/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/Problem15_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:38:35,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:38:35,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:38:35,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:38:35,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:38:35,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:38:35,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:38:35,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:38:35,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:38:35,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:38:35,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:38:35,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:38:35,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:38:35,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:38:35,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:38:35,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:38:35,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:38:35,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:38:35,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:38:35,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:38:35,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:38:35,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:38:35,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:38:35,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:38:35,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:38:35,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:38:35,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:38:35,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:38:35,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:38:35,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:38:35,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:38:35,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:38:35,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:38:35,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:38:35,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:38:35,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:38:35,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:38:35,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:38:35,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:38:35,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:38:35,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:38:35,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 03:38:35,332 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:38:35,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:38:35,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:38:35,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:38:35,334 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:38:35,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:38:35,335 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:38:35,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:38:35,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:38:35,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:38:35,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:38:35,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:38:35,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:38:35,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:38:35,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:38:35,338 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:38:35,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:38:35,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:38:35,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:38:35,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:38:35,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:38:35,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:38:35,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:38:35,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:38:35,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:38:35,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:38:35,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:38:35,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:38:35,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:38:35,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:38:35,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:38:35,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:38:35,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:38:35,701 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:38:35,701 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:38:35,702 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label59.c [2020-10-14 03:38:35,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb3031f93/2cfc693370da4c33ac95e4eb6ce2ebd0/FLAGa2ab7355a [2020-10-14 03:38:36,542 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:38:36,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label59.c [2020-10-14 03:38:36,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb3031f93/2cfc693370da4c33ac95e4eb6ce2ebd0/FLAGa2ab7355a [2020-10-14 03:38:36,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb3031f93/2cfc693370da4c33ac95e4eb6ce2ebd0 [2020-10-14 03:38:36,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:38:36,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:38:36,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:38:36,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:38:36,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:38:36,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:38:36" (1/1) ... [2020-10-14 03:38:36,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a0aa91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:36, skipping insertion in model container [2020-10-14 03:38:36,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:38:36" (1/1) ... [2020-10-14 03:38:36,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:38:36,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:38:37,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:38:37,908 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:38:38,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:38:38,313 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:38:38,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:38 WrapperNode [2020-10-14 03:38:38,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:38:38,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:38:38,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:38:38,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:38:38,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:38" (1/1) ... [2020-10-14 03:38:38,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:38" (1/1) ... [2020-10-14 03:38:38,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:38" (1/1) ... [2020-10-14 03:38:38,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:38" (1/1) ... [2020-10-14 03:38:38,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:38" (1/1) ... [2020-10-14 03:38:38,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:38" (1/1) ... [2020-10-14 03:38:38,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:38" (1/1) ... [2020-10-14 03:38:38,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:38:38,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:38:38,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:38:38,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:38:38,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:38:38,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:38:38,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:38:38,652 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:38:38,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:38:38,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:38:38,653 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:38:38,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:38:38,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:38:38,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:38:38,655 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:38:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:38:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:38:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:38:44,836 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:38:44,836 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:38:44,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:38:44 BoogieIcfgContainer [2020-10-14 03:38:44,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:38:44,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:38:44,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:38:44,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:38:44,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:38:36" (1/3) ... [2020-10-14 03:38:44,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1853690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:38:44, skipping insertion in model container [2020-10-14 03:38:44,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:38" (2/3) ... [2020-10-14 03:38:44,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1853690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:38:44, skipping insertion in model container [2020-10-14 03:38:44,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:38:44" (3/3) ... [2020-10-14 03:38:44,858 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label59.c [2020-10-14 03:38:44,870 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:38:44,888 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:38:44,922 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:38:44,984 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:38:44,984 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:38:44,984 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:38:44,984 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:38:44,984 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:38:44,985 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:38:44,985 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:38:44,985 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:38:45,032 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:38:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 03:38:45,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:45,049 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] [2020-10-14 03:38:45,049 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:45,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:45,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1109513128, now seen corresponding path program 1 times [2020-10-14 03:38:45,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:45,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666795088] [2020-10-14 03:38:45,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:45,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:45,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:45,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 03:38:45,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:45,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-14 03:38:45,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:45,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:38:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:38:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 03:38:45,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:38:45,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:45,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:45,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:45,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:45,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:45,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 03:38:45,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:45,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:38:45,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:38:45,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666795088] [2020-10-14 03:38:45,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:38:45,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:38:45,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998559017] [2020-10-14 03:38:45,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:38:45,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:45,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:38:45,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:38:45,986 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:38:54,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:54,086 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-14 03:38:54,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:38:54,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-14 03:38:54,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:54,114 INFO L225 Difference]: With dead ends: 1224 [2020-10-14 03:38:54,115 INFO L226 Difference]: Without dead ends: 708 [2020-10-14 03:38:54,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:38:54,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-14 03:38:54,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-14 03:38:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-14 03:38:54,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-14 03:38:54,239 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 60 [2020-10-14 03:38:54,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:54,240 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-14 03:38:54,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:38:54,240 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-14 03:38:54,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 03:38:54,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:54,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:38:54,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:38:54,249 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:54,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:54,249 INFO L82 PathProgramCache]: Analyzing trace with hash -767759721, now seen corresponding path program 1 times [2020-10-14 03:38:54,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:54,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628106992] [2020-10-14 03:38:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:54,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:54,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:55,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:55,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:55,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 03:38:55,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:38:55,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1616 [2020-10-14 03:38:55,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:55,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:55,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:55,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:38:55,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 03:38:55,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:38:56,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:56,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:56,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:56,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:56,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:56,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:38:56,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:56,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:56,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:56,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:56,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:56,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:56,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:56,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:56,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:56,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:38:56,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:56,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 03:38:56,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:56,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:56,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:56,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:56,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:38:56,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:56,206 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:38:56,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628106992] [2020-10-14 03:38:56,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:56,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:38:56,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536994315] [2020-10-14 03:38:56,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:38:56,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:56,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:38:56,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:38:56,212 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 5 states. [2020-10-14 03:39:08,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:08,257 INFO L93 Difference]: Finished difference Result 1395 states and 2299 transitions. [2020-10-14 03:39:08,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:08,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-14 03:39:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:08,267 INFO L225 Difference]: With dead ends: 1395 [2020-10-14 03:39:08,268 INFO L226 Difference]: Without dead ends: 1022 [2020-10-14 03:39:08,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:39:08,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2020-10-14 03:39:08,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1016. [2020-10-14 03:39:08,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-10-14 03:39:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1467 transitions. [2020-10-14 03:39:08,329 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1467 transitions. Word has length 130 [2020-10-14 03:39:08,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:08,330 INFO L479 AbstractCegarLoop]: Abstraction has 1016 states and 1467 transitions. [2020-10-14 03:39:08,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:08,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1467 transitions. [2020-10-14 03:39:08,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 03:39:08,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:08,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:08,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:39:08,338 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:08,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:08,338 INFO L82 PathProgramCache]: Analyzing trace with hash 687837779, now seen corresponding path program 1 times [2020-10-14 03:39:08,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:08,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016930746] [2020-10-14 03:39:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:08,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:08,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:09,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:09,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:09,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 03:39:09,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:39:09,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1613 [2020-10-14 03:39:09,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:09,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:09,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 03:39:09,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 03:39:09,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:10,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:10,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:10,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:10,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:10,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:39:10,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:10,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:10,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:10,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:10,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:10,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:10,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:10,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:10,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:10,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:39:10,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:10,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 03:39:10,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:10,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:10,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:10,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:10,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 03:39:10,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:39:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:10,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016930746] [2020-10-14 03:39:10,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:10,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:39:10,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140595614] [2020-10-14 03:39:10,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:39:10,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:10,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:39:10,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:39:10,363 INFO L87 Difference]: Start difference. First operand 1016 states and 1467 transitions. Second operand 5 states. [2020-10-14 03:39:18,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:18,841 INFO L93 Difference]: Finished difference Result 2371 states and 3550 transitions. [2020-10-14 03:39:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:18,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-14 03:39:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:18,863 INFO L225 Difference]: With dead ends: 2371 [2020-10-14 03:39:18,863 INFO L226 Difference]: Without dead ends: 1675 [2020-10-14 03:39:18,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:39:18,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2020-10-14 03:39:18,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1668. [2020-10-14 03:39:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1668 states. [2020-10-14 03:39:18,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2423 transitions. [2020-10-14 03:39:18,944 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2423 transitions. Word has length 132 [2020-10-14 03:39:18,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:18,948 INFO L479 AbstractCegarLoop]: Abstraction has 1668 states and 2423 transitions. [2020-10-14 03:39:18,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:18,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2423 transitions. [2020-10-14 03:39:18,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 03:39:18,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:18,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:18,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:39:18,969 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:18,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:18,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1093547020, now seen corresponding path program 1 times [2020-10-14 03:39:18,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:18,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818382555] [2020-10-14 03:39:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:19,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:19,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:19,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:19,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:21,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:21,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:39:21,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:39:21,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2694 [2020-10-14 03:39:21,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:21,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:21,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 03:39:21,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 03:39:21,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:21,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:21,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:21,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:21,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:21,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:21,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:39:21,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:21,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:21,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:21,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:21,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:21,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:21,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:21,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:21,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:21,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:39:21,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:21,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 03:39:21,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:21,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:39:21,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:22,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818382555] [2020-10-14 03:39:22,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:22,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:39:22,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199558894] [2020-10-14 03:39:22,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:39:22,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:22,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:39:22,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:39:22,008 INFO L87 Difference]: Start difference. First operand 1668 states and 2423 transitions. Second operand 5 states. [2020-10-14 03:39:32,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:32,021 INFO L93 Difference]: Finished difference Result 3030 states and 4581 transitions. [2020-10-14 03:39:32,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:32,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-14 03:39:32,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:32,037 INFO L225 Difference]: With dead ends: 3030 [2020-10-14 03:39:32,037 INFO L226 Difference]: Without dead ends: 1991 [2020-10-14 03:39:32,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:39:32,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2020-10-14 03:39:32,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1983. [2020-10-14 03:39:32,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1983 states. [2020-10-14 03:39:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 2933 transitions. [2020-10-14 03:39:32,115 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 2933 transitions. Word has length 159 [2020-10-14 03:39:32,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:32,116 INFO L479 AbstractCegarLoop]: Abstraction has 1983 states and 2933 transitions. [2020-10-14 03:39:32,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:32,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 2933 transitions. [2020-10-14 03:39:32,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-14 03:39:32,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:32,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:32,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:39:32,122 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:32,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:32,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1278749795, now seen corresponding path program 1 times [2020-10-14 03:39:32,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:32,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553234637] [2020-10-14 03:39:32,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:32,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:32,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:32,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-14 03:39:32,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:32,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-14 03:39:32,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:32,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:39:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:39:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 03:39:32,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:32,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:32,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:32,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:32,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:32,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:32,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:39:32,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:32,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:32,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:32,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:32,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:39:32,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:32,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:32,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:32,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:32,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:39:32,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:32,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 03:39:32,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:32,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:32,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 03:39:32,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:39:32,924 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:32,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553234637] [2020-10-14 03:39:32,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:39:32,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:39:32,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111825884] [2020-10-14 03:39:32,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:39:32,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:32,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:39:32,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:39:32,931 INFO L87 Difference]: Start difference. First operand 1983 states and 2933 transitions. Second operand 7 states. [2020-10-14 03:39:43,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:43,401 INFO L93 Difference]: Finished difference Result 4659 states and 7158 transitions. [2020-10-14 03:39:43,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:39:43,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-10-14 03:39:43,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:43,425 INFO L225 Difference]: With dead ends: 4659 [2020-10-14 03:39:43,425 INFO L226 Difference]: Without dead ends: 2989 [2020-10-14 03:39:43,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:39:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-10-14 03:39:43,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2956. [2020-10-14 03:39:43,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2956 states. [2020-10-14 03:39:43,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 3937 transitions. [2020-10-14 03:39:43,537 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 3937 transitions. Word has length 163 [2020-10-14 03:39:43,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:43,537 INFO L479 AbstractCegarLoop]: Abstraction has 2956 states and 3937 transitions. [2020-10-14 03:39:43,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:39:43,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 3937 transitions. [2020-10-14 03:39:43,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 03:39:43,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:43,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:43,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:39:43,541 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:43,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:43,542 INFO L82 PathProgramCache]: Analyzing trace with hash -457386156, now seen corresponding path program 1 times [2020-10-14 03:39:43,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:43,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198214669] [2020-10-14 03:39:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:43,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:43,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:44,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:44,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 03:39:44,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:39:44,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 852 [2020-10-14 03:39:44,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:44,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:44,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:44,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 03:39:44,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 03:39:44,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:44,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:44,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:44,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:44,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:44,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:44,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:39:44,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:44,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:44,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:44,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:44,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:44,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:44,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:39:44,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:44,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 03:39:44,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:44,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:44,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:44,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:39:44,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:44,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198214669] [2020-10-14 03:39:44,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:44,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:39:44,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415580539] [2020-10-14 03:39:44,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:39:44,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:44,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:39:44,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:39:44,747 INFO L87 Difference]: Start difference. First operand 2956 states and 3937 transitions. Second operand 5 states. [2020-10-14 03:39:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:54,605 INFO L93 Difference]: Finished difference Result 6848 states and 9610 transitions. [2020-10-14 03:39:54,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:54,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-14 03:39:54,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:54,627 INFO L225 Difference]: With dead ends: 6848 [2020-10-14 03:39:54,627 INFO L226 Difference]: Without dead ends: 4207 [2020-10-14 03:39:54,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:39:54,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2020-10-14 03:39:54,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 4207. [2020-10-14 03:39:54,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4207 states. [2020-10-14 03:39:54,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4207 states to 4207 states and 5565 transitions. [2020-10-14 03:39:54,744 INFO L78 Accepts]: Start accepts. Automaton has 4207 states and 5565 transitions. Word has length 176 [2020-10-14 03:39:54,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:54,745 INFO L479 AbstractCegarLoop]: Abstraction has 4207 states and 5565 transitions. [2020-10-14 03:39:54,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:54,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4207 states and 5565 transitions. [2020-10-14 03:39:54,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 03:39:54,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:54,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:54,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:39:54,749 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:54,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:54,750 INFO L82 PathProgramCache]: Analyzing trace with hash 454793153, now seen corresponding path program 1 times [2020-10-14 03:39:54,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:54,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703708579] [2020-10-14 03:39:54,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:54,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:55,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:55,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:55,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 03:39:55,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:39:55,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1156 [2020-10-14 03:39:55,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:55,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:55,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:55,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 03:39:55,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 03:39:55,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:56,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:56,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:56,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:56,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:56,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:56,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:39:56,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:56,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:56,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:56,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:56,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:56,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:56,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:39:56,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:56,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 03:39:56,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:56,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:39:56,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:56,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703708579] [2020-10-14 03:39:56,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:56,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:39:56,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15591520] [2020-10-14 03:39:56,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:39:56,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:56,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:39:56,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:39:56,308 INFO L87 Difference]: Start difference. First operand 4207 states and 5565 transitions. Second operand 5 states. [2020-10-14 03:40:07,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:07,152 INFO L93 Difference]: Finished difference Result 11243 states and 15408 transitions. [2020-10-14 03:40:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:40:07,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-14 03:40:07,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:07,188 INFO L225 Difference]: With dead ends: 11243 [2020-10-14 03:40:07,188 INFO L226 Difference]: Without dead ends: 7351 [2020-10-14 03:40:07,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:40:07,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7351 states. [2020-10-14 03:40:07,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7351 to 7333. [2020-10-14 03:40:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7333 states. [2020-10-14 03:40:07,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7333 states to 7333 states and 9753 transitions. [2020-10-14 03:40:07,467 INFO L78 Accepts]: Start accepts. Automaton has 7333 states and 9753 transitions. Word has length 189 [2020-10-14 03:40:07,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:07,468 INFO L479 AbstractCegarLoop]: Abstraction has 7333 states and 9753 transitions. [2020-10-14 03:40:07,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:40:07,468 INFO L276 IsEmpty]: Start isEmpty. Operand 7333 states and 9753 transitions. [2020-10-14 03:40:07,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-14 03:40:07,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:07,480 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, 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] [2020-10-14 03:40:07,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:40:07,481 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:07,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:07,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1655967254, now seen corresponding path program 1 times [2020-10-14 03:40:07,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:07,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940565223] [2020-10-14 03:40:07,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:07,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:07,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:08,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:08,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:09,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:12,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:12,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-14 03:40:12,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 03:40:12,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 03:40:12,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:12,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:12,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-14 03:40:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:40:12,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:12,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:12,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:12,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:12,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:12,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:12,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:40:12,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:12,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:12,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:12,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:40:12,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:12,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:12,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:12,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:40:12,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:12,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 03:40:12,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:12,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:12,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:12,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:12,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 03:40:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:12,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:12,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:12,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 03:40:12,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:12,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 03:40:12,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:12,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:12,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:12,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 03:40:12,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:40:12,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 03:40:13,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940565223] [2020-10-14 03:40:13,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:40:13,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:40:13,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830845507] [2020-10-14 03:40:13,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:40:13,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:13,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:40:13,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:40:13,004 INFO L87 Difference]: Start difference. First operand 7333 states and 9753 transitions. Second operand 5 states. [2020-10-14 03:40:20,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:20,290 INFO L93 Difference]: Finished difference Result 19001 states and 26142 transitions. [2020-10-14 03:40:20,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:40:20,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-10-14 03:40:20,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:20,357 INFO L225 Difference]: With dead ends: 19001 [2020-10-14 03:40:20,358 INFO L226 Difference]: Without dead ends: 11981 [2020-10-14 03:40:20,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 03:40:20,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11981 states. [2020-10-14 03:40:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11981 to 11981. [2020-10-14 03:40:20,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11981 states. [2020-10-14 03:40:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11981 states to 11981 states and 15397 transitions. [2020-10-14 03:40:20,706 INFO L78 Accepts]: Start accepts. Automaton has 11981 states and 15397 transitions. Word has length 256 [2020-10-14 03:40:20,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:20,707 INFO L479 AbstractCegarLoop]: Abstraction has 11981 states and 15397 transitions. [2020-10-14 03:40:20,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:40:20,708 INFO L276 IsEmpty]: Start isEmpty. Operand 11981 states and 15397 transitions. [2020-10-14 03:40:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 03:40:20,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:20,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:40:20,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:40:20,720 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:20,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:20,720 INFO L82 PathProgramCache]: Analyzing trace with hash 505621876, now seen corresponding path program 1 times [2020-10-14 03:40:20,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:20,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538848063] [2020-10-14 03:40:20,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:20,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:20,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:22,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:22,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-14 03:40:22,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:40:22,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1980 [2020-10-14 03:40:22,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:22,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:40:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 03:40:22,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:22,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:22,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:22,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:22,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:22,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:40:22,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:22,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:22,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:22,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:22,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:23,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:23,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:40:23,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:23,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 03:40:23,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:23,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:23,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:23,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:23,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:40:23,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:23,251 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:40:23,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538848063] [2020-10-14 03:40:23,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:23,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:40:23,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519045522] [2020-10-14 03:40:23,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:40:23,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:23,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:40:23,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:40:23,259 INFO L87 Difference]: Start difference. First operand 11981 states and 15397 transitions. Second operand 5 states. [2020-10-14 03:40:36,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:36,108 INFO L93 Difference]: Finished difference Result 29577 states and 38859 transitions. [2020-10-14 03:40:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:40:36,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-14 03:40:36,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:36,202 INFO L225 Difference]: With dead ends: 29577 [2020-10-14 03:40:36,202 INFO L226 Difference]: Without dead ends: 17909 [2020-10-14 03:40:36,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:40:36,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17909 states. [2020-10-14 03:40:36,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17909 to 17888. [2020-10-14 03:40:36,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17888 states. [2020-10-14 03:40:36,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17888 states to 17888 states and 23620 transitions. [2020-10-14 03:40:36,716 INFO L78 Accepts]: Start accepts. Automaton has 17888 states and 23620 transitions. Word has length 260 [2020-10-14 03:40:36,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:36,718 INFO L479 AbstractCegarLoop]: Abstraction has 17888 states and 23620 transitions. [2020-10-14 03:40:36,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:40:36,718 INFO L276 IsEmpty]: Start isEmpty. Operand 17888 states and 23620 transitions. [2020-10-14 03:40:36,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-14 03:40:36,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:36,733 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:40:36,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:40:36,734 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:36,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:36,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1120472964, now seen corresponding path program 1 times [2020-10-14 03:40:36,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:36,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018196808] [2020-10-14 03:40:36,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:36,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:37,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:40,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:40,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 03:40:40,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:40:40,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4108 [2020-10-14 03:40:40,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:40,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 03:40:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 03:40:40,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:41,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:41,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:41,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:41,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:41,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:41,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:40:41,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:41,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:41,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:41,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:41,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:41,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:41,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:41,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:41,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:40:41,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:41,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 03:40:41,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:41,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:41,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:41,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:40:41,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:41,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 03:40:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:41,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:41,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:41,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:40:41,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:41,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 03:40:41,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:41,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:41,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 03:40:41,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:40:41,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018196808] [2020-10-14 03:40:41,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:41,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:40:41,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433712009] [2020-10-14 03:40:41,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:40:41,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:41,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:40:41,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:40:41,780 INFO L87 Difference]: Start difference. First operand 17888 states and 23620 transitions. Second operand 8 states. [2020-10-14 03:40:51,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:51,619 INFO L93 Difference]: Finished difference Result 39889 states and 52926 transitions. [2020-10-14 03:40:51,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:40:51,621 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 266 [2020-10-14 03:40:51,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:51,712 INFO L225 Difference]: With dead ends: 39889 [2020-10-14 03:40:51,713 INFO L226 Difference]: Without dead ends: 22314 [2020-10-14 03:40:51,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:40:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22314 states. [2020-10-14 03:40:52,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22314 to 21680. [2020-10-14 03:40:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21680 states. [2020-10-14 03:40:52,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21680 states to 21680 states and 27397 transitions. [2020-10-14 03:40:52,312 INFO L78 Accepts]: Start accepts. Automaton has 21680 states and 27397 transitions. Word has length 266 [2020-10-14 03:40:52,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:52,312 INFO L479 AbstractCegarLoop]: Abstraction has 21680 states and 27397 transitions. [2020-10-14 03:40:52,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:40:52,313 INFO L276 IsEmpty]: Start isEmpty. Operand 21680 states and 27397 transitions. [2020-10-14 03:40:52,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-14 03:40:52,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:52,329 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:40:52,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:40:52,329 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:52,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:52,330 INFO L82 PathProgramCache]: Analyzing trace with hash -166189619, now seen corresponding path program 1 times [2020-10-14 03:40:52,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:52,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758532667] [2020-10-14 03:40:52,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:52,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:53,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:54,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:54,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-14 03:40:54,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:40:54,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2583 [2020-10-14 03:40:54,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:54,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:54,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 03:40:54,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:40:54,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-14 03:40:54,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:55,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:55,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:55,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:55,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:55,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:55,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:40:55,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:55,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:40:55,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:55,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:55,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:55,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:55,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 03:40:55,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:55,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-14 03:40:55,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:55,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:55,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:40:55,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:55,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-14 03:40:55,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:40:55,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758532667] [2020-10-14 03:40:55,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:55,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:40:55,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791098211] [2020-10-14 03:40:55,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:40:55,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:55,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:40:55,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:40:55,989 INFO L87 Difference]: Start difference. First operand 21680 states and 27397 transitions. Second operand 8 states. [2020-10-14 03:41:13,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:13,003 INFO L93 Difference]: Finished difference Result 51871 states and 66002 transitions. [2020-10-14 03:41:13,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:41:13,008 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 297 [2020-10-14 03:41:13,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:13,111 INFO L225 Difference]: With dead ends: 51871 [2020-10-14 03:41:13,111 INFO L226 Difference]: Without dead ends: 30504 [2020-10-14 03:41:13,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:41:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30504 states. [2020-10-14 03:41:13,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30504 to 30179. [2020-10-14 03:41:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30179 states. [2020-10-14 03:41:13,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30179 states to 30179 states and 37267 transitions. [2020-10-14 03:41:13,876 INFO L78 Accepts]: Start accepts. Automaton has 30179 states and 37267 transitions. Word has length 297 [2020-10-14 03:41:13,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:13,877 INFO L479 AbstractCegarLoop]: Abstraction has 30179 states and 37267 transitions. [2020-10-14 03:41:13,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:41:13,877 INFO L276 IsEmpty]: Start isEmpty. Operand 30179 states and 37267 transitions. [2020-10-14 03:41:13,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-14 03:41:13,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:13,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:41:13,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:41:13,894 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:13,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:13,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1203160277, now seen corresponding path program 1 times [2020-10-14 03:41:13,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:13,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315030139] [2020-10-14 03:41:13,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:14,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:14,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:14,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-14 03:41:14,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:14,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-14 03:41:14,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:14,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:41:14,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 03:41:14,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:14,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:14,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:14,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:14,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:14,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:14,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:41:14,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:14,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:14,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:14,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:14,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:14,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:14,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:41:14,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:14,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-14 03:41:14,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:14,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:41:14,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:15,218 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:41:15,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315030139] [2020-10-14 03:41:15,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:15,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:41:15,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843654612] [2020-10-14 03:41:15,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:41:15,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:15,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:41:15,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:41:15,222 INFO L87 Difference]: Start difference. First operand 30179 states and 37267 transitions. Second operand 5 states. [2020-10-14 03:41:25,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:25,546 INFO L93 Difference]: Finished difference Result 60046 states and 74387 transitions. [2020-10-14 03:41:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:41:25,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-10-14 03:41:25,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:25,635 INFO L225 Difference]: With dead ends: 60046 [2020-10-14 03:41:25,635 INFO L226 Difference]: Without dead ends: 30180 [2020-10-14 03:41:25,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:41:25,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30180 states. [2020-10-14 03:41:26,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30180 to 30163. [2020-10-14 03:41:26,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30163 states. [2020-10-14 03:41:26,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30163 states to 30163 states and 36533 transitions. [2020-10-14 03:41:26,277 INFO L78 Accepts]: Start accepts. Automaton has 30163 states and 36533 transitions. Word has length 334 [2020-10-14 03:41:26,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:26,277 INFO L479 AbstractCegarLoop]: Abstraction has 30163 states and 36533 transitions. [2020-10-14 03:41:26,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:41:26,277 INFO L276 IsEmpty]: Start isEmpty. Operand 30163 states and 36533 transitions. [2020-10-14 03:41:26,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-14 03:41:26,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:26,293 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:41:26,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:41:26,294 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:26,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:26,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1825429274, now seen corresponding path program 1 times [2020-10-14 03:41:26,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:26,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355847707] [2020-10-14 03:41:26,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:26,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:26,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:29,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:30,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:30,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:30,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-14 03:41:30,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:41:30,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4552 [2020-10-14 03:41:30,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:30,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:30,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:30,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:41:30,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 03:41:30,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:31,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:31,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:31,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:31,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:31,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:41:31,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:31,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:31,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:31,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:31,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:31,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:41:31,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:31,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 03:41:31,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:31,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:31,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:31,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:31,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:41:31,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:31,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:41:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:31,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:31,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:41:31,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:31,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 03:41:31,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:31,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:31,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:31,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:31,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:41:31,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:41:31,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355847707] [2020-10-14 03:41:31,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:31,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:41:31,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759448501] [2020-10-14 03:41:31,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:41:31,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:31,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:41:31,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:41:31,716 INFO L87 Difference]: Start difference. First operand 30163 states and 36533 transitions. Second operand 7 states. [2020-10-14 03:41:46,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:46,804 INFO L93 Difference]: Finished difference Result 69363 states and 84364 transitions. [2020-10-14 03:41:46,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:41:46,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-14 03:41:46,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:46,935 INFO L225 Difference]: With dead ends: 69363 [2020-10-14 03:41:46,935 INFO L226 Difference]: Without dead ends: 39517 [2020-10-14 03:41:46,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:41:47,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39517 states. [2020-10-14 03:41:47,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39517 to 38246. [2020-10-14 03:41:47,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38246 states. [2020-10-14 03:41:47,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38246 states to 38246 states and 46283 transitions. [2020-10-14 03:41:47,734 INFO L78 Accepts]: Start accepts. Automaton has 38246 states and 46283 transitions. Word has length 351 [2020-10-14 03:41:47,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:47,735 INFO L479 AbstractCegarLoop]: Abstraction has 38246 states and 46283 transitions. [2020-10-14 03:41:47,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:41:47,735 INFO L276 IsEmpty]: Start isEmpty. Operand 38246 states and 46283 transitions. [2020-10-14 03:41:47,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-14 03:41:47,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:47,749 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:41:47,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:41:47,749 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:47,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:47,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1864188871, now seen corresponding path program 1 times [2020-10-14 03:41:47,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:47,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615417560] [2020-10-14 03:41:47,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:47,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:48,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:48,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:49,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:49,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-14 03:41:49,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:41:49,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1604 [2020-10-14 03:41:49,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:49,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:41:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:41:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 03:41:49,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:49,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:49,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:49,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:49,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:49,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:41:49,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:49,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:41:49,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:49,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:49,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:49,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:49,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:41:49,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:49,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-14 03:41:49,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:49,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:49,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 03:41:49,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:50,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:41:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:50,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:50,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:50,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:41:50,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:50,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 03:41:50,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:50,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 03:41:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 106 proven. 98 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 03:41:50,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615417560] [2020-10-14 03:41:50,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:50,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:41:50,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011480938] [2020-10-14 03:41:50,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:41:50,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:50,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:41:50,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:41:50,539 INFO L87 Difference]: Start difference. First operand 38246 states and 46283 transitions. Second operand 7 states. [2020-10-14 03:42:01,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:42:01,913 INFO L93 Difference]: Finished difference Result 76245 states and 92355 transitions. [2020-10-14 03:42:01,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 03:42:01,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 363 [2020-10-14 03:42:01,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:42:02,042 INFO L225 Difference]: With dead ends: 76245 [2020-10-14 03:42:02,042 INFO L226 Difference]: Without dead ends: 38316 [2020-10-14 03:42:02,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 03:42:02,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38316 states. [2020-10-14 03:42:02,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38316 to 38296. [2020-10-14 03:42:02,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38296 states. [2020-10-14 03:42:02,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38296 states to 38296 states and 46335 transitions. [2020-10-14 03:42:02,845 INFO L78 Accepts]: Start accepts. Automaton has 38296 states and 46335 transitions. Word has length 363 [2020-10-14 03:42:02,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:42:02,845 INFO L479 AbstractCegarLoop]: Abstraction has 38296 states and 46335 transitions. [2020-10-14 03:42:02,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:42:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand 38296 states and 46335 transitions. [2020-10-14 03:42:02,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-14 03:42:02,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:42:02,859 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:42:02,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:42:02,860 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:42:02,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:42:02,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1166901221, now seen corresponding path program 1 times [2020-10-14 03:42:02,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:42:02,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263601340] [2020-10-14 03:42:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:42:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:02,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:03,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:03,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:06,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:06,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 389 [2020-10-14 03:42:06,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:42:06,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3772 [2020-10-14 03:42:06,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:06,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:42:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:42:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 03:42:06,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:07,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:42:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:07,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:07,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:07,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:42:07,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:07,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:42:07,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:07,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:07,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:07,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:07,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:07,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:07,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:42:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:07,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:07,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:07,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:42:07,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:07,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 03:42:07,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:07,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:07,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:42:07,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:07,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:42:07,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:07,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:42:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:07,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:07,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:07,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:42:07,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:07,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 03:42:07,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:07,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:07,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:42:07,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:42:07,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 03:42:07,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:07,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-14 03:42:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:07,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:07,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:07,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:42:07,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:07,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 03:42:07,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:07,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 03:42:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:07,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 255 proven. 90 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-14 03:42:07,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263601340] [2020-10-14 03:42:07,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:42:07,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:42:07,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968974770] [2020-10-14 03:42:07,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:42:07,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:42:07,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:42:07,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:42:07,444 INFO L87 Difference]: Start difference. First operand 38296 states and 46335 transitions. Second operand 7 states.