/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/Problem17_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:58:04,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:58:04,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:58:04,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:58:04,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:58:04,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:58:04,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:58:04,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:58:04,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:58:04,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:58:04,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:58:04,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:58:04,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:58:04,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:58:04,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:58:04,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:58:04,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:58:04,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:58:04,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:58:04,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:58:04,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:58:04,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:58:04,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:58:04,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:58:04,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:58:04,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:58:04,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:58:04,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:58:04,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:58:04,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:58:04,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:58:04,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:58:04,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:58:04,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:58:04,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:58:04,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:58:04,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:58:04,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:58:04,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:58:04,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:58:04,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:58:04,698 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 03:58:04,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:58:04,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:58:04,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:58:04,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:58:04,723 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:58:04,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:58:04,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:58:04,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:58:04,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:58:04,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:58:04,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:58:04,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:58:04,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:58:04,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:58:04,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:58:04,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:58:04,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:58:04,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:58:04,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:58:04,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:58:04,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:58:04,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:58:04,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:58:04,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:58:04,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:58:04,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:58:04,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:58:04,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:58:04,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:58:04,728 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 03:58:05,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:58:05,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:58:05,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:58:05,038 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:58:05,039 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:58:05,040 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label18.c [2020-10-14 03:58:05,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b077b24a/f2ac98effdd2401bbee5560ee58f86d5/FLAG8c5c71ceb [2020-10-14 03:58:05,790 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:58:05,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label18.c [2020-10-14 03:58:05,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b077b24a/f2ac98effdd2401bbee5560ee58f86d5/FLAG8c5c71ceb [2020-10-14 03:58:05,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b077b24a/f2ac98effdd2401bbee5560ee58f86d5 [2020-10-14 03:58:05,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:58:05,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:58:05,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:58:05,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:58:05,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:58:05,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:58:05" (1/1) ... [2020-10-14 03:58:05,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e5dc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:05, skipping insertion in model container [2020-10-14 03:58:05,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:58:05" (1/1) ... [2020-10-14 03:58:05,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:58:06,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:58:07,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:58:07,413 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:58:07,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:58:07,870 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:58:07,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:07 WrapperNode [2020-10-14 03:58:07,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:58:07,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:58:07,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:58:07,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:58:07,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:07" (1/1) ... [2020-10-14 03:58:07,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:07" (1/1) ... [2020-10-14 03:58:07,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:07" (1/1) ... [2020-10-14 03:58:07,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:07" (1/1) ... [2020-10-14 03:58:08,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:07" (1/1) ... [2020-10-14 03:58:08,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:07" (1/1) ... [2020-10-14 03:58:08,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:07" (1/1) ... [2020-10-14 03:58:08,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:58:08,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:58:08,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:58:08,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:58:08,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:07" (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 03:58:08,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:58:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:58:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:58:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:58:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:58:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:58:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:58:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:58:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:58:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:58:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:58:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:58:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:58:15,034 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:58:15,034 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:58:15,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:58:15 BoogieIcfgContainer [2020-10-14 03:58:15,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:58:15,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:58:15,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:58:15,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:58:15,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:58:05" (1/3) ... [2020-10-14 03:58:15,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b11a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:58:15, skipping insertion in model container [2020-10-14 03:58:15,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:07" (2/3) ... [2020-10-14 03:58:15,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b11a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:58:15, skipping insertion in model container [2020-10-14 03:58:15,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:58:15" (3/3) ... [2020-10-14 03:58:15,055 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label18.c [2020-10-14 03:58:15,066 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:58:15,076 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:58:15,091 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:58:15,119 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:58:15,120 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:58:15,120 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:58:15,120 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:58:15,120 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:58:15,120 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:58:15,120 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:58:15,121 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:58:15,222 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 03:58:15,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 03:58:15,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:15,239 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] [2020-10-14 03:58:15,239 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:15,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:15,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1318120319, now seen corresponding path program 1 times [2020-10-14 03:58:15,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:15,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865754969] [2020-10-14 03:58:15,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:15,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:15,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:15,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 03:58:15,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:15,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-14 03:58:15,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:15,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:58:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:58:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 03:58:15,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:58:16,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:16,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:16,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:16,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:16,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:16,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 03:58:16,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:16,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:16,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:58:16,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:58:16,221 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 03:58:16,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865754969] [2020-10-14 03:58:16,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:58:16,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:58:16,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173602825] [2020-10-14 03:58:16,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:58:16,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:16,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:58:16,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:58:16,257 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 03:58:26,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:26,650 INFO L93 Difference]: Finished difference Result 1693 states and 3093 transitions. [2020-10-14 03:58:26,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:58:26,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-14 03:58:26,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:26,680 INFO L225 Difference]: With dead ends: 1693 [2020-10-14 03:58:26,681 INFO L226 Difference]: Without dead ends: 1011 [2020-10-14 03:58:26,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:58:26,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-14 03:58:26,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 986. [2020-10-14 03:58:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-10-14 03:58:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1578 transitions. [2020-10-14 03:58:26,829 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1578 transitions. Word has length 61 [2020-10-14 03:58:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:26,830 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1578 transitions. [2020-10-14 03:58:26,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:58:26,830 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1578 transitions. [2020-10-14 03:58:26,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 03:58:26,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:26,837 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, 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 03:58:26,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:58:26,838 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:26,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:26,838 INFO L82 PathProgramCache]: Analyzing trace with hash 2001166611, now seen corresponding path program 1 times [2020-10-14 03:58:26,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:26,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676246718] [2020-10-14 03:58:26,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:26,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:27,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:28,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:28,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:28,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 03:58:28,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:58:28,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1552 [2020-10-14 03:58:28,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:28,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:58:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 03:58:28,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:58:28,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:28,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:28,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:28,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:28,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:28,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:58:28,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:28,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:28,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:28,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:28,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:28,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:28,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:58:28,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:28,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 03:58:28,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:28,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:28,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:28,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:28,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:58:28,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:28,784 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:58:28,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676246718] [2020-10-14 03:58:28,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:28,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:58:28,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678986212] [2020-10-14 03:58:28,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:58:28,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:28,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:58:28,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:58:28,790 INFO L87 Difference]: Start difference. First operand 986 states and 1578 transitions. Second operand 5 states. [2020-10-14 03:58:42,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:42,853 INFO L93 Difference]: Finished difference Result 2874 states and 4638 transitions. [2020-10-14 03:58:42,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:58:42,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-14 03:58:42,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:42,869 INFO L225 Difference]: With dead ends: 2874 [2020-10-14 03:58:42,869 INFO L226 Difference]: Without dead ends: 1894 [2020-10-14 03:58:42,873 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 03:58:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2020-10-14 03:58:42,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1882. [2020-10-14 03:58:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1882 states. [2020-10-14 03:58:42,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2777 transitions. [2020-10-14 03:58:42,958 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2777 transitions. Word has length 130 [2020-10-14 03:58:42,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:42,962 INFO L479 AbstractCegarLoop]: Abstraction has 1882 states and 2777 transitions. [2020-10-14 03:58:42,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:58:42,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2777 transitions. [2020-10-14 03:58:42,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 03:58:42,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:42,974 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, 1, 1, 1, 1, 1, 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 03:58:42,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:58:42,975 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:42,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:42,975 INFO L82 PathProgramCache]: Analyzing trace with hash -418800343, now seen corresponding path program 1 times [2020-10-14 03:58:42,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:42,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187453954] [2020-10-14 03:58:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:43,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:44,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:44,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 03:58:44,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:58:44,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1137 [2020-10-14 03:58:44,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:44,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 03:58:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:58:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 03:58:44,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:44,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:44,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:44,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:44,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:44,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:44,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:58:44,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:44,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:44,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:44,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:44,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:58:44,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:44,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:44,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:44,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:44,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:58:44,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:44,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-14 03:58:44,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:44,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:58:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:58:44,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:58:44,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:58:44,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187453954] [2020-10-14 03:58:44,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:44,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:58:44,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927435565] [2020-10-14 03:58:44,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:58:44,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:44,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:58:44,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:58:44,783 INFO L87 Difference]: Start difference. First operand 1882 states and 2777 transitions. Second operand 8 states. [2020-10-14 03:59:06,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:06,658 INFO L93 Difference]: Finished difference Result 3877 states and 6043 transitions. [2020-10-14 03:59:06,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:59:06,663 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2020-10-14 03:59:06,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:06,693 INFO L225 Difference]: With dead ends: 3877 [2020-10-14 03:59:06,694 INFO L226 Difference]: Without dead ends: 2882 [2020-10-14 03:59:06,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:59:06,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-10-14 03:59:06,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2832. [2020-10-14 03:59:06,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2832 states. [2020-10-14 03:59:06,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 4068 transitions. [2020-10-14 03:59:06,802 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 4068 transitions. Word has length 135 [2020-10-14 03:59:06,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:06,803 INFO L479 AbstractCegarLoop]: Abstraction has 2832 states and 4068 transitions. [2020-10-14 03:59:06,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:59:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 4068 transitions. [2020-10-14 03:59:06,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 03:59:06,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:06,807 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:06,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:59:06,808 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:06,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:06,808 INFO L82 PathProgramCache]: Analyzing trace with hash 202831236, now seen corresponding path program 1 times [2020-10-14 03:59:06,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:06,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945737438] [2020-10-14 03:59:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:06,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:07,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:07,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:08,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:08,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 03:59:08,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:59:08,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1299 [2020-10-14 03:59:08,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:08,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:08,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:08,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 03:59:08,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 03:59:08,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:08,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:08,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:08,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:08,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:08,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:08,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:59:08,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:08,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:08,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:08,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:08,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:08,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:08,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 03:59:08,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:08,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 03:59:08,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:08,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:08,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:08,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:08,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 03:59:08,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:59:08,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945737438] [2020-10-14 03:59:08,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:08,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:59:08,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296419374] [2020-10-14 03:59:08,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:59:08,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:08,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:59:08,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:59:08,457 INFO L87 Difference]: Start difference. First operand 2832 states and 4068 transitions. Second operand 5 states. [2020-10-14 03:59:22,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:22,461 INFO L93 Difference]: Finished difference Result 6616 states and 9820 transitions. [2020-10-14 03:59:22,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:59:22,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-14 03:59:22,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:22,492 INFO L225 Difference]: With dead ends: 6616 [2020-10-14 03:59:22,493 INFO L226 Difference]: Without dead ends: 4683 [2020-10-14 03:59:22,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:59:22,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4683 states. [2020-10-14 03:59:22,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4683 to 4638. [2020-10-14 03:59:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4638 states. [2020-10-14 03:59:22,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 6800 transitions. [2020-10-14 03:59:22,666 INFO L78 Accepts]: Start accepts. Automaton has 4638 states and 6800 transitions. Word has length 145 [2020-10-14 03:59:22,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:22,667 INFO L479 AbstractCegarLoop]: Abstraction has 4638 states and 6800 transitions. [2020-10-14 03:59:22,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:59:22,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4638 states and 6800 transitions. [2020-10-14 03:59:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 03:59:22,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:22,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:22,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:59:22,670 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:22,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:22,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1495901741, now seen corresponding path program 1 times [2020-10-14 03:59:22,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:22,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012748632] [2020-10-14 03:59:22,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:22,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:23,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:23,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:23,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 03:59:23,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:59:23,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-14 03:59:23,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:23,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 03:59:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:59:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 03:59:23,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:23,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:23,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:23,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:23,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:23,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:23,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:59:23,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:23,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:23,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:23,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:23,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:59:23,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:23,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:23,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:23,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:23,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:23,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:59:23,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:59:23,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-14 03:59:23,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:23,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:23,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:59:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 03:59:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 03:59:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 03:59:23,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012748632] [2020-10-14 03:59:23,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:23,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:59:23,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548907050] [2020-10-14 03:59:23,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:59:23,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:23,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:59:23,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:59:23,817 INFO L87 Difference]: Start difference. First operand 4638 states and 6800 transitions. Second operand 6 states. [2020-10-14 03:59:43,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:43,939 INFO L93 Difference]: Finished difference Result 11207 states and 17280 transitions. [2020-10-14 03:59:43,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:59:43,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-10-14 03:59:43,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:43,978 INFO L225 Difference]: With dead ends: 11207 [2020-10-14 03:59:43,978 INFO L226 Difference]: Without dead ends: 6575 [2020-10-14 03:59:43,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:59:44,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6575 states. [2020-10-14 03:59:44,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6575 to 6529. [2020-10-14 03:59:44,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6529 states. [2020-10-14 03:59:44,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6529 states to 6529 states and 8957 transitions. [2020-10-14 03:59:44,220 INFO L78 Accepts]: Start accepts. Automaton has 6529 states and 8957 transitions. Word has length 146 [2020-10-14 03:59:44,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:44,220 INFO L479 AbstractCegarLoop]: Abstraction has 6529 states and 8957 transitions. [2020-10-14 03:59:44,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:59:44,221 INFO L276 IsEmpty]: Start isEmpty. Operand 6529 states and 8957 transitions. [2020-10-14 03:59:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 03:59:44,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:44,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:44,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:59:44,225 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:44,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:44,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1743746096, now seen corresponding path program 1 times [2020-10-14 03:59:44,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:44,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584604942] [2020-10-14 03:59:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:44,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:44,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:45,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:45,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 03:59:45,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:59:45,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1380 [2020-10-14 03:59:45,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:45,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 03:59:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 03:59:45,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:45,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:45,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:45,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:45,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:45,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:45,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:59:45,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:45,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:45,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:45,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:45,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:45,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:45,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:45,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:45,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:45,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:59:45,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:45,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 03:59:45,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:45,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 03:59:45,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:59:46,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584604942] [2020-10-14 03:59:46,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:46,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:59:46,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992605455] [2020-10-14 03:59:46,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:59:46,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:46,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:59:46,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:59:46,068 INFO L87 Difference]: Start difference. First operand 6529 states and 8957 transitions. Second operand 5 states. [2020-10-14 04:00:06,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:06,072 INFO L93 Difference]: Finished difference Result 14901 states and 21739 transitions. [2020-10-14 04:00:06,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:00:06,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-14 04:00:06,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:06,123 INFO L225 Difference]: With dead ends: 14901 [2020-10-14 04:00:06,123 INFO L226 Difference]: Without dead ends: 9250 [2020-10-14 04:00:06,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:00:06,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9250 states. [2020-10-14 04:00:06,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9250 to 9236. [2020-10-14 04:00:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9236 states. [2020-10-14 04:00:06,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9236 states to 9236 states and 12846 transitions. [2020-10-14 04:00:06,356 INFO L78 Accepts]: Start accepts. Automaton has 9236 states and 12846 transitions. Word has length 151 [2020-10-14 04:00:06,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:06,357 INFO L479 AbstractCegarLoop]: Abstraction has 9236 states and 12846 transitions. [2020-10-14 04:00:06,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:00:06,357 INFO L276 IsEmpty]: Start isEmpty. Operand 9236 states and 12846 transitions. [2020-10-14 04:00:06,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-14 04:00:06,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:06,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:06,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:00:06,364 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:06,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:06,364 INFO L82 PathProgramCache]: Analyzing trace with hash 179543913, now seen corresponding path program 1 times [2020-10-14 04:00:06,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:06,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857557865] [2020-10-14 04:00:06,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:06,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:07,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:07,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 04:00:07,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:00:07,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1077 [2020-10-14 04:00:07,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:07,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:07,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:00:07,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:00:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-14 04:00:07,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:07,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:07,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:07,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:07,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:07,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:07,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:00:07,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:07,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:07,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:07,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:07,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:00:07,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:07,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:07,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:07,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:08,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:08,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 04:00:08,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:00:08,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-14 04:00:08,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:08,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:08,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:00:08,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 04:00:08,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:00:08,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857557865] [2020-10-14 04:00:08,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:08,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:00:08,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078912640] [2020-10-14 04:00:08,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:00:08,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:08,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:00:08,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:00:08,383 INFO L87 Difference]: Start difference. First operand 9236 states and 12846 transitions. Second operand 7 states. [2020-10-14 04:00:30,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:30,998 INFO L93 Difference]: Finished difference Result 24211 states and 35596 transitions. [2020-10-14 04:00:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:00:31,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-14 04:00:31,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:31,056 INFO L225 Difference]: With dead ends: 24211 [2020-10-14 04:00:31,056 INFO L226 Difference]: Without dead ends: 15414 [2020-10-14 04:00:31,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:00:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15414 states. [2020-10-14 04:00:31,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15414 to 14885. [2020-10-14 04:00:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14885 states. [2020-10-14 04:00:31,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14885 states to 14885 states and 19992 transitions. [2020-10-14 04:00:31,457 INFO L78 Accepts]: Start accepts. Automaton has 14885 states and 19992 transitions. Word has length 216 [2020-10-14 04:00:31,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:31,457 INFO L479 AbstractCegarLoop]: Abstraction has 14885 states and 19992 transitions. [2020-10-14 04:00:31,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:00:31,458 INFO L276 IsEmpty]: Start isEmpty. Operand 14885 states and 19992 transitions. [2020-10-14 04:00:31,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 04:00:31,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:31,464 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, 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 04:00:31,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:00:31,465 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:31,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:31,465 INFO L82 PathProgramCache]: Analyzing trace with hash -960328432, now seen corresponding path program 1 times [2020-10-14 04:00:31,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:31,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58285912] [2020-10-14 04:00:31,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:31,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:33,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:36,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:36,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:36,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:36,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-14 04:00:36,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:00:36,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 04:00:36,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:36,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:00:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:00:36,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:00:36,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:36,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:36,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:36,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:36,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:36,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:00:36,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:36,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:36,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:36,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:36,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:00:36,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:36,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:36,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:36,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:00:36,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:36,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 04:00:36,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:36,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:36,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:36,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:36,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:00:36,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:00:36,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 04:00:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:36,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:36,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:36,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:00:36,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 04:00:36,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:36,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:00:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 04:00:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:00:37,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58285912] [2020-10-14 04:00:37,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:37,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:00:37,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183051562] [2020-10-14 04:00:37,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:00:37,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:37,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:00:37,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:00:37,219 INFO L87 Difference]: Start difference. First operand 14885 states and 19992 transitions. Second operand 7 states. [2020-10-14 04:00:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:51,316 INFO L93 Difference]: Finished difference Result 34810 states and 48577 transitions. [2020-10-14 04:00:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:00:51,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-10-14 04:00:51,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:51,389 INFO L225 Difference]: With dead ends: 34810 [2020-10-14 04:00:51,389 INFO L226 Difference]: Without dead ends: 18119 [2020-10-14 04:00:51,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:00:51,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18119 states. [2020-10-14 04:00:51,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18119 to 14556. [2020-10-14 04:00:51,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14556 states. [2020-10-14 04:00:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14556 states to 14556 states and 19076 transitions. [2020-10-14 04:00:51,891 INFO L78 Accepts]: Start accepts. Automaton has 14556 states and 19076 transitions. Word has length 221 [2020-10-14 04:00:51,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:51,891 INFO L479 AbstractCegarLoop]: Abstraction has 14556 states and 19076 transitions. [2020-10-14 04:00:51,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:00:51,892 INFO L276 IsEmpty]: Start isEmpty. Operand 14556 states and 19076 transitions. [2020-10-14 04:00:51,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-14 04:00:51,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:51,896 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, 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] [2020-10-14 04:00:51,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:00:51,897 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:51,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:51,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1878741214, now seen corresponding path program 1 times [2020-10-14 04:00:51,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:51,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915075555] [2020-10-14 04:00:51,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:52,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:52,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:56,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:56,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 04:00:56,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:00:56,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 04:00:56,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:56,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 04:00:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 04:00:56,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:57,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:57,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:57,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:57,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:57,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:57,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:00:57,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:57,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:57,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:57,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:57,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:57,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:00:57,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:57,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 04:00:57,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:57,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:57,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:57,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:57,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:00:57,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:00:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:57,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:57,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:57,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:00:57,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:57,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 04:00:57,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:57,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:57,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:57,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:57,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:00:57,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 04:00:57,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915075555] [2020-10-14 04:00:57,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:57,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:00:57,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868427587] [2020-10-14 04:00:57,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:00:57,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:57,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:00:57,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:00:57,542 INFO L87 Difference]: Start difference. First operand 14556 states and 19076 transitions. Second operand 5 states. [2020-10-14 04:01:23,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:01:23,224 INFO L93 Difference]: Finished difference Result 29560 states and 39504 transitions. [2020-10-14 04:01:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:01:23,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-10-14 04:01:23,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:01:23,286 INFO L225 Difference]: With dead ends: 29560 [2020-10-14 04:01:23,286 INFO L226 Difference]: Without dead ends: 15445 [2020-10-14 04:01:23,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:01:23,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15445 states. [2020-10-14 04:01:23,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15445 to 14560. [2020-10-14 04:01:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14560 states. [2020-10-14 04:01:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14560 states to 14560 states and 19088 transitions. [2020-10-14 04:01:23,633 INFO L78 Accepts]: Start accepts. Automaton has 14560 states and 19088 transitions. Word has length 234 [2020-10-14 04:01:23,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:01:23,634 INFO L479 AbstractCegarLoop]: Abstraction has 14560 states and 19088 transitions. [2020-10-14 04:01:23,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:01:23,634 INFO L276 IsEmpty]: Start isEmpty. Operand 14560 states and 19088 transitions. [2020-10-14 04:01:23,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-14 04:01:23,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:23,645 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:01:23,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:01:23,645 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:23,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:23,646 INFO L82 PathProgramCache]: Analyzing trace with hash 15026122, now seen corresponding path program 1 times [2020-10-14 04:01:23,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:23,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538148823] [2020-10-14 04:01:23,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:23,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:24,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:25,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:27,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:27,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-14 04:01:27,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:01:27,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4128 [2020-10-14 04:01:27,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:27,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:01:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 04:01:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 04:01:27,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:27,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:01:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:27,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:27,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:01:27,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:27,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:01:27,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:27,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:27,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:28,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:01:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:28,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:28,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:28,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:01:28,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:28,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 04:01:28,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:28,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:28,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:28,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:28,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:28,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:28,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:01:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:28,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:28,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:28,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:01:28,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:28,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 04:01:28,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:28,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:28,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:28,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:28,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:01:28,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:28,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 04:01:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:28,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:28,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:28,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:01:28,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:28,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 04:01:28,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:28,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:01:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:01:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 04:01:28,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 313 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 04:01:28,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538148823] [2020-10-14 04:01:28,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:01:28,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:01:28,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103375022] [2020-10-14 04:01:28,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:01:28,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:01:28,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:01:28,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:01:28,671 INFO L87 Difference]: Start difference. First operand 14560 states and 19088 transitions. Second operand 7 states. [2020-10-14 04:01:48,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:01:48,308 INFO L93 Difference]: Finished difference Result 35797 states and 49118 transitions. [2020-10-14 04:01:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:01:48,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-14 04:01:48,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:01:48,365 INFO L225 Difference]: With dead ends: 35797 [2020-10-14 04:01:48,365 INFO L226 Difference]: Without dead ends: 20276 [2020-10-14 04:01:48,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:01:48,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20276 states. [2020-10-14 04:01:48,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20276 to 19337. [2020-10-14 04:01:48,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19337 states. [2020-10-14 04:01:48,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19337 states to 19337 states and 24026 transitions. [2020-10-14 04:01:48,735 INFO L78 Accepts]: Start accepts. Automaton has 19337 states and 24026 transitions. Word has length 310 [2020-10-14 04:01:48,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:01:48,735 INFO L479 AbstractCegarLoop]: Abstraction has 19337 states and 24026 transitions. [2020-10-14 04:01:48,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:01:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand 19337 states and 24026 transitions. [2020-10-14 04:01:48,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-10-14 04:01:48,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:48,750 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:01:48,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:01:48,751 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:48,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:48,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1959104221, now seen corresponding path program 1 times [2020-10-14 04:01:48,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:48,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357120293] [2020-10-14 04:01:48,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:48,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:49,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:49,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:49,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:51,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:53,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:53,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-14 04:01:53,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:01:53,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 04:01:53,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:53,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:53,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:01:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:01:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 04:01:53,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:53,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:01:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:53,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:53,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:53,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:01:53,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:53,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:01:53,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:53,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:53,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:54,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:01:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:54,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:54,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:54,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:01:54,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:54,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 04:01:54,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:54,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:54,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:54,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:54,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:01:54,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:54,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:01:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:54,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:54,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:54,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 04:01:54,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:54,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 04:01:54,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:54,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:01:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:01:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 04:01:54,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:54,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-14 04:01:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:54,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:54,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:54,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:01:54,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:54,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:01:54,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:54,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:54,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:54,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 04:01:54,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:54,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 250 proven. 73 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-14 04:01:54,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357120293] [2020-10-14 04:01:54,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:01:54,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:01:54,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695951111] [2020-10-14 04:01:54,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:01:54,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:01:54,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:01:54,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:01:54,611 INFO L87 Difference]: Start difference. First operand 19337 states and 24026 transitions. Second operand 7 states.