/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/eca-rers2012/Problem18_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:14:36,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:14:36,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:14:36,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:14:36,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:14:36,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:14:36,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:14:36,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:14:36,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:14:36,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:14:36,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:14:36,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:14:36,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:14:36,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:14:36,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:14:36,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:14:36,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:14:36,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:14:36,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:14:36,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:14:36,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:14:36,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:14:36,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:14:36,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:14:36,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:14:36,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:14:36,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:14:36,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:14:36,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:14:36,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:14:36,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:14:36,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:14:36,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:14:36,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:14:36,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:14:36,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:14:36,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:14:36,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:14:36,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:14:36,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:14:36,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:14:36,354 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 04:14:36,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:14:36,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:14:36,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:14:36,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:14:36,391 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:14:36,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:14:36,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:14:36,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:14:36,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:14:36,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:14:36,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:14:36,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:14:36,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:14:36,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:14:36,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:14:36,395 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:14:36,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:14:36,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:14:36,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:14:36,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:14:36,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:14:36,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:14:36,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:14:36,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:14:36,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:14:36,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:14:36,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:14:36,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:14:36,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:14:36,398 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 04:14:36,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:14:36,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:14:36,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:14:36,730 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:14:36,731 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:14:36,731 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18.c [2020-10-14 04:14:36,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d99f0a4e1/3db4b20cf22d42a49a3685b070f04d5e/FLAG2224313fc [2020-10-14 04:14:37,452 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:14:37,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label18.c [2020-10-14 04:14:37,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d99f0a4e1/3db4b20cf22d42a49a3685b070f04d5e/FLAG2224313fc [2020-10-14 04:14:37,620 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d99f0a4e1/3db4b20cf22d42a49a3685b070f04d5e [2020-10-14 04:14:37,628 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:14:37,630 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:14:37,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:14:37,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:14:37,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:14:37,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:14:37" (1/1) ... [2020-10-14 04:14:37,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f8adb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:14:37, skipping insertion in model container [2020-10-14 04:14:37,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:14:37" (1/1) ... [2020-10-14 04:14:37,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:14:37,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:14:39,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:14:39,283 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:14:39,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:14:39,871 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:14:39,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:14:39 WrapperNode [2020-10-14 04:14:39,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:14:39,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:14:39,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:14:39,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:14:39,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:14:39" (1/1) ... [2020-10-14 04:14:39,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:14:39" (1/1) ... [2020-10-14 04:14:39,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:14:39" (1/1) ... [2020-10-14 04:14:39,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:14:39" (1/1) ... [2020-10-14 04:14:40,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:14:39" (1/1) ... [2020-10-14 04:14:40,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:14:39" (1/1) ... [2020-10-14 04:14:40,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:14:39" (1/1) ... [2020-10-14 04:14:40,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:14:40,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:14:40,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:14:40,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:14:40,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:14:39" (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 04:14:40,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:14:40,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:14:40,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:14:40,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:14:40,330 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:14:40,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:14:40,330 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:14:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:14:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:14:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:14:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:14:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:14:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:14:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:14:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:14:46,575 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:14:46,576 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:14:46,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:14:46 BoogieIcfgContainer [2020-10-14 04:14:46,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:14:46,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:14:46,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:14:46,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:14:46,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:14:37" (1/3) ... [2020-10-14 04:14:46,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a9f7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:14:46, skipping insertion in model container [2020-10-14 04:14:46,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:14:39" (2/3) ... [2020-10-14 04:14:46,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a9f7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:14:46, skipping insertion in model container [2020-10-14 04:14:46,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:14:46" (3/3) ... [2020-10-14 04:14:46,595 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label18.c [2020-10-14 04:14:46,606 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:14:46,616 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:14:46,630 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:14:46,657 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:14:46,658 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:14:46,658 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:14:46,658 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:14:46,658 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:14:46,658 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:14:46,659 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:14:46,659 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:14:46,696 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:14:46,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 04:14:46,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:46,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:14:46,707 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:46,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:46,714 INFO L82 PathProgramCache]: Analyzing trace with hash 269272858, now seen corresponding path program 1 times [2020-10-14 04:14:46,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:46,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708284377] [2020-10-14 04:14:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:47,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:47,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:47,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:14:47,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:47,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-14 04:14:47,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:47,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:14:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:14:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:14:47,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:14:47,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:47,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:47,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:47,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:47,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:47,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:14:47,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:47,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:14:47,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:47,494 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 04:14:47,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708284377] [2020-10-14 04:14:47,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:14:47,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:14:47,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100811666] [2020-10-14 04:14:47,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:14:47,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:47,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:14:47,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:14:47,522 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:14:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:54,701 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 04:14:54,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:14:54,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-14 04:14:54,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:54,731 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 04:14:54,732 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:14:54,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:14:54,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:14:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 04:14:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 04:14:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2331 transitions. [2020-10-14 04:14:54,895 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2331 transitions. Word has length 63 [2020-10-14 04:14:54,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:54,896 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2331 transitions. [2020-10-14 04:14:54,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:14:54,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2331 transitions. [2020-10-14 04:14:54,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 04:14:54,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:54,903 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:14:54,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:14:54,903 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:54,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:54,904 INFO L82 PathProgramCache]: Analyzing trace with hash 514103358, now seen corresponding path program 1 times [2020-10-14 04:14:54,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:54,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249376230] [2020-10-14 04:14:54,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:54,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:55,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:55,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:56,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:56,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 04:14:56,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:14:56,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1653 [2020-10-14 04:14:56,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:56,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:14:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:14:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:14:56,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:56,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:56,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:56,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:56,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:56,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:14:56,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:56,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:56,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:56,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:56,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:56,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:56,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:56,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:56,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:56,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:14:56,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:56,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 04:14:56,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:56,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:56,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:56,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:56,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:14:56,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:14:56,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249376230] [2020-10-14 04:14:56,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:56,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:14:56,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168997280] [2020-10-14 04:14:56,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:14:56,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:56,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:14:56,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:14:56,806 INFO L87 Difference]: Start difference. First operand 1425 states and 2331 transitions. Second operand 5 states. [2020-10-14 04:15:05,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:05,034 INFO L93 Difference]: Finished difference Result 4276 states and 7041 transitions. [2020-10-14 04:15:05,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:15:05,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-14 04:15:05,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:05,052 INFO L225 Difference]: With dead ends: 4276 [2020-10-14 04:15:05,052 INFO L226 Difference]: Without dead ends: 2857 [2020-10-14 04:15:05,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:15:05,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-14 04:15:05,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2853. [2020-10-14 04:15:05,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-14 04:15:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4171 transitions. [2020-10-14 04:15:05,146 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4171 transitions. Word has length 133 [2020-10-14 04:15:05,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:05,147 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4171 transitions. [2020-10-14 04:15:05,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:15:05,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4171 transitions. [2020-10-14 04:15:05,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 04:15:05,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:05,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:15:05,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:15:05,153 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:05,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:05,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1129284989, now seen corresponding path program 1 times [2020-10-14 04:15:05,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:05,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660614509] [2020-10-14 04:15:05,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:05,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:05,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:05,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:05,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 04:15:05,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:15:05,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-14 04:15:05,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:05,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:05,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:05,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:15:05,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:15:05,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:05,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:05,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:05,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:05,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:05,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:05,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:15:05,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:05,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:05,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:05,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:05,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:05,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:05,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:05,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:06,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:06,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:15:06,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:06,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 04:15:06,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:06,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:15:06,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:15:06,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660614509] [2020-10-14 04:15:06,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:06,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:15:06,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585787940] [2020-10-14 04:15:06,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:15:06,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:06,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:15:06,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:15:06,068 INFO L87 Difference]: Start difference. First operand 2853 states and 4171 transitions. Second operand 5 states. [2020-10-14 04:15:15,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:15,021 INFO L93 Difference]: Finished difference Result 8541 states and 12610 transitions. [2020-10-14 04:15:15,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:15:15,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 04:15:15,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:15,051 INFO L225 Difference]: With dead ends: 8541 [2020-10-14 04:15:15,051 INFO L226 Difference]: Without dead ends: 5694 [2020-10-14 04:15:15,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:15:15,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5694 states. [2020-10-14 04:15:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5694 to 5690. [2020-10-14 04:15:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5690 states. [2020-10-14 04:15:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 7504 transitions. [2020-10-14 04:15:15,204 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 7504 transitions. Word has length 134 [2020-10-14 04:15:15,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:15,205 INFO L479 AbstractCegarLoop]: Abstraction has 5690 states and 7504 transitions. [2020-10-14 04:15:15,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:15:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 7504 transitions. [2020-10-14 04:15:15,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 04:15:15,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:15,209 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:15:15,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:15:15,209 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:15,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:15,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1633850758, now seen corresponding path program 1 times [2020-10-14 04:15:15,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:15,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308310859] [2020-10-14 04:15:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:15,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:15,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:15,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:15,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 04:15:15,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:15:15,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 609 [2020-10-14 04:15:15,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:15,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:15,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:15,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:15:15,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:15:15,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:15,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:15,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:15,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:15,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:15,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:15,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:15:15,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:15,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:15,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:15,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:15,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:16,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:16,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:15:16,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:16,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 04:15:16,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:16,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:16,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:15:16,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:16,108 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:15:16,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308310859] [2020-10-14 04:15:16,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:16,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:15:16,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106246756] [2020-10-14 04:15:16,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:15:16,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:16,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:15:16,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:15:16,115 INFO L87 Difference]: Start difference. First operand 5690 states and 7504 transitions. Second operand 5 states. [2020-10-14 04:15:24,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:24,944 INFO L93 Difference]: Finished difference Result 16336 states and 21983 transitions. [2020-10-14 04:15:24,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:15:24,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-14 04:15:24,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:24,989 INFO L225 Difference]: With dead ends: 16336 [2020-10-14 04:15:24,989 INFO L226 Difference]: Without dead ends: 10652 [2020-10-14 04:15:25,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:15:25,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10652 states. [2020-10-14 04:15:25,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10652 to 10648. [2020-10-14 04:15:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10648 states. [2020-10-14 04:15:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10648 states to 10648 states and 13157 transitions. [2020-10-14 04:15:25,259 INFO L78 Accepts]: Start accepts. Automaton has 10648 states and 13157 transitions. Word has length 137 [2020-10-14 04:15:25,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:25,260 INFO L479 AbstractCegarLoop]: Abstraction has 10648 states and 13157 transitions. [2020-10-14 04:15:25,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:15:25,261 INFO L276 IsEmpty]: Start isEmpty. Operand 10648 states and 13157 transitions. [2020-10-14 04:15:25,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 04:15:25,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:25,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:15:25,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:15:25,269 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:25,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:25,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1928615938, now seen corresponding path program 1 times [2020-10-14 04:15:25,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:25,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826701859] [2020-10-14 04:15:25,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:25,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:25,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:25,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:26,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:26,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 04:15:26,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:15:26,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1150 [2020-10-14 04:15:26,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:26,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:26,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:15:26,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:15:26,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:26,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:26,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:26,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:26,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:26,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:26,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:15:26,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:26,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:26,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:26,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:26,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:26,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:26,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:26,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:26,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:26,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:15:26,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:26,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 04:15:26,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:26,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:26,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:15:26,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:15:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:15:26,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826701859] [2020-10-14 04:15:26,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:26,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:15:26,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140180672] [2020-10-14 04:15:26,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:15:26,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:26,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:15:26,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:15:26,711 INFO L87 Difference]: Start difference. First operand 10648 states and 13157 transitions. Second operand 5 states. [2020-10-14 04:15:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:39,886 INFO L93 Difference]: Finished difference Result 26249 states and 33283 transitions. [2020-10-14 04:15:39,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:15:39,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-14 04:15:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:39,943 INFO L225 Difference]: With dead ends: 26249 [2020-10-14 04:15:39,944 INFO L226 Difference]: Without dead ends: 15607 [2020-10-14 04:15:39,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:15:39,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15607 states. [2020-10-14 04:15:40,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15607 to 15603. [2020-10-14 04:15:40,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15603 states. [2020-10-14 04:15:40,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15603 states to 15603 states and 18757 transitions. [2020-10-14 04:15:40,403 INFO L78 Accepts]: Start accepts. Automaton has 15603 states and 18757 transitions. Word has length 151 [2020-10-14 04:15:40,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:40,404 INFO L479 AbstractCegarLoop]: Abstraction has 15603 states and 18757 transitions. [2020-10-14 04:15:40,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:15:40,404 INFO L276 IsEmpty]: Start isEmpty. Operand 15603 states and 18757 transitions. [2020-10-14 04:15:40,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 04:15:40,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:40,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:15:40,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:15:40,409 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:40,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:40,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1668142983, now seen corresponding path program 1 times [2020-10-14 04:15:40,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:40,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554493031] [2020-10-14 04:15:40,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:40,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:40,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:41,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:41,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 04:15:41,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:15:41,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-14 04:15:41,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:41,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:41,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:41,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 04:15:41,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:15:41,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:41,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:41,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:41,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:41,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:41,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:15:41,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:41,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:41,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:41,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:41,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:41,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:41,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:41,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:41,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:41,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 04:15:41,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:41,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 04:15:41,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:41,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 04:15:41,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:15:41,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554493031] [2020-10-14 04:15:41,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:41,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:15:41,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503776800] [2020-10-14 04:15:41,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:15:41,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:41,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:15:41,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:15:41,319 INFO L87 Difference]: Start difference. First operand 15603 states and 18757 transitions. Second operand 5 states. [2020-10-14 04:15:52,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:52,186 INFO L93 Difference]: Finished difference Result 39703 states and 48921 transitions. [2020-10-14 04:15:52,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:15:52,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-14 04:15:52,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:52,278 INFO L225 Difference]: With dead ends: 39703 [2020-10-14 04:15:52,278 INFO L226 Difference]: Without dead ends: 24106 [2020-10-14 04:15:52,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:15:52,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24106 states. [2020-10-14 04:15:52,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24106 to 24102. [2020-10-14 04:15:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24102 states. [2020-10-14 04:15:52,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24102 states to 24102 states and 29020 transitions. [2020-10-14 04:15:52,761 INFO L78 Accepts]: Start accepts. Automaton has 24102 states and 29020 transitions. Word has length 152 [2020-10-14 04:15:52,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:52,762 INFO L479 AbstractCegarLoop]: Abstraction has 24102 states and 29020 transitions. [2020-10-14 04:15:52,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:15:52,762 INFO L276 IsEmpty]: Start isEmpty. Operand 24102 states and 29020 transitions. [2020-10-14 04:15:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 04:15:52,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:52,767 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:15:52,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:15:52,768 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:52,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:52,768 INFO L82 PathProgramCache]: Analyzing trace with hash 464443791, now seen corresponding path program 1 times [2020-10-14 04:15:52,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:52,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813065990] [2020-10-14 04:15:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:52,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:53,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:53,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:53,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 04:15:53,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:15:53,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 831 [2020-10-14 04:15:53,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:53,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 04:15:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:15:53,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:53,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:53,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:53,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:53,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:53,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:15:53,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:53,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:53,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:53,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 04:15:53,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:53,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 04:15:53,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:53,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:53,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:53,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:53,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 04:15:53,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:15:54,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813065990] [2020-10-14 04:15:54,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:54,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:15:54,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258091665] [2020-10-14 04:15:54,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:15:54,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:54,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:15:54,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:15:54,046 INFO L87 Difference]: Start difference. First operand 24102 states and 29020 transitions. Second operand 6 states. [2020-10-14 04:16:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:03,630 INFO L93 Difference]: Finished difference Result 55991 states and 69255 transitions. [2020-10-14 04:16:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:16:03,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 188 [2020-10-14 04:16:03,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:03,729 INFO L225 Difference]: With dead ends: 55991 [2020-10-14 04:16:03,729 INFO L226 Difference]: Without dead ends: 31895 [2020-10-14 04:16:03,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:16:03,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31895 states. [2020-10-14 04:16:04,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31895 to 30487. [2020-10-14 04:16:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30487 states. [2020-10-14 04:16:04,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30487 states to 30487 states and 37876 transitions. [2020-10-14 04:16:04,818 INFO L78 Accepts]: Start accepts. Automaton has 30487 states and 37876 transitions. Word has length 188 [2020-10-14 04:16:04,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:04,819 INFO L479 AbstractCegarLoop]: Abstraction has 30487 states and 37876 transitions. [2020-10-14 04:16:04,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:16:04,819 INFO L276 IsEmpty]: Start isEmpty. Operand 30487 states and 37876 transitions. [2020-10-14 04:16:04,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-14 04:16:04,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:04,829 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:16:04,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:16:04,829 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:04,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:04,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1642804466, now seen corresponding path program 1 times [2020-10-14 04:16:04,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:04,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931266644] [2020-10-14 04:16:04,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:04,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:04,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:05,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:06,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:09,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:09,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 04:16:09,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:16:09,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4423 [2020-10-14 04:16:09,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:09,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:09,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:09,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 04:16:09,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 04:16:09,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:09,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:09,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:09,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:09,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:09,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:09,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:16:09,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:09,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:09,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:09,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:09,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:09,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:09,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:16:09,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:09,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 04:16:09,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:09,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:16:09,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:09,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 04:16:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:09,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:09,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:09,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:16:09,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:09,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 04:16:09,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:09,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:16:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:16:09,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:16:09,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931266644] [2020-10-14 04:16:09,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:09,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:16:09,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23602266] [2020-10-14 04:16:09,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:16:09,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:09,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:16:09,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:16:09,676 INFO L87 Difference]: Start difference. First operand 30487 states and 37876 transitions. Second operand 7 states. [2020-10-14 04:16:18,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:18,814 INFO L93 Difference]: Finished difference Result 62629 states and 78360 transitions. [2020-10-14 04:16:18,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:16:18,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-10-14 04:16:18,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:18,894 INFO L225 Difference]: With dead ends: 62629 [2020-10-14 04:16:18,894 INFO L226 Difference]: Without dead ends: 29321 [2020-10-14 04:16:18,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:16:18,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29321 states. [2020-10-14 04:16:19,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29321 to 26481. [2020-10-14 04:16:19,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26481 states. [2020-10-14 04:16:19,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26481 states to 26481 states and 31357 transitions. [2020-10-14 04:16:19,393 INFO L78 Accepts]: Start accepts. Automaton has 26481 states and 31357 transitions. Word has length 227 [2020-10-14 04:16:19,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:19,395 INFO L479 AbstractCegarLoop]: Abstraction has 26481 states and 31357 transitions. [2020-10-14 04:16:19,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:16:19,395 INFO L276 IsEmpty]: Start isEmpty. Operand 26481 states and 31357 transitions. [2020-10-14 04:16:19,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-14 04:16:19,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:19,417 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:16:19,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:16:19,417 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:19,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:19,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1610504222, now seen corresponding path program 1 times [2020-10-14 04:16:19,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:19,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089105362] [2020-10-14 04:16:19,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:19,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:19,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:19,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:22,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:24,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:24,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-14 04:16:24,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:16:24,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4985 [2020-10-14 04:16:24,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:24,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:24,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:24,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 04:16:24,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 04:16:24,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:24,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:24,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:24,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:24,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:24,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:24,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:16:24,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:24,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:24,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:24,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:24,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:24,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:24,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:24,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:24,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 04:16:24,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:24,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:16:24,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:24,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 04:16:24,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:24,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 04:16:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:24,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:24,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:24,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:16:24,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:24,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 04:16:24,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:24,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:24,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:24,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:16:24,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:16:24,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:16:25,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089105362] [2020-10-14 04:16:25,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:25,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:16:25,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441658625] [2020-10-14 04:16:25,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:16:25,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:25,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:16:25,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:16:25,017 INFO L87 Difference]: Start difference. First operand 26481 states and 31357 transitions. Second operand 7 states. [2020-10-14 04:16:41,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:41,966 INFO L93 Difference]: Finished difference Result 69717 states and 85349 transitions. [2020-10-14 04:16:41,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:16:41,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-10-14 04:16:41,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:42,073 INFO L225 Difference]: With dead ends: 69717 [2020-10-14 04:16:42,073 INFO L226 Difference]: Without dead ends: 39498 [2020-10-14 04:16:42,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:16:42,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39498 states. [2020-10-14 04:16:42,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39498 to 39494. [2020-10-14 04:16:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39494 states. [2020-10-14 04:16:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39494 states to 39494 states and 44217 transitions. [2020-10-14 04:16:42,729 INFO L78 Accepts]: Start accepts. Automaton has 39494 states and 44217 transitions. Word has length 283 [2020-10-14 04:16:42,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:42,731 INFO L479 AbstractCegarLoop]: Abstraction has 39494 states and 44217 transitions. [2020-10-14 04:16:42,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:16:42,731 INFO L276 IsEmpty]: Start isEmpty. Operand 39494 states and 44217 transitions. [2020-10-14 04:16:42,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-14 04:16:42,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:42,746 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:16:42,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:16:42,747 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:42,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:42,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1704258098, now seen corresponding path program 1 times [2020-10-14 04:16:42,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:42,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958003958] [2020-10-14 04:16:42,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:42,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:42,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:43,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:43,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:47,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:47,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-14 04:16:47,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:16:47,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 04:16:47,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:47,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:16:47,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 04:16:47,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:47,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:47,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:47,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:47,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:47,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:47,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:16:47,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:47,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:47,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:47,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:47,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:47,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:48,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:48,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:16:48,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:48,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 04:16:48,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:48,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:48,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:48,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:48,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:16:48,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:48,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 04:16:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:48,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:48,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:48,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 04:16:48,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:48,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 04:16:48,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:48,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:16:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:16:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:48,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-14 04:16:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:48,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:48,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:48,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:16:48,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:48,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 04:16:48,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:48,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:48,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:48,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 04:16:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:48,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:48,536 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 240 proven. 94 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 04:16:48,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958003958] [2020-10-14 04:16:48,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:48,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:16:48,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774264380] [2020-10-14 04:16:48,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:16:48,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:48,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:16:48,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:16:48,542 INFO L87 Difference]: Start difference. First operand 39494 states and 44217 transitions. Second operand 7 states. [2020-10-14 04:16:57,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:57,309 INFO L93 Difference]: Finished difference Result 92655 states and 105686 transitions. [2020-10-14 04:16:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:16:57,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-14 04:16:57,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:57,443 INFO L225 Difference]: With dead ends: 92655 [2020-10-14 04:16:57,443 INFO L226 Difference]: Without dead ends: 52453 [2020-10-14 04:16:57,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:16:57,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52453 states. [2020-10-14 04:16:58,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52453 to 51742. [2020-10-14 04:16:58,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51742 states. [2020-10-14 04:16:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51742 states to 51742 states and 58247 transitions. [2020-10-14 04:16:59,911 INFO L78 Accepts]: Start accepts. Automaton has 51742 states and 58247 transitions. Word has length 325 [2020-10-14 04:16:59,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:59,911 INFO L479 AbstractCegarLoop]: Abstraction has 51742 states and 58247 transitions. [2020-10-14 04:16:59,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:16:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 51742 states and 58247 transitions. [2020-10-14 04:16:59,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-14 04:16:59,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:59,919 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:16:59,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:16:59,920 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:59,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:59,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1016357363, now seen corresponding path program 1 times [2020-10-14 04:16:59,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:59,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378973649] [2020-10-14 04:16:59,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:59,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:00,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:00,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:00,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:04,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:04,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-14 04:17:04,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:17:04,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:17:04,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:04,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:04,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:04,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-14 04:17:04,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 04:17:04,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:05,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:05,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:05,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:05,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:05,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:05,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:17:05,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:05,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:05,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:05,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:05,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:05,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:05,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:17:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:05,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:05,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:05,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:17:05,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:05,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:17:05,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:05,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:05,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:05,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:05,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:05,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:17:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:05,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:05,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:05,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 04:17:05,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:05,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 04:17:05,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:05,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:17:05,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:05,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-14 04:17:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:05,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:05,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:05,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:17:05,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 04:17:05,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:05,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:17:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:17:05,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:05,492 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 04:17:05,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378973649] [2020-10-14 04:17:05,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:17:05,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:17:05,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721995480] [2020-10-14 04:17:05,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:17:05,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:05,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:17:05,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:17:05,495 INFO L87 Difference]: Start difference. First operand 51742 states and 58247 transitions. Second operand 7 states. [2020-10-14 04:17:13,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:17:13,056 INFO L93 Difference]: Finished difference Result 103510 states and 116612 transitions. [2020-10-14 04:17:13,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:17:13,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2020-10-14 04:17:13,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:17:13,200 INFO L225 Difference]: With dead ends: 103510 [2020-10-14 04:17:13,200 INFO L226 Difference]: Without dead ends: 51778 [2020-10-14 04:17:13,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:17:13,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51778 states. [2020-10-14 04:17:13,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51778 to 51732. [2020-10-14 04:17:13,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51732 states. [2020-10-14 04:17:14,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51732 states to 51732 states and 56438 transitions. [2020-10-14 04:17:14,039 INFO L78 Accepts]: Start accepts. Automaton has 51732 states and 56438 transitions. Word has length 326 [2020-10-14 04:17:14,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:17:14,040 INFO L479 AbstractCegarLoop]: Abstraction has 51732 states and 56438 transitions. [2020-10-14 04:17:14,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:17:14,041 INFO L276 IsEmpty]: Start isEmpty. Operand 51732 states and 56438 transitions. [2020-10-14 04:17:14,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-14 04:17:14,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:17:14,047 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:17:14,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:17:14,047 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:17:14,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:17:14,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1674557377, now seen corresponding path program 1 times [2020-10-14 04:17:14,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:17:14,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016207185] [2020-10-14 04:17:14,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:17:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:14,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:14,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:14,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:17,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:19,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:19,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-14 04:17:19,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:17:19,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 04:17:19,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:19,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:17:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:17:19,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:19,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:19,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:19,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:19,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:19,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:19,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:17:19,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:19,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:19,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:19,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:17:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:19,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:19,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:19,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:17:19,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:19,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:17:19,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:19,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:17:19,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:19,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:17:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:19,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:19,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:19,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:17:19,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:19,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 04:17:19,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:19,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:19,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:19,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:17:19,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:17:19,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:19,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-14 04:17:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:19,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:19,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:19,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:17:19,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:19,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:17:19,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:19,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:19,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:19,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 04:17:19,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:19,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 241 proven. 94 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:17:19,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016207185] [2020-10-14 04:17:19,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:17:19,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:17:19,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283027729] [2020-10-14 04:17:19,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:17:19,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:19,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:17:19,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:17:19,618 INFO L87 Difference]: Start difference. First operand 51732 states and 56438 transitions. Second operand 7 states. [2020-10-14 04:17:29,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:17:29,193 INFO L93 Difference]: Finished difference Result 107022 states and 119571 transitions. [2020-10-14 04:17:29,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:17:29,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-14 04:17:29,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:17:29,387 INFO L225 Difference]: With dead ends: 107022 [2020-10-14 04:17:29,387 INFO L226 Difference]: Without dead ends: 55300 [2020-10-14 04:17:29,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:17:29,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55300 states. [2020-10-14 04:17:30,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55300 to 54000. [2020-10-14 04:17:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54000 states. [2020-10-14 04:17:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54000 states to 54000 states and 59091 transitions. [2020-10-14 04:17:30,716 INFO L78 Accepts]: Start accepts. Automaton has 54000 states and 59091 transitions. Word has length 336 [2020-10-14 04:17:30,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:17:30,716 INFO L479 AbstractCegarLoop]: Abstraction has 54000 states and 59091 transitions. [2020-10-14 04:17:30,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:17:30,717 INFO L276 IsEmpty]: Start isEmpty. Operand 54000 states and 59091 transitions. [2020-10-14 04:17:30,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-14 04:17:30,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:17:30,725 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:17:30,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:17:30,725 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:17:30,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:17:30,726 INFO L82 PathProgramCache]: Analyzing trace with hash -825566533, now seen corresponding path program 1 times [2020-10-14 04:17:30,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:17:30,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838576372] [2020-10-14 04:17:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:17:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:30,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:30,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:30,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:31,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:33,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:35,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:35,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-14 04:17:35,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:17:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 04:17:35,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:35,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:35,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:35,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:17:35,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:17:35,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:35,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:35,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:35,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:35,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:35,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:35,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:17:35,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:35,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:35,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:35,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:35,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:35,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:35,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:17:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:35,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:35,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:35,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:17:35,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:35,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 04:17:35,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:35,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:35,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:17:35,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:35,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:17:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:36,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:36,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:36,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:17:36,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:36,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 04:17:36,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:36,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:36,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:36,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:17:36,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:17:36,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:36,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 04:17:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:36,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:36,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:36,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:17:36,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:36,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:17:36,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:36,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 04:17:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:36,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 275 proven. 94 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-14 04:17:36,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838576372] [2020-10-14 04:17:36,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:17:36,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:17:36,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361955820] [2020-10-14 04:17:36,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:17:36,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:36,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:17:36,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:17:36,374 INFO L87 Difference]: Start difference. First operand 54000 states and 59091 transitions. Second operand 7 states. [2020-10-14 04:17:45,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:17:45,946 INFO L93 Difference]: Finished difference Result 108018 states and 118229 transitions. [2020-10-14 04:17:45,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:17:45,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 386 [2020-10-14 04:17:45,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:17:46,054 INFO L225 Difference]: With dead ends: 108018 [2020-10-14 04:17:46,055 INFO L226 Difference]: Without dead ends: 54028 [2020-10-14 04:17:46,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:17:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54028 states. [2020-10-14 04:17:46,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54028 to 54000. [2020-10-14 04:17:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54000 states. [2020-10-14 04:17:46,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54000 states to 54000 states and 59047 transitions. [2020-10-14 04:17:46,675 INFO L78 Accepts]: Start accepts. Automaton has 54000 states and 59047 transitions. Word has length 386 [2020-10-14 04:17:46,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:17:46,676 INFO L479 AbstractCegarLoop]: Abstraction has 54000 states and 59047 transitions. [2020-10-14 04:17:46,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:17:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand 54000 states and 59047 transitions. [2020-10-14 04:17:46,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-14 04:17:46,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:17:46,686 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:17:46,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:17:46,686 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:17:46,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:17:46,687 INFO L82 PathProgramCache]: Analyzing trace with hash -646413369, now seen corresponding path program 1 times [2020-10-14 04:17:46,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:17:46,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107364541] [2020-10-14 04:17:46,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:17:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:46,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:46,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:46,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:50,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:50,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:51,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:51,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-14 04:17:51,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:17:51,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 04:17:51,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:51,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-14 04:17:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:17:51,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:51,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:51,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:51,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:51,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:51,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:51,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:17:51,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:51,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:51,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:51,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:17:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:51,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:51,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:51,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:17:51,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:51,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:17:51,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:51,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:51,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:51,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:17:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:51,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:51,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:51,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 04:17:51,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:51,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:17:51,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:51,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:17:51,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:51,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-14 04:17:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:51,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:51,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:51,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:17:51,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:51,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 04:17:51,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:51,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:51,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:51,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:17:51,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:17:51,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:52,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:17:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:52,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:52,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:52,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:17:52,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:52,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:17:52,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:52,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:52,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 04:17:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:52,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 399 proven. 94 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-10-14 04:17:52,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107364541] [2020-10-14 04:17:52,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:17:52,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:17:52,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279673926] [2020-10-14 04:17:52,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:17:52,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:52,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:17:52,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:17:52,199 INFO L87 Difference]: Start difference. First operand 54000 states and 59047 transitions. Second operand 7 states. [2020-10-14 04:18:03,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:03,439 INFO L93 Difference]: Finished difference Result 113824 states and 125582 transitions. [2020-10-14 04:18:03,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:18:03,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 432 [2020-10-14 04:18:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:03,620 INFO L225 Difference]: With dead ends: 113824 [2020-10-14 04:18:03,620 INFO L226 Difference]: Without dead ends: 59834 [2020-10-14 04:18:03,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:18:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59834 states. [2020-10-14 04:18:04,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59834 to 59809. [2020-10-14 04:18:04,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59809 states. [2020-10-14 04:18:04,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59809 states to 59809 states and 65704 transitions. [2020-10-14 04:18:04,747 INFO L78 Accepts]: Start accepts. Automaton has 59809 states and 65704 transitions. Word has length 432 [2020-10-14 04:18:04,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:04,753 INFO L479 AbstractCegarLoop]: Abstraction has 59809 states and 65704 transitions. [2020-10-14 04:18:04,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:18:04,754 INFO L276 IsEmpty]: Start isEmpty. Operand 59809 states and 65704 transitions. [2020-10-14 04:18:04,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-14 04:18:04,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:04,773 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:04,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 04:18:04,774 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:04,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:04,775 INFO L82 PathProgramCache]: Analyzing trace with hash -604566569, now seen corresponding path program 1 times [2020-10-14 04:18:04,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:04,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612919695] [2020-10-14 04:18:04,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:04,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:04,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:05,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking...