:12:39,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-14 00:12:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 195. [2020-10-14 00:12:39,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-14 00:12:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 207 transitions. [2020-10-14 00:12:39,452 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 207 transitions. Word has length 138 [2020-10-14 00:12:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:39,452 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 207 transitions. [2020-10-14 00:12:39,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 00:12:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 207 transitions. [2020-10-14 00:12:39,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 00:12:39,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:39,454 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:39,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 00:12:39,454 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:39,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:39,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1404321135, now seen corresponding path program 33 times [2020-10-14 00:12:39,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:39,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748148372] [2020-10-14 00:12:39,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:39,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:39,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:40,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:40,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:43,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:43,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:44,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:44,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 00:12:44,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:12:44,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:12:44,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:44,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:44,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 00:12:44,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:44,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 00:12:44,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:45,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:45,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:45,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:45,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:12:45,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:45,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:45,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:45,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:45,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:45,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:45,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:45,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:45,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:12:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:45,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:45,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:45,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:45,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:45,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:45,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:45,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:45,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:45,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:12:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:45,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:45,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:45,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:45,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:45,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:45,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:45,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:45,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:45,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:45,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:12:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:45,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:45,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:45,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:45,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:45,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:45,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:45,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:45,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:45,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:12:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:45,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:45,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:45,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:45,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:45,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:45,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:45,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:45,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:45,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:12:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:45,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:45,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:45,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:45,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:45,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:45,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:45,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:45,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:45,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:45,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:45,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:45,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:12:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:45,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:45,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:45,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:45,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:45,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:45,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:45,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:45,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:45,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:45,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:45,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:12:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:45,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:45,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:45,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:45,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:45,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:45,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:45,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:45,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:45,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:45,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:45,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:45,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:12:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:45,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:45,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:45,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:45,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:45,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:45,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:45,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:45,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:45,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:12:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:45,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:45,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:45,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:45,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:45,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:45,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:45,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:45,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 19 proven. 484 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-14 00:12:45,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748148372] [2020-10-14 00:12:45,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:12:45,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 00:12:45,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96078771] [2020-10-14 00:12:45,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 00:12:45,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:45,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 00:12:45,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:12:45,393 INFO L87 Difference]: Start difference. First operand 195 states and 207 transitions. Second operand 31 states. [2020-10-14 00:12:48,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:48,179 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2020-10-14 00:12:48,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 00:12:48,180 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 138 [2020-10-14 00:12:48,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:48,181 INFO L225 Difference]: With dead ends: 207 [2020-10-14 00:12:48,181 INFO L226 Difference]: Without dead ends: 205 [2020-10-14 00:12:48,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=2765, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 00:12:48,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-14 00:12:48,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 195. [2020-10-14 00:12:48,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-14 00:12:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 207 transitions. [2020-10-14 00:12:48,211 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 207 transitions. Word has length 138 [2020-10-14 00:12:48,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:48,212 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 207 transitions. [2020-10-14 00:12:48,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 00:12:48,212 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 207 transitions. [2020-10-14 00:12:48,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 00:12:48,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:48,213 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:48,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 00:12:48,214 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:48,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:48,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1467354743, now seen corresponding path program 34 times [2020-10-14 00:12:48,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:48,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528587523] [2020-10-14 00:12:48,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:48,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:48,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:48,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:48,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:49,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:49,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:51,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:51,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:52,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:52,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:53,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:53,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 00:12:53,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 00:12:53,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 00:12:53,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:53,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 00:12:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 00:12:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:53,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:53,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:53,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:53,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:12:53,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:53,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:53,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:53,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:53,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:53,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:53,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:12:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:53,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:53,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:53,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:53,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:53,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:53,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:53,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:53,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:53,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:53,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:53,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:53,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:12:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:53,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:53,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:53,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:53,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:53,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:53,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:53,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:53,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:53,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:12:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:53,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:53,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:53,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:53,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:53,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:53,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:53,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:53,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:53,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:53,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:53,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:53,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:12:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:53,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:53,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:53,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:53,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:53,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:53,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:53,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:53,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:53,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:12:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:53,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:53,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:53,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:53,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:53,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:53,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:53,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:53,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:53,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:53,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:53,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:53,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:12:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:53,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:53,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:53,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:53,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:53,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:53,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:53,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:53,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:53,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:53,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:53,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:53,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:12:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:53,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:53,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:53,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:53,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:53,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:53,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:53,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:53,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:53,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:53,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:12:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:53,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:53,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:53,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:53,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:53,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:53,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:53,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:53,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:53,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:12:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:53,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:53,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:53,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:53,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:53,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:53,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:53,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:53,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:53,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:53,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:12:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:53,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:53,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:53,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:53,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:53,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:53,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:53,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:53,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:53,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:53,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:53,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:53,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 00:12:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:53,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:53,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:53,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:12:53,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:53,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:53,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:53,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:53,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:53,682 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 264 proven. 231 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 00:12:53,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528587523] [2020-10-14 00:12:53,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:12:53,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 00:12:53,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409823155] [2020-10-14 00:12:53,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 00:12:53,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:53,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 00:12:53,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:12:53,683 INFO L87 Difference]: Start difference. First operand 195 states and 207 transitions. Second operand 27 states. [2020-10-14 00:12:54,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:54,671 INFO L93 Difference]: Finished difference Result 308 states and 322 transitions. [2020-10-14 00:12:54,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 00:12:54,672 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 146 [2020-10-14 00:12:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:54,673 INFO L225 Difference]: With dead ends: 308 [2020-10-14 00:12:54,673 INFO L226 Difference]: Without dead ends: 205 [2020-10-14 00:12:54,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=356, Invalid=1204, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 00:12:54,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-14 00:12:54,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 195. [2020-10-14 00:12:54,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-14 00:12:54,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 206 transitions. [2020-10-14 00:12:54,701 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 206 transitions. Word has length 146 [2020-10-14 00:12:54,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:54,702 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 206 transitions. [2020-10-14 00:12:54,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 00:12:54,702 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 206 transitions. [2020-10-14 00:12:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 00:12:54,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:54,704 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:54,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 00:12:54,704 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:54,704 INFO L82 PathProgramCache]: Analyzing trace with hash 364062280, now seen corresponding path program 35 times [2020-10-14 00:12:54,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:54,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449817205] [2020-10-14 00:12:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:54,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:55,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:55,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:56,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:59,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:59,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 00:12:59,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:12:59,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 00:12:59,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:59,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:59,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 00:12:59,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:59,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-14 00:12:59,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:00,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:00,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:00,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:13:00,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:00,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:00,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:00,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:00,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:00,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:13:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:00,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:00,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:00,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:00,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:00,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:00,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:00,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:00,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:00,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:13:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:00,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:00,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:00,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:00,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:00,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:00,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:00,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:00,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:00,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:13:00,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:13:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:00,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:00,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:00,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:00,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:00,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:00,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:00,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:00,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:00,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:00,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:00,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:13:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:00,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:00,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:00,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:00,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:00,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:00,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:00,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:00,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:00,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:00,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:13:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:00,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:00,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:00,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:00,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:00,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:00,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:00,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:00,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:00,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:00,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:13:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:00,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:00,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:00,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:00,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:00,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:00,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:00,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:00,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:00,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:00,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:00,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:13:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:00,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:00,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:00,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:00,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:00,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:00,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:00,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:00,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:13:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:00,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:00,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:00,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:00,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:00,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:00,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:00,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:00,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:13:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:00,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:00,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:00,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:00,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:00,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:00,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:00,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:00,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:00,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:00,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:00,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 00:13:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:00,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:00,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:00,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:00,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:00,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:00,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:00,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:00,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 21 proven. 522 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-14 00:13:00,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449817205] [2020-10-14 00:13:00,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:13:00,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 00:13:00,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537142797] [2020-10-14 00:13:00,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 00:13:00,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:00,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 00:13:00,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=923, Unknown=0, NotChecked=0, Total=992 [2020-10-14 00:13:00,681 INFO L87 Difference]: Start difference. First operand 195 states and 206 transitions. Second operand 32 states. [2020-10-14 00:13:04,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:04,190 INFO L93 Difference]: Finished difference Result 275 states and 300 transitions. [2020-10-14 00:13:04,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 00:13:04,191 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 146 [2020-10-14 00:13:04,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:04,193 INFO L225 Difference]: With dead ends: 275 [2020-10-14 00:13:04,194 INFO L226 Difference]: Without dead ends: 273 [2020-10-14 00:13:04,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=223, Invalid=3199, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 00:13:04,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-14 00:13:04,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 249. [2020-10-14 00:13:04,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-14 00:13:04,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 271 transitions. [2020-10-14 00:13:04,225 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 271 transitions. Word has length 146 [2020-10-14 00:13:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:04,225 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 271 transitions. [2020-10-14 00:13:04,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 00:13:04,226 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 271 transitions. [2020-10-14 00:13:04,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 00:13:04,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:04,227 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:04,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 00:13:04,227 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:04,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:04,228 INFO L82 PathProgramCache]: Analyzing trace with hash -6519548, now seen corresponding path program 36 times [2020-10-14 00:13:04,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:04,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516956823] [2020-10-14 00:13:04,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:04,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:05,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:08,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:08,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:09,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:09,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 00:13:09,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:13:09,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 00:13:09,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:09,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 00:13:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:13:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 00:13:09,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:10,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:10,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:10,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:10,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:13:10,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:10,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:10,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:10,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:10,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:10,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:10,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:10,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:13:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:10,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:10,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:10,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:10,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:10,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:10,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:10,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:10,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:10,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:10,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:10,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:13:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:10,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:10,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:10,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:10,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:10,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:10,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:10,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:10,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:10,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:10,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:10,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:10,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:13:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:10,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:10,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:10,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:10,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:10,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:10,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:10,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:10,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:10,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:10,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:13:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:10,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:10,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:10,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:10,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:10,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:10,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:10,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:10,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:10,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:10,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:10,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:13:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:10,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:10,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:10,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:10,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:10,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:10,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:10,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:10,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:10,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:10,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:10,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 00:13:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:10,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:10,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:10,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:10,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:10,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:10,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:10,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:10,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:10,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:10,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:10,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:10,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 00:13:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:10,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:10,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:10,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:10,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:10,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:10,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:10,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:13:10,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 00:13:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:10,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:10,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:10,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:10,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:10,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:10,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:10,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:10,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:10,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:10,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 00:13:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:10,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:10,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:10,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:10,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:10,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:10,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:10,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:10,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:10,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 00:13:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:10,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:10,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:10,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:10,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:10,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:10,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:10,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:10,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:10,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 00:13:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:10,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:10,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:10,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:13:10,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:10,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:10,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:10,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:10,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:10,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:10,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:10,266 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 22 proven. 518 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 00:13:10,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516956823] [2020-10-14 00:13:10,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:13:10,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 00:13:10,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901630582] [2020-10-14 00:13:10,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 00:13:10,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:10,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 00:13:10,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:13:10,269 INFO L87 Difference]: Start difference. First operand 249 states and 271 transitions. Second operand 31 states. [2020-10-14 00:13:13,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:13,971 INFO L93 Difference]: Finished difference Result 275 states and 300 transitions. [2020-10-14 00:13:13,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 00:13:13,972 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 150 [2020-10-14 00:13:13,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:13,974 INFO L225 Difference]: With dead ends: 275 [2020-10-14 00:13:13,975 INFO L226 Difference]: Without dead ends: 273 [2020-10-14 00:13:13,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=191, Invalid=3231, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 00:13:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-14 00:13:14,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 257. [2020-10-14 00:13:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-14 00:13:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 279 transitions. [2020-10-14 00:13:14,022 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 279 transitions. Word has length 150 [2020-10-14 00:13:14,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:14,024 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 279 transitions. [2020-10-14 00:13:14,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 00:13:14,024 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 279 transitions. [2020-10-14 00:13:14,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 00:13:14,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:14,026 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:13:14,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 00:13:14,027 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:14,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:14,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1824897475, now seen corresponding path program 37 times [2020-10-14 00:13:14,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:14,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010719372] [2020-10-14 00:13:14,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:14,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:14,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking...