/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/mbpr4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:04:08,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:04:08,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:04:08,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:04:08,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:04:08,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:04:08,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:04:08,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:04:08,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:04:08,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:04:08,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:04:08,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:04:08,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:04:08,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:04:08,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:04:08,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:04:08,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:04:08,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:04:08,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:04:08,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:04:08,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:04:08,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:04:08,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:04:08,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:04:08,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:04:08,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:04:08,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:04:08,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:04:08,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:04:08,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:04:08,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:04:08,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:04:08,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:04:08,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:04:08,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:04:08,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:04:08,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:04:08,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:04:08,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:04:08,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:04:08,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:04:08,306 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 00:04:08,328 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:04:08,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:04:08,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:04:08,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:04:08,330 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:04:08,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:04:08,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:04:08,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:04:08,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:04:08,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:04:08,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:04:08,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:04:08,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:04:08,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:04:08,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:04:08,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:04:08,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:04:08,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:04:08,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:04:08,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:04:08,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:04:08,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:04:08,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:04:08,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:04:08,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:04:08,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:04:08,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:04:08,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:04:08,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:04:08,335 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 00:04:08,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:04:08,663 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:04:08,668 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:04:08,669 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:04:08,670 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:04:08,671 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr4.c [2020-10-14 00:04:08,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98b40341c/142d9db4a234432c842a7f83966d29e9/FLAG280d2ad22 [2020-10-14 00:04:09,219 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:04:09,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/mbpr4.c [2020-10-14 00:04:09,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98b40341c/142d9db4a234432c842a7f83966d29e9/FLAG280d2ad22 [2020-10-14 00:04:09,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98b40341c/142d9db4a234432c842a7f83966d29e9 [2020-10-14 00:04:09,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:04:09,592 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:04:09,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:04:09,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:04:09,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:04:09,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:04:09" (1/1) ... [2020-10-14 00:04:09,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e3ee29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:09, skipping insertion in model container [2020-10-14 00:04:09,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:04:09" (1/1) ... [2020-10-14 00:04:09,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:04:09,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:04:09,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:04:09,840 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:04:09,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:04:10,024 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:04:10,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10 WrapperNode [2020-10-14 00:04:10,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:04:10,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:04:10,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:04:10,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:04:10,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (1/1) ... [2020-10-14 00:04:10,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (1/1) ... [2020-10-14 00:04:10,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (1/1) ... [2020-10-14 00:04:10,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (1/1) ... [2020-10-14 00:04:10,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (1/1) ... [2020-10-14 00:04:10,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (1/1) ... [2020-10-14 00:04:10,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (1/1) ... [2020-10-14 00:04:10,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:04:10,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:04:10,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:04:10,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:04:10,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (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 00:04:10,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:04:10,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:04:10,159 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 00:04:10,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:04:10,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:04:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:04:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 00:04:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 00:04:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:04:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:04:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:04:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 00:04:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 00:04:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 00:04:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 00:04:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:04:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:04:10,553 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:04:10,553 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-14 00:04:10,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:04:10 BoogieIcfgContainer [2020-10-14 00:04:10,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:04:10,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:04:10,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:04:10,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:04:10,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:04:09" (1/3) ... [2020-10-14 00:04:10,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635f3f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:04:10, skipping insertion in model container [2020-10-14 00:04:10,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (2/3) ... [2020-10-14 00:04:10,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635f3f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:04:10, skipping insertion in model container [2020-10-14 00:04:10,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:04:10" (3/3) ... [2020-10-14 00:04:10,568 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr4.c [2020-10-14 00:04:10,584 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:04:10,592 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:04:10,610 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:04:10,639 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:04:10,640 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:04:10,640 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:04:10,640 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:04:10,640 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:04:10,641 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:04:10,641 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:04:10,641 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:04:10,667 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-10-14 00:04:10,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 00:04:10,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:10,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:10,676 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:10,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:10,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1166202596, now seen corresponding path program 1 times [2020-10-14 00:04:10,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:10,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679649507] [2020-10-14 00:04:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:10,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:10,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:10,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:11,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 00:04:11,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:04:11,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-14 00:04:11,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:11,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 00:04:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:11,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:04:11,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:11,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:11,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:11,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:11,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:04:11,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:11,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:11,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:11,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:04:11,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:11,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:11,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:11,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:04:11,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:04:11,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:11,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:11,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:11,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 00:04:11,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:11,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:11,902 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 00:04:11,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679649507] [2020-10-14 00:04:11,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:11,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:04:11,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083042347] [2020-10-14 00:04:11,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:04:11,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:11,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:04:11,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:04:11,946 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-10-14 00:04:12,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:12,183 INFO L93 Difference]: Finished difference Result 91 states and 125 transitions. [2020-10-14 00:04:12,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:04:12,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-14 00:04:12,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:12,200 INFO L225 Difference]: With dead ends: 91 [2020-10-14 00:04:12,201 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 00:04:12,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:04:12,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 00:04:12,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-14 00:04:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 00:04:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-14 00:04:12,270 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 28 [2020-10-14 00:04:12,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:12,271 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-14 00:04:12,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:04:12,271 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-14 00:04:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 00:04:12,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:12,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:12,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:04:12,279 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:12,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:12,281 INFO L82 PathProgramCache]: Analyzing trace with hash 489925217, now seen corresponding path program 1 times [2020-10-14 00:04:12,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:12,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642656589] [2020-10-14 00:04:12,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:17,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:17,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 00:04:17,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 00:04:17,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:04:17,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:17,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:17,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:04:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:04:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:04:17,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:17,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:17,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:17,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:17,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:17,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:17,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:04:17,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:17,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:17,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:17,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:17,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:17,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:17,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:17,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:17,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:17,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:17,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:04:17,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:04:17,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:17,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:17,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:17,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:17,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:17,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:04:17,512 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 00:04:17,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642656589] [2020-10-14 00:04:17,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:17,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 00:04:17,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80433450] [2020-10-14 00:04:17,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:04:17,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:17,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:04:17,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:04:17,521 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 7 states. [2020-10-14 00:04:18,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:18,114 INFO L93 Difference]: Finished difference Result 100 states and 129 transitions. [2020-10-14 00:04:18,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:04:18,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-14 00:04:18,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:18,118 INFO L225 Difference]: With dead ends: 100 [2020-10-14 00:04:18,119 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 00:04:18,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:04:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 00:04:18,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 49. [2020-10-14 00:04:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 00:04:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-10-14 00:04:18,151 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 28 [2020-10-14 00:04:18,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:18,152 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-10-14 00:04:18,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:04:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-10-14 00:04:18,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 00:04:18,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:18,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:18,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:04:18,157 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:18,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:18,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1372768523, now seen corresponding path program 1 times [2020-10-14 00:04:18,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:18,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823618933] [2020-10-14 00:04:18,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:18,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:18,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:18,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:18,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:18,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:19,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:19,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:19,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:20,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:20,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:20,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:23,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:23,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 00:04:23,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 00:04:23,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:04:23,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:23,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:04:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:04:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:23,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:23,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:23,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:23,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:23,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:23,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:23,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:23,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:23,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:23,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:23,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:23,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:23,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:23,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:23,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:04:23,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:23,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:23,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:23,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:23,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 00:04:23,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823618933] [2020-10-14 00:04:23,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:23,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:04:23,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354246579] [2020-10-14 00:04:23,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:04:23,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:23,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:04:23,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:04:23,264 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 4 states. [2020-10-14 00:04:23,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:23,391 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2020-10-14 00:04:23,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:04:23,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-14 00:04:23,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:23,393 INFO L225 Difference]: With dead ends: 65 [2020-10-14 00:04:23,394 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 00:04:23,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 00:04:23,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 00:04:23,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-14 00:04:23,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 00:04:23,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-14 00:04:23,404 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 44 [2020-10-14 00:04:23,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:23,405 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-14 00:04:23,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:04:23,405 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-14 00:04:23,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 00:04:23,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:23,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:23,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:04:23,407 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:23,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:23,408 INFO L82 PathProgramCache]: Analyzing trace with hash -671703945, now seen corresponding path program 1 times [2020-10-14 00:04:23,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:23,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025680174] [2020-10-14 00:04:23,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:23,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:23,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:23,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:23,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:24,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:24,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:25,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:25,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:25,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:26,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:26,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:28,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:28,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 00:04:28,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 00:04:28,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 00:04:28,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:28,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:04:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 00:04:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:28,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:28,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:28,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:28,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:28,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:28,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:28,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:28,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:28,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:28,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:28,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:28,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:28,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:28,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:28,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:28,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:04:28,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:28,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:28,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:28,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:04:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:04:28,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025680174] [2020-10-14 00:04:28,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:28,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:04:28,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472912876] [2020-10-14 00:04:28,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:04:28,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:28,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:04:28,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:04:28,508 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 6 states. [2020-10-14 00:04:28,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:28,801 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-10-14 00:04:28,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:04:28,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-14 00:04:28,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:28,804 INFO L225 Difference]: With dead ends: 57 [2020-10-14 00:04:28,804 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 00:04:28,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:04:28,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 00:04:28,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-14 00:04:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 00:04:28,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2020-10-14 00:04:28,827 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 44 [2020-10-14 00:04:28,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:28,829 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2020-10-14 00:04:28,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:04:28,830 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2020-10-14 00:04:28,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 00:04:28,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:28,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:28,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:04:28,837 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:28,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:28,838 INFO L82 PathProgramCache]: Analyzing trace with hash -669856903, now seen corresponding path program 1 times [2020-10-14 00:04:28,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:28,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874555490] [2020-10-14 00:04:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:28,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:29,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:29,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:29,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:30,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:30,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:30,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:32,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:32,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:32,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:32,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:32,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:32,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:33,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:33,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 00:04:33,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 00:04:33,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:04:33,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:33,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:04:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:04:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:04:33,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:34,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:34,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:34,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:34,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:34,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:34,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:34,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:34,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:34,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:34,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:34,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:34,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:34,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:34,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:34,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:34,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:34,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 00:04:34,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874555490] [2020-10-14 00:04:34,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:34,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:04:34,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897338554] [2020-10-14 00:04:34,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:04:34,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:34,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:04:34,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:04:34,134 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 8 states. [2020-10-14 00:04:34,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:34,552 INFO L93 Difference]: Finished difference Result 133 states and 159 transitions. [2020-10-14 00:04:34,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:04:34,553 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-14 00:04:34,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:34,555 INFO L225 Difference]: With dead ends: 133 [2020-10-14 00:04:34,555 INFO L226 Difference]: Without dead ends: 117 [2020-10-14 00:04:34,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:04:34,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-14 00:04:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 79. [2020-10-14 00:04:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 00:04:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2020-10-14 00:04:34,569 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 44 [2020-10-14 00:04:34,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:34,570 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2020-10-14 00:04:34,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:04:34,570 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2020-10-14 00:04:34,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 00:04:34,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:34,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:34,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:04:34,572 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:34,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:34,573 INFO L82 PathProgramCache]: Analyzing trace with hash 716346491, now seen corresponding path program 1 times [2020-10-14 00:04:34,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:34,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628556698] [2020-10-14 00:04:34,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:34,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:34,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:34,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:34,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:34,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:35,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:35,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:35,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:39,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:39,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 00:04:39,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 00:04:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:04:39,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:39,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:39,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:04:39,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:04:39,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:39,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:39,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:39,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:39,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:39,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:39,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:39,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:39,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:39,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:39,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:39,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:39,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:39,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:39,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:39,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:39,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:39,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:04:39,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:39,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:39,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 00:04:39,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628556698] [2020-10-14 00:04:39,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:39,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:04:39,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056462586] [2020-10-14 00:04:39,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:04:39,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:39,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:04:39,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:04:39,638 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand 4 states. [2020-10-14 00:04:39,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:39,744 INFO L93 Difference]: Finished difference Result 95 states and 111 transitions. [2020-10-14 00:04:39,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:04:39,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-14 00:04:39,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:39,747 INFO L225 Difference]: With dead ends: 95 [2020-10-14 00:04:39,748 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 00:04:39,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 00:04:39,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 00:04:39,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-14 00:04:39,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 00:04:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2020-10-14 00:04:39,762 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 44 [2020-10-14 00:04:39,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:39,762 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2020-10-14 00:04:39,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:04:39,762 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2020-10-14 00:04:39,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 00:04:39,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:39,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:39,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:04:39,764 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:39,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:39,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1399506151, now seen corresponding path program 1 times [2020-10-14 00:04:39,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:39,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913231103] [2020-10-14 00:04:39,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:39,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:39,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:39,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:40,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:40,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:40,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:40,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:40,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:41,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:41,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:43,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:43,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:43,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:44,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:44,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 00:04:44,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 00:04:44,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:04:44,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:44,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:04:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 00:04:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 00:04:44,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:44,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:44,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:44,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:44,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:44,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:44,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:44,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:44,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:44,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:44,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:44,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:44,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:44,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:44,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:44,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:44,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:44,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:44,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:44,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:44,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:44,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:45,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:04:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:45,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:45,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:45,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:45,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:45,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:45,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:45,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:45,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:45,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:45,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:45,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 00:04:45,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913231103] [2020-10-14 00:04:45,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:45,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:04:45,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177437736] [2020-10-14 00:04:45,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:04:45,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:45,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:04:45,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:04:45,021 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 9 states. [2020-10-14 00:04:45,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:45,536 INFO L93 Difference]: Finished difference Result 141 states and 167 transitions. [2020-10-14 00:04:45,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:04:45,536 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-14 00:04:45,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:45,538 INFO L225 Difference]: With dead ends: 141 [2020-10-14 00:04:45,538 INFO L226 Difference]: Without dead ends: 125 [2020-10-14 00:04:45,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:04:45,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-14 00:04:45,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 78. [2020-10-14 00:04:45,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-14 00:04:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2020-10-14 00:04:45,562 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 53 [2020-10-14 00:04:45,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:45,564 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2020-10-14 00:04:45,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:04:45,565 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2020-10-14 00:04:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 00:04:45,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:45,570 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:45,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:04:45,571 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:45,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:45,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1124746537, now seen corresponding path program 1 times [2020-10-14 00:04:45,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:45,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735284206] [2020-10-14 00:04:45,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:45,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:45,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:45,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:45,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:45,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:46,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:46,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:46,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:47,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:47,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:47,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:47,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:47,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:47,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:47,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:50,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:50,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 00:04:50,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 00:04:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:04:50,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:50,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:04:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:04:50,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:50,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:50,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:50,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:50,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:50,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:50,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:50,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:50,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:50,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:50,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:50,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:50,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:50,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:50,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:50,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:50,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:50,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:50,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:50,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:50,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:04:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:50,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:50,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:50,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:50,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:50,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:04:50,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:50,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:04:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:50,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 00:04:50,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735284206] [2020-10-14 00:04:50,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:50,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:04:50,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835133390] [2020-10-14 00:04:50,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:04:50,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:50,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:04:50,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:04:50,637 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand 4 states. [2020-10-14 00:04:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:50,768 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2020-10-14 00:04:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:04:50,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-14 00:04:50,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:50,770 INFO L225 Difference]: With dead ends: 96 [2020-10-14 00:04:50,770 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 00:04:50,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 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 00:04:50,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 00:04:50,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-14 00:04:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 00:04:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-10-14 00:04:50,784 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 53 [2020-10-14 00:04:50,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:50,784 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-10-14 00:04:50,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:04:50,784 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-10-14 00:04:50,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 00:04:50,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:50,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:50,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:04:50,786 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:50,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:50,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1346789241, now seen corresponding path program 2 times [2020-10-14 00:04:50,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:50,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344872545] [2020-10-14 00:04:50,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:50,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:50,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:50,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:50,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:50,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:55,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:55,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 00:04:55,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 00:04:55,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:04:55,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:55,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:55,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:04:55,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 00:04:55,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 00:04:55,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:55,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:55,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:55,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:55,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:55,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:55,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:55,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:55,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:55,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:55,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:55,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:55,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:55,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:55,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:55,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:55,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:55,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:55,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:55,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:55,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:55,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:04:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:55,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:55,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:55,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:55,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:55,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:55,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:55,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:55,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:55,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:55,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:55,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 00:04:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:55,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:55,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:55,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:55,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:55,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:55,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:55,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:55,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:55,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:55,994 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 00:04:55,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344872545] [2020-10-14 00:04:55,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:55,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:04:55,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071491592] [2020-10-14 00:04:55,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:04:55,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:55,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:04:55,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:04:55,996 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 10 states. [2020-10-14 00:04:56,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:56,595 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2020-10-14 00:04:56,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:04:56,596 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-10-14 00:04:56,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:56,598 INFO L225 Difference]: With dead ends: 140 [2020-10-14 00:04:56,598 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 00:04:56,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:04:56,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 00:04:56,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 77. [2020-10-14 00:04:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 00:04:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2020-10-14 00:04:56,625 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 62 [2020-10-14 00:04:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:56,625 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2020-10-14 00:04:56,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:04:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2020-10-14 00:04:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 00:04:56,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:56,627 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:56,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:04:56,631 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:56,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:56,632 INFO L82 PathProgramCache]: Analyzing trace with hash 502783739, now seen corresponding path program 1 times [2020-10-14 00:04:56,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:56,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309177028] [2020-10-14 00:04:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:56,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:56,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:56,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:56,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:56,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:56,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:56,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:58,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:58,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:01,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:01,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:01,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:01,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 00:05:01,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-14 00:05:01,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 00:05:01,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:01,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:01,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:01,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:05:01,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 00:05:01,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:01,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:01,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:01,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:01,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:01,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:01,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:01,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:01,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:01,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:01,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:01,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:01,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:01,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:01,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:01,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:01,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:01,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:01,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:01,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:01,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:05:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:01,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:01,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:01,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:01,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:01,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:01,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:01,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:01,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:01,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:01,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 00:05:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:01,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:01,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:01,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:01,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:01,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:01,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:01,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:01,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:01,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:01,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:01,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:05:01,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309177028] [2020-10-14 00:05:01,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:05:01,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:05:01,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210472218] [2020-10-14 00:05:01,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:05:01,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:01,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:05:01,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:05:01,705 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand 4 states. [2020-10-14 00:05:01,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:01,816 INFO L93 Difference]: Finished difference Result 100 states and 113 transitions. [2020-10-14 00:05:01,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:05:01,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-14 00:05:01,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:01,818 INFO L225 Difference]: With dead ends: 100 [2020-10-14 00:05:01,818 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 00:05:01,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 00:05:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 00:05:01,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-14 00:05:01,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 00:05:01,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-10-14 00:05:01,830 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 62 [2020-10-14 00:05:01,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:01,830 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-10-14 00:05:01,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:05:01,831 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-10-14 00:05:01,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 00:05:01,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:01,832 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:01,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:05:01,832 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:01,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:01,832 INFO L82 PathProgramCache]: Analyzing trace with hash 858269465, now seen corresponding path program 3 times [2020-10-14 00:05:01,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:01,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379125001] [2020-10-14 00:05:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:01,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:01,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:01,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:01,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:02,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:02,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:02,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:02,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:02,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:02,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:02,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:02,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:02,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:06,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:06,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:05:06,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 00:05:06,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:05:06,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:06,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:05:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 00:05:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 00:05:06,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:07,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:07,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:07,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:07,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:07,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:07,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:07,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:07,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:07,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:07,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:07,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:07,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:07,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:07,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:07,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:07,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:07,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:07,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:07,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:07,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:07,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:05:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:07,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:07,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:07,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:07,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:07,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:07,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:07,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:07,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:07,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:07,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:07,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:07,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 00:05:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:07,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:07,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:07,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:07,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:07,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:07,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:07,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:07,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:07,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:07,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:07,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:07,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:05:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:07,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:07,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:07,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:07,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:07,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:07,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:07,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:07,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 00:05:07,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379125001] [2020-10-14 00:05:07,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:07,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:05:07,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7062277] [2020-10-14 00:05:07,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:05:07,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:07,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:05:07,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:05:07,054 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 13 states. [2020-10-14 00:05:07,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:07,835 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2020-10-14 00:05:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 00:05:07,836 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-10-14 00:05:07,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:07,838 INFO L225 Difference]: With dead ends: 104 [2020-10-14 00:05:07,838 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 00:05:07,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:05:07,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 00:05:07,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 76. [2020-10-14 00:05:07,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-14 00:05:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-10-14 00:05:07,850 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 71 [2020-10-14 00:05:07,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:07,851 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-10-14 00:05:07,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:05:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-10-14 00:05:07,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 00:05:07,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:07,852 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:07,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:05:07,853 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:07,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:07,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1036192903, now seen corresponding path program 4 times [2020-10-14 00:05:07,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:07,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264100790] [2020-10-14 00:05:07,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:07,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:07,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:08,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:08,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:08,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:09,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:09,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:09,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:09,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:12,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 00:05:12,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:05:12,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:05:12,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:12,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:12,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:05:12,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:05:12,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:05:12,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:13,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:13,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:13,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:13,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:13,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:13,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:13,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:13,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:13,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:13,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:13,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:13,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:13,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:13,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:13,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:13,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:13,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:13,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:05:13,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:05:13,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:13,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:13,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:13,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:05:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:13,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:13,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:13,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:13,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:13,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:13,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:13,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:13,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 00:05:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:13,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:13,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:13,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:13,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:13,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:13,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:13,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:13,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:13,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:13,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:13,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:13,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:05:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:13,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:13,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:13,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:13,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:13,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:13,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:13,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:13,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:13,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 00:05:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:13,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:13,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:13,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:13,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:13,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:13,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:13,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:13,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:13,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 00:05:13,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264100790] [2020-10-14 00:05:13,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:13,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:05:13,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785271117] [2020-10-14 00:05:13,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:05:13,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:13,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:05:13,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:05:13,127 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 12 states. [2020-10-14 00:05:14,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:14,176 INFO L93 Difference]: Finished difference Result 229 states and 260 transitions. [2020-10-14 00:05:14,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 00:05:14,177 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-14 00:05:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:14,178 INFO L225 Difference]: With dead ends: 229 [2020-10-14 00:05:14,178 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 00:05:14,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812 [2020-10-14 00:05:14,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 00:05:14,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 92. [2020-10-14 00:05:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 00:05:14,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-10-14 00:05:14,194 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 80 [2020-10-14 00:05:14,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:14,194 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-10-14 00:05:14,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:05:14,194 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-10-14 00:05:14,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 00:05:14,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:14,195 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:14,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:05:14,196 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:14,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:14,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1923327601, now seen corresponding path program 5 times [2020-10-14 00:05:14,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:14,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878180434] [2020-10-14 00:05:14,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:14,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:14,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:14,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:14,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:19,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:19,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 00:05:19,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:05:19,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 00:05:19,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:19,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:19,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:05:19,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:05:19,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 00:05:19,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:19,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:19,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:19,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:19,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:19,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:19,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:19,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:19,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:19,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:19,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:19,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:19,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:19,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:19,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:19,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:19,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:19,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:19,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:19,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:19,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:19,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:19,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:19,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:19,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:19,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:05:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:19,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:19,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:19,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:19,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:19,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:19,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:19,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:19,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:19,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 00:05:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:19,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:19,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:19,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:19,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:19,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:19,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:19,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:19,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:19,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:19,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:19,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:05:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:19,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:19,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:19,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:19,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:19,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:19,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:19,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:19,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:19,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 00:05:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:19,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:19,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:19,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:19,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:19,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:19,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:19,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:19,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:05:19,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:05:19,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:19,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 35 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-14 00:05:19,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878180434] [2020-10-14 00:05:19,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:19,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:05:19,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094557066] [2020-10-14 00:05:19,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:05:19,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:19,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:05:19,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:05:19,515 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 14 states. [2020-10-14 00:05:20,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:20,250 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-10-14 00:05:20,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:05:20,251 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 96 [2020-10-14 00:05:20,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:20,252 INFO L225 Difference]: With dead ends: 118 [2020-10-14 00:05:20,252 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 00:05:20,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:05:20,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 00:05:20,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2020-10-14 00:05:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 00:05:20,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2020-10-14 00:05:20,283 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 96 [2020-10-14 00:05:20,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:20,283 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2020-10-14 00:05:20,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:05:20,284 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2020-10-14 00:05:20,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 00:05:20,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:20,288 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:20,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:05:20,289 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:20,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:20,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1360522445, now seen corresponding path program 6 times [2020-10-14 00:05:20,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:20,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432330832] [2020-10-14 00:05:20,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:20,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:20,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:20,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:21,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:21,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:21,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:21,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:25,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:25,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 00:05:25,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:05:25,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 00:05:25,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:25,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 00:05:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:05:25,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 00:05:25,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:25,759 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 31 [2020-10-14 00:05:26,238 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 36 [2020-10-14 00:05:26,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:27,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:27,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:05:27,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:27,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:27,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:27,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:05:27,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:05:27,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:27,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:27,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:05:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:27,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:27,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:27,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:27,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:27,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:27,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:27,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 00:05:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:27,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:27,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:27,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:27,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:05:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:27,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:27,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:27,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:27,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:27,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:27,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 00:05:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:27,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:27,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:27,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 17 proven. 44 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-14 00:05:27,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432330832] [2020-10-14 00:05:27,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:27,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:05:27,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841486942] [2020-10-14 00:05:27,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:05:27,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:27,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:05:27,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:05:27,109 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand 18 states. [2020-10-14 00:05:31,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:31,422 INFO L93 Difference]: Finished difference Result 190 states and 215 transitions. [2020-10-14 00:05:31,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 00:05:31,423 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 96 [2020-10-14 00:05:31,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:31,425 INFO L225 Difference]: With dead ends: 190 [2020-10-14 00:05:31,425 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 00:05:31,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 14 SyntacticMatches, 13 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=607, Invalid=2585, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 00:05:31,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 00:05:31,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 147. [2020-10-14 00:05:31,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 00:05:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 164 transitions. [2020-10-14 00:05:31,456 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 164 transitions. Word has length 96 [2020-10-14 00:05:31,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:31,456 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 164 transitions. [2020-10-14 00:05:31,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:05:31,456 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 164 transitions. [2020-10-14 00:05:31,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 00:05:31,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:31,458 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:31,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:05:31,458 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:31,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:31,458 INFO L82 PathProgramCache]: Analyzing trace with hash 685660229, now seen corresponding path program 7 times [2020-10-14 00:05:31,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:31,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717903617] [2020-10-14 00:05:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:31,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:31,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:31,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:31,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:32,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:32,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:32,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:32,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:36,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:36,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:36,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 00:05:36,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 00:05:36,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 00:05:36,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:36,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 00:05:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:05:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 00:05:36,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:37,128 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 32 [2020-10-14 00:05:37,368 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2020-10-14 00:05:38,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:38,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:38,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:38,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:38,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:38,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:38,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:38,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:38,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:38,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:38,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:38,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:38,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:38,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:38,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:38,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:38,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:38,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:05:38,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:05:38,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:38,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:38,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:38,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:38,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:38,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:38,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:05:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:38,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:38,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:38,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:38,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:38,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:05:38,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:38,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:38,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:38,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:38,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:38,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:38,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 00:05:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:38,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:38,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:38,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:38,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:38,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:38,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:38,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:38,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:38,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:38,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:38,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:38,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:05:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:38,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:38,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:38,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:38,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:38,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:05:38,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:38,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:38,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:38,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:38,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:38,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:38,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 00:05:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:38,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:38,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:38,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:38,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:38,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:38,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:38,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:38,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:38,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:38,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:38,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:38,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:05:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:38,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:38,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:38,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:38,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:38,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:38,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:38,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:38,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:38,142 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-14 00:05:38,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717903617] [2020-10-14 00:05:38,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:38,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 00:05:38,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106314555] [2020-10-14 00:05:38,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 00:05:38,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:38,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 00:05:38,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:05:38,144 INFO L87 Difference]: Start difference. First operand 147 states and 164 transitions. Second operand 19 states. [2020-10-14 00:05:38,920 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2020-10-14 00:05:39,059 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2020-10-14 00:05:39,859 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2020-10-14 00:05:40,053 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-10-14 00:05:40,267 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-14 00:05:40,417 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2020-10-14 00:05:40,662 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-14 00:05:40,859 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-10-14 00:05:41,655 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2020-10-14 00:05:42,002 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-10-14 00:05:42,947 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-14 00:05:43,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:43,281 INFO L93 Difference]: Finished difference Result 226 states and 258 transitions. [2020-10-14 00:05:43,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 00:05:43,282 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 105 [2020-10-14 00:05:43,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:43,284 INFO L225 Difference]: With dead ends: 226 [2020-10-14 00:05:43,284 INFO L226 Difference]: Without dead ends: 210 [2020-10-14 00:05:43,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 8 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=427, Invalid=2225, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 00:05:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-14 00:05:43,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 189. [2020-10-14 00:05:43,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 00:05:43,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 214 transitions. [2020-10-14 00:05:43,309 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 214 transitions. Word has length 105 [2020-10-14 00:05:43,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:43,310 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 214 transitions. [2020-10-14 00:05:43,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 00:05:43,310 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 214 transitions. [2020-10-14 00:05:43,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 00:05:43,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:43,311 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:43,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:05:43,312 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:43,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:43,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1628131970, now seen corresponding path program 8 times [2020-10-14 00:05:43,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:43,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794862019] [2020-10-14 00:05:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:43,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:43,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:43,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:48,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 00:05:48,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:05:48,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 00:05:48,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:48,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:05:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:05:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:05:48,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:48,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:48,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:48,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:48,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:48,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:48,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:48,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:48,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:48,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:48,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:48,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:48,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:48,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:48,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:48,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:48,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 00:05:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:48,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:48,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:48,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:48,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:48,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:48,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:48,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:48,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 00:05:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:48,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:48,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:48,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:48,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:48,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:48,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:48,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:48,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:48,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:48,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:48,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:05:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:48,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:48,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:48,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:48,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:48,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:48,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 00:05:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:48,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:48,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:48,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:48,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:48,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:48,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-14 00:05:48,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794862019] [2020-10-14 00:05:48,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:48,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:05:48,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939038978] [2020-10-14 00:05:48,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:05:48,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:48,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:05:48,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:05:48,522 INFO L87 Difference]: Start difference. First operand 189 states and 214 transitions. Second operand 10 states. [2020-10-14 00:05:49,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:49,259 INFO L93 Difference]: Finished difference Result 344 states and 386 transitions. [2020-10-14 00:05:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:05:49,260 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-10-14 00:05:49,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:49,262 INFO L225 Difference]: With dead ends: 344 [2020-10-14 00:05:49,262 INFO L226 Difference]: Without dead ends: 198 [2020-10-14 00:05:49,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:05:49,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-14 00:05:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 184. [2020-10-14 00:05:49,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-14 00:05:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 202 transitions. [2020-10-14 00:05:49,287 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 202 transitions. Word has length 108 [2020-10-14 00:05:49,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:49,287 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 202 transitions. [2020-10-14 00:05:49,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:05:49,287 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 202 transitions. [2020-10-14 00:05:49,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 00:05:49,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:49,289 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:49,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:05:49,289 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:49,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:49,290 INFO L82 PathProgramCache]: Analyzing trace with hash -460500019, now seen corresponding path program 9 times [2020-10-14 00:05:49,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:49,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983010489] [2020-10-14 00:05:49,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:49,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:50,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:50,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:51,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:53,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:54,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:54,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 00:05:54,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 00:05:54,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:05:54,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:54,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:54,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:05:54,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:05:54,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 00:05:54,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:55,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:55,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:55,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:55,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:55,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:55,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:55,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:55,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:55,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:55,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:55,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:55,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:55,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:55,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:55,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:55,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:55,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:05:55,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:05:55,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:55,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:55,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:55,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:55,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:55,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:55,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:05:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:55,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:55,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:55,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:55,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:55,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:55,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:55,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:55,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 00:05:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:55,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:55,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:55,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:55,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:55,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:55,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:55,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:55,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:55,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:55,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:55,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:05:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:55,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:55,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:55,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:55,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:55,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:55,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:55,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:55,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:55,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:55,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:55,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:55,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 00:05:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:55,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:55,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:55,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:55,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:55,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:55,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:55,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:55,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:55,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:55,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:55,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:55,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:05:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:55,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:55,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:55,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:55,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:55,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:55,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:55,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:55,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:55,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:55,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 00:05:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:55,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:55,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:55,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:55,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:55,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:55,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:55,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:55,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:55,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:55,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:55,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:55,821 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 98 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 00:05:55,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983010489] [2020-10-14 00:05:55,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:55,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 00:05:55,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556162719] [2020-10-14 00:05:55,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 00:05:55,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:55,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 00:05:55,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:05:55,824 INFO L87 Difference]: Start difference. First operand 184 states and 202 transitions. Second operand 20 states. [2020-10-14 00:05:57,933 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-10-14 00:05:58,092 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-14 00:05:58,335 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2020-10-14 00:05:58,527 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2020-10-14 00:06:00,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:00,792 INFO L93 Difference]: Finished difference Result 210 states and 232 transitions. [2020-10-14 00:06:00,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 00:06:00,793 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 114 [2020-10-14 00:06:00,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:00,796 INFO L225 Difference]: With dead ends: 210 [2020-10-14 00:06:00,796 INFO L226 Difference]: Without dead ends: 194 [2020-10-14 00:06:00,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=579, Invalid=2843, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 00:06:00,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-14 00:06:00,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2020-10-14 00:06:00,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 00:06:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 208 transitions. [2020-10-14 00:06:00,822 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 208 transitions. Word has length 114 [2020-10-14 00:06:00,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:00,822 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 208 transitions. [2020-10-14 00:06:00,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 00:06:00,822 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 208 transitions. [2020-10-14 00:06:00,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 00:06:00,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:00,823 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:00,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:06:00,824 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:00,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:00,824 INFO L82 PathProgramCache]: Analyzing trace with hash 100211171, now seen corresponding path program 10 times [2020-10-14 00:06:00,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:00,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870683341] [2020-10-14 00:06:00,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:00,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:02,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:03,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:03,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:05,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:06,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 00:06:06,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:06:06,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5563 [2020-10-14 00:06:06,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:06,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 00:06:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:06:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 00:06:06,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:11,195 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 28 [2020-10-14 00:06:11,347 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 39 [2020-10-14 00:06:11,748 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 37 [2020-10-14 00:06:11,977 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 25 [2020-10-14 00:06:15,062 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 56 [2020-10-14 00:06:15,404 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 33 [2020-10-14 00:06:16,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:16,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:16,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:16,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:16,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:16,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:16,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:16,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:16,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:06:16,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:06:16,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:16,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:16,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:06:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:16,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:16,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:16,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:16,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:16,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:06:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:16,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:16,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:16,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:16,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:16,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:16,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:16,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:06:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:16,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:16,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:16,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:06:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:16,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:16,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:16,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:16,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 22 proven. 56 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-14 00:06:16,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870683341] [2020-10-14 00:06:16,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:16,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 00:06:16,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823930701] [2020-10-14 00:06:16,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 00:06:16,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:16,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 00:06:16,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:06:16,322 INFO L87 Difference]: Start difference. First operand 189 states and 208 transitions. Second operand 21 states. [2020-10-14 00:06:17,578 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2020-10-14 00:06:17,925 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-10-14 00:06:18,306 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2020-10-14 00:06:18,583 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2020-10-14 00:06:18,808 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-14 00:06:19,228 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-10-14 00:06:19,527 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-10-14 00:06:20,088 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-10-14 00:06:20,316 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-14 00:06:20,805 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-14 00:06:20,998 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-14 00:06:21,167 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-14 00:06:21,936 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2020-10-14 00:06:23,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:23,400 INFO L93 Difference]: Finished difference Result 289 states and 326 transitions. [2020-10-14 00:06:23,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 00:06:23,401 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 112 [2020-10-14 00:06:23,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:23,407 INFO L225 Difference]: With dead ends: 289 [2020-10-14 00:06:23,408 INFO L226 Difference]: Without dead ends: 273 [2020-10-14 00:06:23,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 15 SyntacticMatches, 19 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=534, Invalid=2888, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 00:06:23,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-14 00:06:23,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 252. [2020-10-14 00:06:23,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-14 00:06:23,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 282 transitions. [2020-10-14 00:06:23,447 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 282 transitions. Word has length 112 [2020-10-14 00:06:23,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:23,448 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 282 transitions. [2020-10-14 00:06:23,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 00:06:23,448 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 282 transitions. [2020-10-14 00:06:23,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 00:06:23,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:23,450 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:23,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:06:23,450 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:23,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:23,451 INFO L82 PathProgramCache]: Analyzing trace with hash 898421061, now seen corresponding path program 11 times [2020-10-14 00:06:23,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:23,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573321730] [2020-10-14 00:06:23,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:23,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:24,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:24,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:28,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:28,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 00:06:28,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:06:28,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 00:06:28,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:28,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 00:06:28,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:06:28,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 00:06:28,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:29,040 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-14 00:06:29,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:29,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:29,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:29,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:29,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:29,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:29,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:29,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:29,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:29,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:29,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:29,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:29,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:29,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:29,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:29,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:29,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:29,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:29,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:29,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:29,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:06:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:29,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:29,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:29,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:29,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:29,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:29,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:29,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:29,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:29,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 00:06:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:29,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:29,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:29,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:29,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:29,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:29,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:29,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:29,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:29,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:06:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:29,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:29,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:29,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:29,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:29,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:29,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:29,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:29,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:29,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:29,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 00:06:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:29,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:29,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:29,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:29,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:29,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:29,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:29,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:29,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:29,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:06:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:29,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:29,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:29,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:29,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:29,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:29,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:29,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:29,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:29,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 00:06:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:29,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:29,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:29,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:29,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:29,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:29,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:29,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:29,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:29,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:06:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:29,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:29,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:29,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:29,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:29,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:29,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:29,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:29,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 14 proven. 137 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-14 00:06:29,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573321730] [2020-10-14 00:06:29,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:29,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 00:06:29,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450510517] [2020-10-14 00:06:29,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 00:06:29,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:29,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 00:06:29,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:06:29,568 INFO L87 Difference]: Start difference. First operand 252 states and 282 transitions. Second operand 22 states. [2020-10-14 00:06:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:35,060 INFO L93 Difference]: Finished difference Result 351 states and 402 transitions. [2020-10-14 00:06:35,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-14 00:06:35,061 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 123 [2020-10-14 00:06:35,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:35,066 INFO L225 Difference]: With dead ends: 351 [2020-10-14 00:06:35,066 INFO L226 Difference]: Without dead ends: 349 [2020-10-14 00:06:35,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=544, Invalid=6098, Unknown=0, NotChecked=0, Total=6642 [2020-10-14 00:06:35,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-14 00:06:35,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 289. [2020-10-14 00:06:35,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-14 00:06:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 331 transitions. [2020-10-14 00:06:35,113 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 331 transitions. Word has length 123 [2020-10-14 00:06:35,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:35,114 INFO L479 AbstractCegarLoop]: Abstraction has 289 states and 331 transitions. [2020-10-14 00:06:35,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 00:06:35,114 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 331 transitions. [2020-10-14 00:06:35,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 00:06:35,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:35,116 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:35,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:06:35,117 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:35,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:35,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1213170671, now seen corresponding path program 12 times [2020-10-14 00:06:35,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:35,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151295975] [2020-10-14 00:06:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:35,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:35,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:36,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:36,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:37,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:37,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:38,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:39,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:40,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:40,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 00:06:40,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:06:40,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-14 00:06:40,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:40,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 00:06:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:06:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 00:06:40,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:41,410 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 34 [2020-10-14 00:06:41,641 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 46 [2020-10-14 00:06:42,338 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 43 [2020-10-14 00:06:42,780 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 26 [2020-10-14 00:06:43,842 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 27 [2020-10-14 00:06:44,157 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 26 [2020-10-14 00:06:44,784 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 26 [2020-10-14 00:06:45,091 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 27 [2020-10-14 00:06:45,289 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 25 [2020-10-14 00:06:45,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:45,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:45,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:45,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:45,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:45,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:45,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:45,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:45,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:45,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:45,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:45,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:45,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:45,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:45,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:45,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:45,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:45,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:06:45,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:06:45,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:45,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:45,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:45,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:45,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:45,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:45,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:06:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:45,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:45,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:45,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:45,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:45,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:45,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:45,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:45,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:45,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:45,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:45,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:45,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:06:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:45,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:45,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:45,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:45,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:45,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:45,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:45,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:45,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:06:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:45,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:45,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:45,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:45,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:45,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:45,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:45,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:45,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:45,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:06:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:45,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:45,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:45,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:45,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:45,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:45,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:45,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:45,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:45,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:45,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:06:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:45,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:45,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:45,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:45,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:45,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:45,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:45,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:45,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:45,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:45,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:45,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:45,570 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 25 proven. 78 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 00:06:45,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151295975] [2020-10-14 00:06:45,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:45,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 00:06:45,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627514113] [2020-10-14 00:06:45,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 00:06:45,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:45,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 00:06:45,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:06:45,572 INFO L87 Difference]: Start difference. First operand 289 states and 331 transitions. Second operand 22 states. [2020-10-14 00:06:48,137 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-14 00:06:49,092 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-10-14 00:06:49,489 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-14 00:06:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:51,664 INFO L93 Difference]: Finished difference Result 398 states and 465 transitions. [2020-10-14 00:06:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 00:06:51,665 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 121 [2020-10-14 00:06:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:51,668 INFO L225 Difference]: With dead ends: 398 [2020-10-14 00:06:51,668 INFO L226 Difference]: Without dead ends: 366 [2020-10-14 00:06:51,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 16 SyntacticMatches, 14 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=609, Invalid=2931, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 00:06:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-14 00:06:51,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 339. [2020-10-14 00:06:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-14 00:06:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 390 transitions. [2020-10-14 00:06:51,716 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 390 transitions. Word has length 121 [2020-10-14 00:06:51,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:51,717 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 390 transitions. [2020-10-14 00:06:51,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 00:06:51,717 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 390 transitions. [2020-10-14 00:06:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 00:06:51,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:51,719 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:51,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 00:06:51,719 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:51,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:51,720 INFO L82 PathProgramCache]: Analyzing trace with hash 862686100, now seen corresponding path program 13 times [2020-10-14 00:06:51,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:51,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944978727] [2020-10-14 00:06:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:51,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:51,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:51,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:56,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:56,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 00:06:56,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:06:56,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 00:06:56,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:56,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:06:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:06:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 00:06:56,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:57,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:57,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:57,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:57,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:57,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:57,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:57,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:57,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:57,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:57,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:57,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:57,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:57,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:57,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:57,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:57,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:57,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:57,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:57,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 00:06:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:57,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:57,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:57,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:57,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:57,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:57,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:57,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:57,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 00:06:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:57,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:57,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:57,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:57,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:57,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:57,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:57,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:57,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:57,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:57,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:57,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:06:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:57,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:57,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:57,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:57,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:06:57,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:57,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:57,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:57,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:57,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:57,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:57,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 00:06:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:57,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:57,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:57,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:06:57,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:57,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:57,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 36 proven. 15 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-14 00:06:57,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944978727] [2020-10-14 00:06:57,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:57,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:06:57,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068519415] [2020-10-14 00:06:57,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:06:57,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:57,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:06:57,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:06:57,110 INFO L87 Difference]: Start difference. First operand 339 states and 390 transitions. Second operand 12 states. [2020-10-14 00:06:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:58,342 INFO L93 Difference]: Finished difference Result 630 states and 726 transitions. [2020-10-14 00:06:58,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 00:06:58,344 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 124 [2020-10-14 00:06:58,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:58,348 INFO L225 Difference]: With dead ends: 630 [2020-10-14 00:06:58,349 INFO L226 Difference]: Without dead ends: 366 [2020-10-14 00:06:58,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:06:58,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-14 00:06:58,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 346. [2020-10-14 00:06:58,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-14 00:06:58,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 395 transitions. [2020-10-14 00:06:58,418 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 395 transitions. Word has length 124 [2020-10-14 00:06:58,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:58,419 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 395 transitions. [2020-10-14 00:06:58,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:06:58,419 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 395 transitions. [2020-10-14 00:06:58,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 00:06:58,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:58,423 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:58,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 00:06:58,423 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:58,423 INFO L82 PathProgramCache]: Analyzing trace with hash -233375027, now seen corresponding path program 14 times [2020-10-14 00:06:58,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:58,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543885564] [2020-10-14 00:06:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:58,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:58,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:58,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:58,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:58,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:59,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:01,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:03,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:03,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 00:07:03,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:07:03,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:07:03,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:03,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 00:07:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:07:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 00:07:03,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:03,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:03,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:03,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:03,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:03,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:03,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:03,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:03,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:03,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:03,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:07:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:03,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:03,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:03,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:03,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:03,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:07:03,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:07:03,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:03,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:03,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:03,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:07:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:03,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:03,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:03,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:03,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:03,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:03,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:03,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:03,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:03,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:03,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:03,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:03,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 00:07:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:03,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:03,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:03,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:03,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:03,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:03,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:03,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:03,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:03,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:03,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:03,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:03,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:07:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:03,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:03,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:03,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:03,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:03,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:03,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:03,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:03,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:03,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:03,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:03,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 00:07:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:03,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:03,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:03,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:03,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:03,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:03,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:03,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:03,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:03,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:03,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:03,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:03,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:07:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:03,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:03,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:03,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:03,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:03,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:03,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:03,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:03,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:03,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 00:07:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:03,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:03,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:03,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:03,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:03,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:03,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:03,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:03,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:03,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:03,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:03,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:03,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 00:07:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:03,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:03,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:03,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:03,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:03,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:03,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:03,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:03,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:03,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 00:07:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:03,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:03,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:03,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:03,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:03,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:03,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:03,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:03,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 180 proven. 6 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 00:07:03,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543885564] [2020-10-14 00:07:03,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:03,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 00:07:03,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849903278] [2020-10-14 00:07:03,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 00:07:03,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:03,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 00:07:03,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:07:03,925 INFO L87 Difference]: Start difference. First operand 346 states and 395 transitions. Second operand 17 states. [2020-10-14 00:07:05,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:05,698 INFO L93 Difference]: Finished difference Result 356 states and 404 transitions. [2020-10-14 00:07:05,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 00:07:05,699 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 132 [2020-10-14 00:07:05,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:05,701 INFO L225 Difference]: With dead ends: 356 [2020-10-14 00:07:05,701 INFO L226 Difference]: Without dead ends: 255 [2020-10-14 00:07:05,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=262, Invalid=928, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 00:07:05,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-14 00:07:05,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2020-10-14 00:07:05,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-14 00:07:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 288 transitions. [2020-10-14 00:07:05,769 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 288 transitions. Word has length 132 [2020-10-14 00:07:05,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:05,769 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 288 transitions. [2020-10-14 00:07:05,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 00:07:05,770 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 288 transitions. [2020-10-14 00:07:05,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 00:07:05,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:05,771 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:05,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 00:07:05,772 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:05,772 INFO L82 PathProgramCache]: Analyzing trace with hash 587310947, now seen corresponding path program 15 times [2020-10-14 00:07:05,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:05,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925914363] [2020-10-14 00:07:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:06,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:07,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:07,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:07,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:07,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:09,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:10,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:10,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 00:07:10,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:07:10,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-14 00:07:10,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:10,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 00:07:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:07:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 00:07:10,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:11,610 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2020-10-14 00:07:11,797 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 27 [2020-10-14 00:07:12,162 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 67 [2020-10-14 00:07:13,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:13,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:13,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:13,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:13,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:13,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:13,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:13,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:13,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:13,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:13,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:13,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:13,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:07:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:13,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:13,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:13,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:13,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:13,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:07:13,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:07:13,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:13,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:13,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:13,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:07:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:13,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:13,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:13,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:13,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:13,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:13,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:13,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:13,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:07:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:13,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:13,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:13,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:13,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:13,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:13,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:13,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:13,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:13,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:07:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:13,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:13,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:13,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:13,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:13,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:13,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:13,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:13,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:13,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:13,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:13,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:13,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:07:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:13,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:13,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:13,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:13,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:13,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:13,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:13,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:13,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:13,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:13,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:13,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:13,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:07:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:13,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:13,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:13,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:13,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:13,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:13,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:13,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:13,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:13,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:13,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:13,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:13,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:07:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:13,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:13,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:13,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:13,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:13,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:07:13,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:13,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:13,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:13,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:13,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 28 proven. 105 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 00:07:13,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925914363] [2020-10-14 00:07:13,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:13,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 00:07:13,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100440762] [2020-10-14 00:07:13,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 00:07:13,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:13,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 00:07:13,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:07:13,929 INFO L87 Difference]: Start difference. First operand 255 states and 288 transitions. Second operand 24 states. [2020-10-14 00:07:16,181 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 38 [2020-10-14 00:07:16,585 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2020-10-14 00:07:17,044 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-14 00:07:17,504 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-14 00:07:17,696 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-14 00:07:18,258 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-10-14 00:07:20,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:20,915 INFO L93 Difference]: Finished difference Result 285 states and 320 transitions. [2020-10-14 00:07:20,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 00:07:20,917 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 130 [2020-10-14 00:07:20,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:20,920 INFO L225 Difference]: With dead ends: 285 [2020-10-14 00:07:20,920 INFO L226 Difference]: Without dead ends: 259 [2020-10-14 00:07:20,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 18 SyntacticMatches, 7 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=442, Invalid=3098, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 00:07:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-14 00:07:20,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 254. [2020-10-14 00:07:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-14 00:07:20,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 285 transitions. [2020-10-14 00:07:20,956 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 285 transitions. Word has length 130 [2020-10-14 00:07:20,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:20,956 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 285 transitions. [2020-10-14 00:07:20,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 00:07:20,956 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 285 transitions. [2020-10-14 00:07:20,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 00:07:20,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:20,958 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:20,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 00:07:20,958 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:20,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:20,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1893954055, now seen corresponding path program 16 times [2020-10-14 00:07:20,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:20,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942384440] [2020-10-14 00:07:20,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:21,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:27,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:27,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 00:07:27,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:27,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6657 [2020-10-14 00:07:27,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:27,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:27,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 00:07:27,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:07:27,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 00:07:27,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0