/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_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:04:04,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:04:04,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:04:04,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:04:04,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:04:04,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:04:04,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:04:04,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:04:04,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:04:04,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:04:04,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:04:04,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:04:04,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:04:04,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:04:04,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:04:04,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:04:04,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:04:04,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:04:04,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:04:04,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:04:04,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:04:04,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:04:04,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:04:04,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:04:04,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:04:04,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:04:04,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:04:04,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:04:04,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:04:04,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:04:04,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:04:04,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:04:04,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:04:04,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:04:04,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:04:04,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:04:04,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:04:04,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:04:04,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:04:04,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:04:04,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:04:04,204 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:04:04,261 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:04:04,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:04:04,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:04:04,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:04:04,267 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:04:04,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:04:04,269 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:04:04,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:04:04,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:04:04,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:04:04,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:04:04,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:04:04,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:04:04,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:04:04,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:04:04,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:04:04,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:04:04,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:04:04,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:04:04,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:04:04,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:04:04,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:04:04,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:04:04,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:04:04,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:04:04,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:04:04,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:04:04,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:04:04,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:04:04,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:04:04,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:04:04,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:04:04,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:04:04,660 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:04:04,660 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:04:04,661 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label39.c [2020-10-14 04:04:04,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd6f2d18f/7c1ed917657f45758886dad5d4e1acde/FLAG42d2ef69a [2020-10-14 04:04:05,475 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:04:05,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label39.c [2020-10-14 04:04:05,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd6f2d18f/7c1ed917657f45758886dad5d4e1acde/FLAG42d2ef69a [2020-10-14 04:04:05,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd6f2d18f/7c1ed917657f45758886dad5d4e1acde [2020-10-14 04:04:05,545 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:04:05,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:04:05,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:04:05,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:04:05,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:04:05,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:04:05" (1/1) ... [2020-10-14 04:04:05,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b40a169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:04:05, skipping insertion in model container [2020-10-14 04:04:05,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:04:05" (1/1) ... [2020-10-14 04:04:05,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:04:05,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:04:06,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:04:06,987 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:04:07,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:04:07,491 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:04:07,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:04:07 WrapperNode [2020-10-14 04:04:07,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:04:07,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:04:07,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:04:07,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:04:07,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:04:07" (1/1) ... [2020-10-14 04:04:07,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:04:07" (1/1) ... [2020-10-14 04:04:07,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:04:07" (1/1) ... [2020-10-14 04:04:07,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:04:07" (1/1) ... [2020-10-14 04:04:07,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:04:07" (1/1) ... [2020-10-14 04:04:07,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:04:07" (1/1) ... [2020-10-14 04:04:07,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:04:07" (1/1) ... [2020-10-14 04:04:07,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:04:07,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:04:07,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:04:07,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:04:07,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:04:07" (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 04:04:08,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:04:08,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:04:08,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:04:08,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:04:08,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:04:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:04:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:04:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:04:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:04:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:04:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:04:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:04:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:04:17,061 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:04:17,062 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:04:17,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:04:17 BoogieIcfgContainer [2020-10-14 04:04:17,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:04:17,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:04:17,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:04:17,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:04:17,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:04:05" (1/3) ... [2020-10-14 04:04:17,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c51ecd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:04:17, skipping insertion in model container [2020-10-14 04:04:17,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:04:07" (2/3) ... [2020-10-14 04:04:17,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c51ecd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:04:17, skipping insertion in model container [2020-10-14 04:04:17,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:04:17" (3/3) ... [2020-10-14 04:04:17,093 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label39.c [2020-10-14 04:04:17,107 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:04:17,119 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:04:17,133 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:04:17,162 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:04:17,163 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:04:17,163 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:04:17,163 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:04:17,163 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:04:17,163 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:04:17,163 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:04:17,164 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:04:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:04:17,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 04:04:17,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:17,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:04:17,226 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:17,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:17,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1747259231, now seen corresponding path program 1 times [2020-10-14 04:04:17,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:17,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743227742] [2020-10-14 04:04:17,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:17,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:17,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:17,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:04:17,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:17,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-14 04:04:17,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:17,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:17,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:04:17,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:04:17,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:04:17,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:04:18,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:04:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:18,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:18,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:18,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:04:18,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:18,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:04:18,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:18,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:18,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:04:18,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:18,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:04:18,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:04:18,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743227742] [2020-10-14 04:04:18,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:04:18,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:04:18,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132416848] [2020-10-14 04:04:18,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:04:18,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:04:18,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:04:18,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:04:18,155 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 5 states. [2020-10-14 04:04:30,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:04:30,728 INFO L93 Difference]: Finished difference Result 2169 states and 4016 transitions. [2020-10-14 04:04:30,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:04:30,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-14 04:04:30,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:04:30,779 INFO L225 Difference]: With dead ends: 2169 [2020-10-14 04:04:30,780 INFO L226 Difference]: Without dead ends: 1472 [2020-10-14 04:04:30,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:04:30,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-10-14 04:04:30,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1443. [2020-10-14 04:04:30,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-10-14 04:04:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2111 transitions. [2020-10-14 04:04:30,973 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2111 transitions. Word has length 69 [2020-10-14 04:04:30,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:04:30,974 INFO L479 AbstractCegarLoop]: Abstraction has 1443 states and 2111 transitions. [2020-10-14 04:04:30,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:04:30,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2111 transitions. [2020-10-14 04:04:30,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 04:04:30,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:30,984 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:04:30,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:04:30,985 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:30,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:30,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1044902793, now seen corresponding path program 1 times [2020-10-14 04:04:30,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:30,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203444222] [2020-10-14 04:04:30,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:31,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:31,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:31,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:34,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:34,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:34,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 04:04:34,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:04:34,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3181 [2020-10-14 04:04:34,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:34,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:04:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:04:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 04:04:34,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:04:34,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:04:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:34,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:34,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:34,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:04:34,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:34,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:04:34,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:34,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:34,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:04:34,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:34,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:04:34,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:34,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:04:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:34,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:34,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:34,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:04:34,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:34,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 04:04:34,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:34,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:34,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:04:34,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:34,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:04:34,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:04:34,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203444222] [2020-10-14 04:04:34,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:04:34,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:04:34,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993984530] [2020-10-14 04:04:34,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:04:34,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:04:34,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:04:34,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:04:34,588 INFO L87 Difference]: Start difference. First operand 1443 states and 2111 transitions. Second operand 5 states. [2020-10-14 04:04:46,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:04:46,536 INFO L93 Difference]: Finished difference Result 4206 states and 6198 transitions. [2020-10-14 04:04:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:04:46,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-14 04:04:46,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:04:46,559 INFO L225 Difference]: With dead ends: 4206 [2020-10-14 04:04:46,560 INFO L226 Difference]: Without dead ends: 2769 [2020-10-14 04:04:46,566 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 04:04:46,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2020-10-14 04:04:46,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2765. [2020-10-14 04:04:46,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2765 states. [2020-10-14 04:04:46,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2765 states to 2765 states and 3651 transitions. [2020-10-14 04:04:46,673 INFO L78 Accepts]: Start accepts. Automaton has 2765 states and 3651 transitions. Word has length 140 [2020-10-14 04:04:46,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:04:46,674 INFO L479 AbstractCegarLoop]: Abstraction has 2765 states and 3651 transitions. [2020-10-14 04:04:46,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:04:46,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2765 states and 3651 transitions. [2020-10-14 04:04:46,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 04:04:46,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:46,678 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:04:46,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:04:46,679 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:46,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:46,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1036271817, now seen corresponding path program 1 times [2020-10-14 04:04:46,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:46,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597619384] [2020-10-14 04:04:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:46,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:46,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:47,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:50,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:50,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 04:04:50,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:04:50,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4254 [2020-10-14 04:04:50,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:50,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:50,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:04:50,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:04:50,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 04:04:50,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:51,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:04:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:51,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:51,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:51,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:04:51,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:51,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:04:51,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:51,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:04:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:04:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:51,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:04:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:51,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:51,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:51,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:04:51,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:51,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 04:04:51,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:51,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:51,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:04:51,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:51,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:04:51,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:04:51,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597619384] [2020-10-14 04:04:51,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:04:51,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:04:51,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771642088] [2020-10-14 04:04:51,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:04:51,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:04:51,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:04:51,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:04:51,272 INFO L87 Difference]: Start difference. First operand 2765 states and 3651 transitions. Second operand 5 states. [2020-10-14 04:05:05,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:05:05,783 INFO L93 Difference]: Finished difference Result 5540 states and 7662 transitions. [2020-10-14 04:05:05,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:05:05,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-14 04:05:05,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:05:05,806 INFO L225 Difference]: With dead ends: 5540 [2020-10-14 04:05:05,807 INFO L226 Difference]: Without dead ends: 3662 [2020-10-14 04:05:05,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:05:05,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2020-10-14 04:05:05,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3656. [2020-10-14 04:05:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3656 states. [2020-10-14 04:05:05,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 4735 transitions. [2020-10-14 04:05:05,946 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 4735 transitions. Word has length 143 [2020-10-14 04:05:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:05:05,948 INFO L479 AbstractCegarLoop]: Abstraction has 3656 states and 4735 transitions. [2020-10-14 04:05:05,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:05:05,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 4735 transitions. [2020-10-14 04:05:05,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 04:05:05,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:05:05,961 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:05:05,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:05:05,962 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:05:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:05:05,962 INFO L82 PathProgramCache]: Analyzing trace with hash -192491641, now seen corresponding path program 1 times [2020-10-14 04:05:05,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:05:05,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166916930] [2020-10-14 04:05:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:05:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:06,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:06,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:06,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:07,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:07,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 04:05:07,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:05:07,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1594 [2020-10-14 04:05:07,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:07,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:07,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:07,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 04:05:07,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 04:05:07,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:07,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:07,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:07,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:07,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:07,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:07,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:05:07,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:07,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:07,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:07,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:05:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:07,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:07,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:07,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:05:07,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 04:05:07,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:07,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:05:07,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:05:07,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166916930] [2020-10-14 04:05:07,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:05:07,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:05:07,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397456014] [2020-10-14 04:05:07,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:05:07,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:07,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:05:07,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:05:07,925 INFO L87 Difference]: Start difference. First operand 3656 states and 4735 transitions. Second operand 5 states. [2020-10-14 04:05:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:05:27,282 INFO L93 Difference]: Finished difference Result 10402 states and 13696 transitions. [2020-10-14 04:05:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:05:27,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-14 04:05:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:05:27,332 INFO L225 Difference]: With dead ends: 10402 [2020-10-14 04:05:27,332 INFO L226 Difference]: Without dead ends: 6752 [2020-10-14 04:05:27,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:05:27,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6752 states. [2020-10-14 04:05:27,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6752 to 6727. [2020-10-14 04:05:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6727 states. [2020-10-14 04:05:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6727 states to 6727 states and 8429 transitions. [2020-10-14 04:05:27,558 INFO L78 Accepts]: Start accepts. Automaton has 6727 states and 8429 transitions. Word has length 148 [2020-10-14 04:05:27,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:05:27,559 INFO L479 AbstractCegarLoop]: Abstraction has 6727 states and 8429 transitions. [2020-10-14 04:05:27,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:05:27,559 INFO L276 IsEmpty]: Start isEmpty. Operand 6727 states and 8429 transitions. [2020-10-14 04:05:27,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 04:05:27,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:05:27,563 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:05:27,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:05:27,564 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:05:27,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:05:27,565 INFO L82 PathProgramCache]: Analyzing trace with hash 786833419, now seen corresponding path program 1 times [2020-10-14 04:05:27,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:05:27,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238954163] [2020-10-14 04:05:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:05:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:27,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:27,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:28,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:28,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 04:05:28,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:05:28,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 907 [2020-10-14 04:05:28,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:28,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 04:05:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 04:05:28,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:28,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:28,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:28,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:28,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:28,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:05:28,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:28,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:28,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:05:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:28,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:28,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:28,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:05:28,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:28,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 04:05:28,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:28,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 04:05:28,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:05:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:05:28,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238954163] [2020-10-14 04:05:28,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:05:28,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:05:28,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41979077] [2020-10-14 04:05:28,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:05:28,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:28,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:05:28,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:05:28,893 INFO L87 Difference]: Start difference. First operand 6727 states and 8429 transitions. Second operand 5 states. [2020-10-14 04:05:46,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:05:46,663 INFO L93 Difference]: Finished difference Result 14345 states and 18516 transitions. [2020-10-14 04:05:46,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:05:46,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-14 04:05:46,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:05:46,713 INFO L225 Difference]: With dead ends: 14345 [2020-10-14 04:05:46,713 INFO L226 Difference]: Without dead ends: 8944 [2020-10-14 04:05:46,730 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 04:05:46,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8944 states. [2020-10-14 04:05:46,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8944 to 8936. [2020-10-14 04:05:46,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8936 states. [2020-10-14 04:05:46,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8936 states to 8936 states and 10959 transitions. [2020-10-14 04:05:46,951 INFO L78 Accepts]: Start accepts. Automaton has 8936 states and 10959 transitions. Word has length 166 [2020-10-14 04:05:46,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:05:46,952 INFO L479 AbstractCegarLoop]: Abstraction has 8936 states and 10959 transitions. [2020-10-14 04:05:46,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:05:46,952 INFO L276 IsEmpty]: Start isEmpty. Operand 8936 states and 10959 transitions. [2020-10-14 04:05:46,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 04:05:46,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:05:46,957 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:05:46,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:05:46,957 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:05:46,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:05:46,958 INFO L82 PathProgramCache]: Analyzing trace with hash -681877229, now seen corresponding path program 1 times [2020-10-14 04:05:46,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:05:46,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308812718] [2020-10-14 04:05:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:05:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:47,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:47,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:47,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:47,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:47,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:49,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:52,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:52,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 04:05:52,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:05:52,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:05:52,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:52,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:52,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 04:05:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:05:52,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:52,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:52,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:52,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:52,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:52,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:05:52,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:52,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:52,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:52,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:05:52,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:05:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:52,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:52,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:52,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:05:52,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:52,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 04:05:52,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:52,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 04:05:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:05:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:05:52,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308812718] [2020-10-14 04:05:52,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:05:52,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:05:52,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982181572] [2020-10-14 04:05:52,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:05:52,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:52,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:05:52,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:05:52,518 INFO L87 Difference]: Start difference. First operand 8936 states and 10959 transitions. Second operand 5 states. [2020-10-14 04:06:08,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:06:08,813 INFO L93 Difference]: Finished difference Result 23565 states and 29542 transitions. [2020-10-14 04:06:08,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:06:08,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 04:06:08,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:06:08,888 INFO L225 Difference]: With dead ends: 23565 [2020-10-14 04:06:08,889 INFO L226 Difference]: Without dead ends: 14635 [2020-10-14 04:06:08,911 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 04:06:08,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14635 states. [2020-10-14 04:06:09,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14635 to 14198. [2020-10-14 04:06:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14198 states. [2020-10-14 04:06:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14198 states to 14198 states and 17146 transitions. [2020-10-14 04:06:09,220 INFO L78 Accepts]: Start accepts. Automaton has 14198 states and 17146 transitions. Word has length 170 [2020-10-14 04:06:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:06:09,222 INFO L479 AbstractCegarLoop]: Abstraction has 14198 states and 17146 transitions. [2020-10-14 04:06:09,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:06:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand 14198 states and 17146 transitions. [2020-10-14 04:06:09,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 04:06:09,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:06:09,228 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:06:09,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:06:09,229 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:06:09,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:06:09,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1181705903, now seen corresponding path program 1 times [2020-10-14 04:06:09,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:06:09,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773459862] [2020-10-14 04:06:09,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:06:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:09,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:09,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:10,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:10,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 04:06:10,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:06:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1436 [2020-10-14 04:06:10,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:10,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:06:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 04:06:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 04:06:10,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:10,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:06:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:10,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:10,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:10,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:06:10,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:10,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:06:10,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:10,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:06:10,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:10,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:06:10,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:06:10,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:06:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:10,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:11,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:11,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:06:11,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:11,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 04:06:11,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:11,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:11,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:06:11,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:06:11,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773459862] [2020-10-14 04:06:11,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:06:11,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:06:11,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501758090] [2020-10-14 04:06:11,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:06:11,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:06:11,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:06:11,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:06:11,243 INFO L87 Difference]: Start difference. First operand 14198 states and 17146 transitions. Second operand 5 states. [2020-10-14 04:06:28,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:06:28,349 INFO L93 Difference]: Finished difference Result 34077 states and 42234 transitions. [2020-10-14 04:06:28,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:06:28,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-14 04:06:28,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:06:28,428 INFO L225 Difference]: With dead ends: 34077 [2020-10-14 04:06:28,428 INFO L226 Difference]: Without dead ends: 19885 [2020-10-14 04:06:28,461 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 04:06:28,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19885 states. [2020-10-14 04:06:28,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19885 to 19881. [2020-10-14 04:06:28,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19881 states. [2020-10-14 04:06:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19881 states to 19881 states and 24124 transitions. [2020-10-14 04:06:28,897 INFO L78 Accepts]: Start accepts. Automaton has 19881 states and 24124 transitions. Word has length 171 [2020-10-14 04:06:28,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:06:28,898 INFO L479 AbstractCegarLoop]: Abstraction has 19881 states and 24124 transitions. [2020-10-14 04:06:28,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:06:28,898 INFO L276 IsEmpty]: Start isEmpty. Operand 19881 states and 24124 transitions. [2020-10-14 04:06:28,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-14 04:06:28,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:06:28,906 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:06:28,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:06:28,906 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:06:28,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:06:28,907 INFO L82 PathProgramCache]: Analyzing trace with hash -548871215, now seen corresponding path program 1 times [2020-10-14 04:06:28,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:06:28,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112233179] [2020-10-14 04:06:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:06:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:29,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:29,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:30,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:31,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:31,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 04:06:31,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:06:31,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2028 [2020-10-14 04:06:31,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:31,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:31,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:06:31,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-14 04:06:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 04:06:31,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:31,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:06:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:31,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:31,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:06:31,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:31,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:06:31,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:31,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:06:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:06:31,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:06:31,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:06:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:31,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:31,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:31,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 04:06:31,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:31,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 04:06:31,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:31,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:31,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:31,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:31,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 04:06:31,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:06:31,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112233179] [2020-10-14 04:06:31,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:06:31,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:06:31,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414405142] [2020-10-14 04:06:31,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:06:31,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:06:31,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:06:31,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:06:31,474 INFO L87 Difference]: Start difference. First operand 19881 states and 24124 transitions. Second operand 5 states. [2020-10-14 04:06:52,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:06:52,106 INFO L93 Difference]: Finished difference Result 46346 states and 57556 transitions. [2020-10-14 04:06:52,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:06:52,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-14 04:06:52,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:06:52,253 INFO L225 Difference]: With dead ends: 46346 [2020-10-14 04:06:52,253 INFO L226 Difference]: Without dead ends: 26471 [2020-10-14 04:06:52,307 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 04:06:52,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26471 states. [2020-10-14 04:06:52,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26471 to 26458. [2020-10-14 04:06:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26458 states. [2020-10-14 04:06:52,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26458 states to 26458 states and 32264 transitions. [2020-10-14 04:06:52,851 INFO L78 Accepts]: Start accepts. Automaton has 26458 states and 32264 transitions. Word has length 197 [2020-10-14 04:06:52,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:06:52,851 INFO L479 AbstractCegarLoop]: Abstraction has 26458 states and 32264 transitions. [2020-10-14 04:06:52,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:06:52,852 INFO L276 IsEmpty]: Start isEmpty. Operand 26458 states and 32264 transitions. [2020-10-14 04:06:52,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 04:06:52,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:06:52,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:06:52,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:06:52,860 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:06:52,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:06:52,860 INFO L82 PathProgramCache]: Analyzing trace with hash 27960630, now seen corresponding path program 1 times [2020-10-14 04:06:52,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:06:52,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293682622] [2020-10-14 04:06:52,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:06:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:52,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:53,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:53,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:53,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:55,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:55,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 04:06:55,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:06:55,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2791 [2020-10-14 04:06:55,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:55,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:55,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-14 04:06:55,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:06:55,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:55,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:06:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:55,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:55,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:55,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:06:55,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:55,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:06:55,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:55,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:06:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:55,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:06:55,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:55,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:06:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:55,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:56,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:56,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 04:06:56,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:56,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 04:06:56,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:56,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:56,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:56,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-14 04:06:56,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:06:56,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:06:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:06:56,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293682622] [2020-10-14 04:06:56,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:06:56,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:06:56,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721442719] [2020-10-14 04:06:56,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:06:56,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:06:56,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:06:56,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:06:56,269 INFO L87 Difference]: Start difference. First operand 26458 states and 32264 transitions. Second operand 5 states. [2020-10-14 04:07:17,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:07:17,761 INFO L93 Difference]: Finished difference Result 60794 states and 75729 transitions. [2020-10-14 04:07:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:07:17,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-14 04:07:17,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:07:17,882 INFO L225 Difference]: With dead ends: 60794 [2020-10-14 04:07:17,882 INFO L226 Difference]: Without dead ends: 34342 [2020-10-14 04:07:17,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:07:17,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34342 states. [2020-10-14 04:07:18,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34342 to 34329. [2020-10-14 04:07:18,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34329 states. [2020-10-14 04:07:18,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34329 states to 34329 states and 41053 transitions. [2020-10-14 04:07:18,523 INFO L78 Accepts]: Start accepts. Automaton has 34329 states and 41053 transitions. Word has length 213 [2020-10-14 04:07:18,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:07:18,523 INFO L479 AbstractCegarLoop]: Abstraction has 34329 states and 41053 transitions. [2020-10-14 04:07:18,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:07:18,523 INFO L276 IsEmpty]: Start isEmpty. Operand 34329 states and 41053 transitions. [2020-10-14 04:07:18,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 04:07:18,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:07:18,532 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:07:18,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:07:18,532 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:07:18,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:07:18,533 INFO L82 PathProgramCache]: Analyzing trace with hash -493488937, now seen corresponding path program 1 times [2020-10-14 04:07:18,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:07:18,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677276650] [2020-10-14 04:07:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:07:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:18,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:18,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:18,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:23,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:23,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 04:07:23,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:07:23,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 04:07:23,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:23,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:07:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:07:23,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:07:23,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:07:23,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:07:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:23,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:23,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:23,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:07:23,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:23,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:07:23,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:23,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:23,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:07:23,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:23,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:07:23,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:23,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:07:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:23,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:23,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:23,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:07:23,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:23,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 04:07:23,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:23,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:07:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:07:23,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:23,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 04:07:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:24,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:24,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:24,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:07:24,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:24,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 04:07:24,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:24,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:24,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:07:24,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:07:24,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:07:24,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:24,422 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:07:24,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677276650] [2020-10-14 04:07:24,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:07:24,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:07:24,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527972316] [2020-10-14 04:07:24,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:07:24,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:07:24,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:07:24,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:07:24,426 INFO L87 Difference]: Start difference. First operand 34329 states and 41053 transitions. Second operand 7 states. [2020-10-14 04:07:48,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:07:48,167 INFO L93 Difference]: Finished difference Result 62126 states and 75235 transitions. [2020-10-14 04:07:48,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:07:48,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-14 04:07:48,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:07:48,264 INFO L225 Difference]: With dead ends: 62126 [2020-10-14 04:07:48,265 INFO L226 Difference]: Without dead ends: 20777 [2020-10-14 04:07:48,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:07:48,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20777 states.