/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/Problem11_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:34:20,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:34:20,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:34:20,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:34:20,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:34:20,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:34:20,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:34:20,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:34:20,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:34:20,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:34:20,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:34:20,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:34:20,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:34:20,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:34:20,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:34:20,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:34:20,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:34:20,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:34:20,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:34:20,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:34:20,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:34:20,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:34:20,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:34:20,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:34:20,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:34:20,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:34:20,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:34:20,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:34:20,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:34:20,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:34:20,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:34:20,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:34:20,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:34:20,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:34:20,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:34:20,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:34:20,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:34:20,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:34:20,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:34:20,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:34:20,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:34:20,286 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 02:34:20,308 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:34:20,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:34:20,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:34:20,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:34:20,310 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:34:20,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:34:20,310 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:34:20,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:34:20,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:34:20,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:34:20,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:34:20,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:34:20,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:34:20,312 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:34:20,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:34:20,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:34:20,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:34:20,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:34:20,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:34:20,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:34:20,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:34:20,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:34:20,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:34:20,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:34:20,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:34:20,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:34:20,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:34:20,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:34:20,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:34:20,316 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 02:34:20,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:34:20,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:34:20,633 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:34:20,635 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:34:20,635 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:34:20,636 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label19.c [2020-10-14 02:34:20,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03056778d/73b8d854aa3440bc8191ea8aadd61d4b/FLAG9046a8e28 [2020-10-14 02:34:21,322 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:34:21,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label19.c [2020-10-14 02:34:21,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03056778d/73b8d854aa3440bc8191ea8aadd61d4b/FLAG9046a8e28 [2020-10-14 02:34:21,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03056778d/73b8d854aa3440bc8191ea8aadd61d4b [2020-10-14 02:34:21,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:34:21,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:34:21,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:34:21,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:34:21,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:34:21,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:34:21" (1/1) ... [2020-10-14 02:34:21,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa107a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:34:21, skipping insertion in model container [2020-10-14 02:34:21,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:34:21" (1/1) ... [2020-10-14 02:34:21,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:34:21,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:34:22,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:34:22,254 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:34:22,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:34:22,424 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:34:22,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:34:22 WrapperNode [2020-10-14 02:34:22,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:34:22,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:34:22,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:34:22,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:34:22,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:34:22" (1/1) ... [2020-10-14 02:34:22,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:34:22" (1/1) ... [2020-10-14 02:34:22,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:34:22" (1/1) ... [2020-10-14 02:34:22,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:34:22" (1/1) ... [2020-10-14 02:34:22,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:34:22" (1/1) ... [2020-10-14 02:34:22,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:34:22" (1/1) ... [2020-10-14 02:34:22,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:34:22" (1/1) ... [2020-10-14 02:34:22,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:34:22,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:34:22,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:34:22,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:34:22,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:34:22" (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 02:34:22,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:34:22,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:34:22,656 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:34:22,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:34:22,656 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:34:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:34:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:34:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:34:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:34:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:34:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:34:24,385 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:34:24,386 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:34:24,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:34:24 BoogieIcfgContainer [2020-10-14 02:34:24,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:34:24,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:34:24,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:34:24,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:34:24,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:34:21" (1/3) ... [2020-10-14 02:34:24,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df02e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:34:24, skipping insertion in model container [2020-10-14 02:34:24,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:34:22" (2/3) ... [2020-10-14 02:34:24,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df02e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:34:24, skipping insertion in model container [2020-10-14 02:34:24,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:34:24" (3/3) ... [2020-10-14 02:34:24,404 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label19.c [2020-10-14 02:34:24,416 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:34:24,426 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:34:24,443 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:34:24,473 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:34:24,474 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:34:24,474 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:34:24,474 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:34:24,474 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:34:24,475 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:34:24,475 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:34:24,475 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:34:24,506 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-14 02:34:24,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 02:34:24,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:34:24,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:34:24,519 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:34:24,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:34:24,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1241910813, now seen corresponding path program 1 times [2020-10-14 02:34:24,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:34:24,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513441193] [2020-10-14 02:34:24,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:34:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:24,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:25,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:25,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 02:34:25,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:25,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-14 02:34:25,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:25,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:25,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:34:25,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:34:25,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 02:34:25,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:34:25,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:34:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:25,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:25,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:25,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:34:25,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:25,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 02:34:25,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:25,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:25,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:34:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:34:25,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:25,392 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 02:34:25,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513441193] [2020-10-14 02:34:25,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:34:25,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:34:25,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718218394] [2020-10-14 02:34:25,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:34:25,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:34:25,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:34:25,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:34:25,427 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-14 02:34:27,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:34:27,996 INFO L93 Difference]: Finished difference Result 788 states and 1382 transitions. [2020-10-14 02:34:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:34:28,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-14 02:34:28,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:34:28,018 INFO L225 Difference]: With dead ends: 788 [2020-10-14 02:34:28,018 INFO L226 Difference]: Without dead ends: 431 [2020-10-14 02:34:28,028 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 02:34:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-14 02:34:28,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2020-10-14 02:34:28,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-14 02:34:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 612 transitions. [2020-10-14 02:34:28,113 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 612 transitions. Word has length 62 [2020-10-14 02:34:28,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:34:28,114 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 612 transitions. [2020-10-14 02:34:28,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:34:28,114 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 612 transitions. [2020-10-14 02:34:28,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 02:34:28,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:34:28,122 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, 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 02:34:28,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:34:28,122 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:34:28,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:34:28,123 INFO L82 PathProgramCache]: Analyzing trace with hash -960518398, now seen corresponding path program 1 times [2020-10-14 02:34:28,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:34:28,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422337107] [2020-10-14 02:34:28,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:34:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:28,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:28,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:29,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:29,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:29,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 02:34:29,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:34:29,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1582 [2020-10-14 02:34:29,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:29,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:29,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:29,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 02:34:29,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 02:34:29,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:34:29,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:34:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:29,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:29,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:29,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:34:29,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:29,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:34:29,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:29,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:29,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:29,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:29,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:29,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:29,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:34:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:29,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:30,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:30,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:34:30,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:30,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 02:34:30,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:30,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:34:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:34:30,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 02:34:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:34:30,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422337107] [2020-10-14 02:34:30,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:34:30,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:34:30,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291564931] [2020-10-14 02:34:30,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:34:30,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:34:30,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:34:30,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:34:30,165 INFO L87 Difference]: Start difference. First operand 425 states and 612 transitions. Second operand 5 states. [2020-10-14 02:34:32,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:34:32,483 INFO L93 Difference]: Finished difference Result 1241 states and 1804 transitions. [2020-10-14 02:34:32,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:34:32,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 02:34:32,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:34:32,492 INFO L225 Difference]: With dead ends: 1241 [2020-10-14 02:34:32,492 INFO L226 Difference]: Without dead ends: 822 [2020-10-14 02:34:32,494 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 02:34:32,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-10-14 02:34:32,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 818. [2020-10-14 02:34:32,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2020-10-14 02:34:32,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1092 transitions. [2020-10-14 02:34:32,545 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1092 transitions. Word has length 134 [2020-10-14 02:34:32,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:34:32,546 INFO L479 AbstractCegarLoop]: Abstraction has 818 states and 1092 transitions. [2020-10-14 02:34:32,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:34:32,547 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1092 transitions. [2020-10-14 02:34:32,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 02:34:32,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:34:32,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 02:34:32,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:34:32,551 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:34:32,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:34:32,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1725156587, now seen corresponding path program 1 times [2020-10-14 02:34:32,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:34:32,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830048056] [2020-10-14 02:34:32,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:34:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:32,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:33,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:33,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 02:34:33,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:33,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-14 02:34:33,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:33,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:33,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:34:33,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:34:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 02:34:33,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:33,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:34:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:33,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:33,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:33,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:34:33,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:33,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 02:34:33,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:33,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:34:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:33,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:34:33,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:34:33,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:34:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:33,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:33,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:33,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:34:33,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:33,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 02:34:33,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:33,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:33,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:33,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:34:33,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:34:33,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:34:33,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830048056] [2020-10-14 02:34:33,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:34:33,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 02:34:33,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13644229] [2020-10-14 02:34:33,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:34:33,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:34:33,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:34:33,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:34:33,595 INFO L87 Difference]: Start difference. First operand 818 states and 1092 transitions. Second operand 7 states. [2020-10-14 02:34:36,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:34:36,045 INFO L93 Difference]: Finished difference Result 1850 states and 2470 transitions. [2020-10-14 02:34:36,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:34:36,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-14 02:34:36,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:34:36,052 INFO L225 Difference]: With dead ends: 1850 [2020-10-14 02:34:36,052 INFO L226 Difference]: Without dead ends: 1038 [2020-10-14 02:34:36,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:34:36,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-14 02:34:36,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1021. [2020-10-14 02:34:36,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2020-10-14 02:34:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1315 transitions. [2020-10-14 02:34:36,100 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1315 transitions. Word has length 135 [2020-10-14 02:34:36,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:34:36,103 INFO L479 AbstractCegarLoop]: Abstraction has 1021 states and 1315 transitions. [2020-10-14 02:34:36,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:34:36,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1315 transitions. [2020-10-14 02:34:36,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 02:34:36,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:34:36,118 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:34:36,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:34:36,118 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:34:36,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:34:36,122 INFO L82 PathProgramCache]: Analyzing trace with hash 460038220, now seen corresponding path program 1 times [2020-10-14 02:34:36,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:34:36,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944791621] [2020-10-14 02:34:36,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:34:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:36,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:36,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:36,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 02:34:36,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:36,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-14 02:34:36,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:36,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:34:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 02:34:36,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:36,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:34:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:36,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:36,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:36,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:34:36,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:36,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:34:36,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:36,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:36,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:36,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:34:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:36,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:36,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:36,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:34:36,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 02:34:36,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:36,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:34:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:34:36,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:37,021 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:34:37,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944791621] [2020-10-14 02:34:37,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:34:37,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:34:37,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607563293] [2020-10-14 02:34:37,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:34:37,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:34:37,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:34:37,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:34:37,024 INFO L87 Difference]: Start difference. First operand 1021 states and 1315 transitions. Second operand 5 states. [2020-10-14 02:34:39,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:34:39,185 INFO L93 Difference]: Finished difference Result 2833 states and 3757 transitions. [2020-10-14 02:34:39,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:34:39,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-14 02:34:39,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:34:39,197 INFO L225 Difference]: With dead ends: 2833 [2020-10-14 02:34:39,197 INFO L226 Difference]: Without dead ends: 2006 [2020-10-14 02:34:39,200 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 02:34:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2020-10-14 02:34:39,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1799. [2020-10-14 02:34:39,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1799 states. [2020-10-14 02:34:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 2324 transitions. [2020-10-14 02:34:39,255 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 2324 transitions. Word has length 193 [2020-10-14 02:34:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:34:39,255 INFO L479 AbstractCegarLoop]: Abstraction has 1799 states and 2324 transitions. [2020-10-14 02:34:39,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:34:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 2324 transitions. [2020-10-14 02:34:39,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 02:34:39,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:34:39,261 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 02:34:39,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:34:39,261 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:34:39,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:34:39,262 INFO L82 PathProgramCache]: Analyzing trace with hash 2089704021, now seen corresponding path program 1 times [2020-10-14 02:34:39,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:34:39,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157021317] [2020-10-14 02:34:39,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:34:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:39,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:39,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:39,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:43,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:43,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 02:34:43,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:34:43,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3761 [2020-10-14 02:34:43,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:43,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:43,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:43,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 02:34:43,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:34:43,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:43,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:34:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:43,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:43,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:43,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:34:43,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:43,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:34:43,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:43,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:43,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:43,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:43,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:34:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:43,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:43,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:43,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:34:43,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:43,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 02:34:43,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:43,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:34:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:43,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:34:43,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:43,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 02:34:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:43,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:43,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:43,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:34:43,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:43,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 02:34:43,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:43,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:43,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:43,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:34:43,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:34:43,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:43,645 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:34:43,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157021317] [2020-10-14 02:34:43,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:34:43,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:34:43,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903604621] [2020-10-14 02:34:43,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:34:43,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:34:43,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:34:43,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:34:43,648 INFO L87 Difference]: Start difference. First operand 1799 states and 2324 transitions. Second operand 7 states. [2020-10-14 02:34:47,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:34:47,312 INFO L93 Difference]: Finished difference Result 4410 states and 5716 transitions. [2020-10-14 02:34:47,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:34:47,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-14 02:34:47,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:34:47,335 INFO L225 Difference]: With dead ends: 4410 [2020-10-14 02:34:47,336 INFO L226 Difference]: Without dead ends: 2805 [2020-10-14 02:34:47,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 02:34:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2020-10-14 02:34:47,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2403. [2020-10-14 02:34:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2020-10-14 02:34:47,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3070 transitions. [2020-10-14 02:34:47,424 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3070 transitions. Word has length 228 [2020-10-14 02:34:47,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:34:47,425 INFO L479 AbstractCegarLoop]: Abstraction has 2403 states and 3070 transitions. [2020-10-14 02:34:47,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:34:47,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3070 transitions. [2020-10-14 02:34:47,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 02:34:47,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:34:47,430 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 02:34:47,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:34:47,431 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:34:47,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:34:47,431 INFO L82 PathProgramCache]: Analyzing trace with hash -754149775, now seen corresponding path program 1 times [2020-10-14 02:34:47,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:34:47,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705316312] [2020-10-14 02:34:47,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:34:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:47,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:47,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:47,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:47,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:49,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:52,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:52,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 02:34:52,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:34:52,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 02:34:52,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:52,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:52,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:52,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 02:34:52,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 02:34:52,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:52,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:34:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:52,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:52,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:52,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:34:52,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:52,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:34:52,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:52,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:52,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:52,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:34:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:52,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:52,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:52,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:34:52,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:52,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 02:34:52,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:52,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:34:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:34:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:52,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 02:34:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:52,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:52,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:52,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 02:34:52,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:52,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 02:34:52,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:52,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:34:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:34:52,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:53,251 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:34:53,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705316312] [2020-10-14 02:34:53,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:34:53,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:34:53,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463887488] [2020-10-14 02:34:53,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:34:53,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:34:53,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:34:53,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:34:53,254 INFO L87 Difference]: Start difference. First operand 2403 states and 3070 transitions. Second operand 8 states. [2020-10-14 02:34:57,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:34:57,140 INFO L93 Difference]: Finished difference Result 6967 states and 9242 transitions. [2020-10-14 02:34:57,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:34:57,141 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-10-14 02:34:57,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:34:57,169 INFO L225 Difference]: With dead ends: 6967 [2020-10-14 02:34:57,169 INFO L226 Difference]: Without dead ends: 4758 [2020-10-14 02:34:57,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:34:57,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4758 states. [2020-10-14 02:34:57,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4758 to 3969. [2020-10-14 02:34:57,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3969 states. [2020-10-14 02:34:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3969 states to 3969 states and 5143 transitions. [2020-10-14 02:34:57,319 INFO L78 Accepts]: Start accepts. Automaton has 3969 states and 5143 transitions. Word has length 230 [2020-10-14 02:34:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:34:57,320 INFO L479 AbstractCegarLoop]: Abstraction has 3969 states and 5143 transitions. [2020-10-14 02:34:57,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:34:57,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3969 states and 5143 transitions. [2020-10-14 02:34:57,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-14 02:34:57,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:34:57,329 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 02:34:57,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:34:57,329 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:34:57,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:34:57,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1761367228, now seen corresponding path program 1 times [2020-10-14 02:34:57,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:34:57,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206996142] [2020-10-14 02:34:57,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:34:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:57,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:57,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:58,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:59,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:59,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 02:34:59,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:34:59,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2033 [2020-10-14 02:34:59,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:59,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 02:34:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 02:34:59,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:59,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:34:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:59,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:59,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:59,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:34:59,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:59,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:34:59,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:59,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:59,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:59,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:59,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:59,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:59,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:34:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:59,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:59,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:59,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:34:59,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:59,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 02:34:59,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:59,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:34:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:34:59,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:59,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:34:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:59,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:59,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:59,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:34:59,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:59,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 02:34:59,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:59,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:34:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:34:59,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:35:00,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206996142] [2020-10-14 02:35:00,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:00,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:35:00,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161646973] [2020-10-14 02:35:00,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:35:00,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:00,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:35:00,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:35:00,098 INFO L87 Difference]: Start difference. First operand 3969 states and 5143 transitions. Second operand 7 states. [2020-10-14 02:35:02,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:02,814 INFO L93 Difference]: Finished difference Result 9318 states and 12511 transitions. [2020-10-14 02:35:02,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:35:02,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-14 02:35:02,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:02,842 INFO L225 Difference]: With dead ends: 9318 [2020-10-14 02:35:02,842 INFO L226 Difference]: Without dead ends: 5543 [2020-10-14 02:35:02,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:35:02,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5543 states. [2020-10-14 02:35:02,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5543 to 5345. [2020-10-14 02:35:02,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5345 states. [2020-10-14 02:35:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5345 states to 5345 states and 6717 transitions. [2020-10-14 02:35:02,988 INFO L78 Accepts]: Start accepts. Automaton has 5345 states and 6717 transitions. Word has length 251 [2020-10-14 02:35:02,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:02,988 INFO L479 AbstractCegarLoop]: Abstraction has 5345 states and 6717 transitions. [2020-10-14 02:35:02,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:35:02,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5345 states and 6717 transitions. [2020-10-14 02:35:02,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-14 02:35:02,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:02,997 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 02:35:02,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:35:02,997 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:02,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:02,998 INFO L82 PathProgramCache]: Analyzing trace with hash 293867796, now seen corresponding path program 1 times [2020-10-14 02:35:02,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:02,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543425999] [2020-10-14 02:35:02,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:03,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:03,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:04,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:04,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 02:35:04,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:35:04,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1731 [2020-10-14 02:35:04,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:04,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:04,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:04,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:35:04,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:35:04,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:04,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:04,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:04,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:04,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:04,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:04,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:35:04,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:04,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:04,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:04,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:04,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:04,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:04,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:04,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:05,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:05,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:35:05,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:05,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 02:35:05,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:05,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:05,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:05,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:35:05,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:05,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:35:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:05,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:05,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:05,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 02:35:05,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:05,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 02:35:05,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:05,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:35:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:35:05,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:35:05,484 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:35:05,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543425999] [2020-10-14 02:35:05,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:05,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:35:05,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450408419] [2020-10-14 02:35:05,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:35:05,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:05,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:35:05,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:35:05,488 INFO L87 Difference]: Start difference. First operand 5345 states and 6717 transitions. Second operand 7 states. [2020-10-14 02:35:08,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:08,989 INFO L93 Difference]: Finished difference Result 11485 states and 15006 transitions. [2020-10-14 02:35:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:35:08,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-10-14 02:35:08,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:09,020 INFO L225 Difference]: With dead ends: 11485 [2020-10-14 02:35:09,021 INFO L226 Difference]: Without dead ends: 6524 [2020-10-14 02:35:09,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 02:35:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6524 states. [2020-10-14 02:35:09,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6524 to 6508. [2020-10-14 02:35:09,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6508 states. [2020-10-14 02:35:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6508 states to 6508 states and 8278 transitions. [2020-10-14 02:35:09,207 INFO L78 Accepts]: Start accepts. Automaton has 6508 states and 8278 transitions. Word has length 262 [2020-10-14 02:35:09,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:09,208 INFO L479 AbstractCegarLoop]: Abstraction has 6508 states and 8278 transitions. [2020-10-14 02:35:09,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:35:09,210 INFO L276 IsEmpty]: Start isEmpty. Operand 6508 states and 8278 transitions. [2020-10-14 02:35:09,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-14 02:35:09,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:09,221 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:35:09,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:35:09,221 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:09,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:09,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1262016993, now seen corresponding path program 1 times [2020-10-14 02:35:09,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:09,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554879942] [2020-10-14 02:35:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:09,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:09,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:10,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:10,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-14 02:35:10,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:35:10,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1683 [2020-10-14 02:35:10,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:10,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:35:10,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:35:10,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:11,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:11,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:11,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:11,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:11,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:11,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:35:11,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:11,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:11,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:11,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:11,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:11,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:11,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:35:11,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:11,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 02:35:11,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:11,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:35:11,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:11,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:35:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:11,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:11,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:11,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:35:11,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:11,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 02:35:11,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:11,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:11,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:11,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:35:11,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:35:11,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:35:11,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554879942] [2020-10-14 02:35:11,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:11,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:35:11,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226832281] [2020-10-14 02:35:11,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:35:11,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:11,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:35:11,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:35:11,644 INFO L87 Difference]: Start difference. First operand 6508 states and 8278 transitions. Second operand 7 states. [2020-10-14 02:35:15,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:15,353 INFO L93 Difference]: Finished difference Result 15342 states and 19656 transitions. [2020-10-14 02:35:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:35:15,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2020-10-14 02:35:15,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:15,396 INFO L225 Difference]: With dead ends: 15342 [2020-10-14 02:35:15,399 INFO L226 Difference]: Without dead ends: 9218 [2020-10-14 02:35:15,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 02:35:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9218 states. [2020-10-14 02:35:15,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9218 to 7672. [2020-10-14 02:35:15,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7672 states. [2020-10-14 02:35:15,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7672 states to 7672 states and 9689 transitions. [2020-10-14 02:35:15,616 INFO L78 Accepts]: Start accepts. Automaton has 7672 states and 9689 transitions. Word has length 287 [2020-10-14 02:35:15,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:15,616 INFO L479 AbstractCegarLoop]: Abstraction has 7672 states and 9689 transitions. [2020-10-14 02:35:15,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:35:15,617 INFO L276 IsEmpty]: Start isEmpty. Operand 7672 states and 9689 transitions. [2020-10-14 02:35:15,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-14 02:35:15,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:15,627 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:35:15,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:35:15,628 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:15,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:15,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1032063254, now seen corresponding path program 1 times [2020-10-14 02:35:15,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:15,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417511026] [2020-10-14 02:35:15,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:15,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:15,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:17,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:17,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-14 02:35:17,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:35:17,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1589 [2020-10-14 02:35:17,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:17,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 02:35:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:35:17,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:17,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:17,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:17,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:17,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:17,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:17,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:35:17,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:17,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:17,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:17,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:17,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:17,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:17,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:17,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:17,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:17,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 02:35:17,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:17,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 02:35:17,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:17,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 02:35:17,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:17,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 02:35:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:17,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:17,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:17,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:35:17,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:17,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 02:35:17,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:17,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:17,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:35:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:35:17,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:35:17,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417511026] [2020-10-14 02:35:17,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:17,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:35:17,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225819378] [2020-10-14 02:35:17,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:35:17,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:17,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:35:17,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:35:17,927 INFO L87 Difference]: Start difference. First operand 7672 states and 9689 transitions. Second operand 7 states. [2020-10-14 02:35:20,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:20,711 INFO L93 Difference]: Finished difference Result 13037 states and 17831 transitions. [2020-10-14 02:35:20,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:35:20,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-10-14 02:35:20,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:20,748 INFO L225 Difference]: With dead ends: 13037 [2020-10-14 02:35:20,749 INFO L226 Difference]: Without dead ends: 8249 [2020-10-14 02:35:20,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:35:20,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8249 states. [2020-10-14 02:35:20,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8249 to 7500. [2020-10-14 02:35:20,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7500 states. [2020-10-14 02:35:20,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7500 states to 7500 states and 9453 transitions. [2020-10-14 02:35:20,999 INFO L78 Accepts]: Start accepts. Automaton has 7500 states and 9453 transitions. Word has length 303 [2020-10-14 02:35:21,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:21,000 INFO L479 AbstractCegarLoop]: Abstraction has 7500 states and 9453 transitions. [2020-10-14 02:35:21,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:35:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 7500 states and 9453 transitions. [2020-10-14 02:35:21,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-14 02:35:21,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:21,011 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:35:21,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:35:21,012 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:21,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:21,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1030590380, now seen corresponding path program 1 times [2020-10-14 02:35:21,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:21,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622432225] [2020-10-14 02:35:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:21,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:21,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:21,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-14 02:35:21,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:21,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-14 02:35:21,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:21,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 02:35:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 02:35:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:21,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:21,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:21,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:21,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:21,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:21,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:35:21,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:21,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:21,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:21,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:21,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:21,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:21,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:35:21,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:21,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 02:35:21,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:21,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:21,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:35:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:21,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:21,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:21,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:35:21,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:21,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 02:35:21,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:21,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:35:21,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-14 02:35:22,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622432225] [2020-10-14 02:35:22,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:22,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:35:22,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104411874] [2020-10-14 02:35:22,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:35:22,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:22,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:35:22,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:35:22,016 INFO L87 Difference]: Start difference. First operand 7500 states and 9453 transitions. Second operand 5 states. [2020-10-14 02:35:24,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:24,475 INFO L93 Difference]: Finished difference Result 15790 states and 19922 transitions. [2020-10-14 02:35:24,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:35:24,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-14 02:35:24,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:24,508 INFO L225 Difference]: With dead ends: 15790 [2020-10-14 02:35:24,508 INFO L226 Difference]: Without dead ends: 8674 [2020-10-14 02:35:24,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 02:35:24,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8674 states. [2020-10-14 02:35:24,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8674 to 8268. [2020-10-14 02:35:24,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8268 states. [2020-10-14 02:35:24,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8268 states to 8268 states and 10047 transitions. [2020-10-14 02:35:24,706 INFO L78 Accepts]: Start accepts. Automaton has 8268 states and 10047 transitions. Word has length 309 [2020-10-14 02:35:24,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:24,707 INFO L479 AbstractCegarLoop]: Abstraction has 8268 states and 10047 transitions. [2020-10-14 02:35:24,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:35:24,708 INFO L276 IsEmpty]: Start isEmpty. Operand 8268 states and 10047 transitions. [2020-10-14 02:35:24,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-14 02:35:24,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:24,724 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 02:35:24,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 02:35:24,725 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:24,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:24,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1531333545, now seen corresponding path program 1 times [2020-10-14 02:35:24,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:24,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002469392] [2020-10-14 02:35:24,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:24,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:25,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:26,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:26,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-14 02:35:26,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:35:26,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1752 [2020-10-14 02:35:26,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:26,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:26,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:26,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-14 02:35:26,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 02:35:26,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:26,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:26,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:26,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:26,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:26,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:26,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:35:26,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:26,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:26,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:35:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:26,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:26,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:26,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:35:26,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:26,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 02:35:26,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:26,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:26,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:26,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:26,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:26,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:35:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:26,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:26,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:26,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 02:35:26,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 02:35:26,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:26,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 02:35:26,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:26,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-14 02:35:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:26,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:26,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:26,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:35:26,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:26,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 02:35:26,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:26,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:26,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:26,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:35:26,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:35:26,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 307 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 02:35:27,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002469392] [2020-10-14 02:35:27,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:27,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:35:27,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707850517] [2020-10-14 02:35:27,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:35:27,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:27,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:35:27,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:35:27,118 INFO L87 Difference]: Start difference. First operand 8268 states and 10047 transitions. Second operand 7 states. [2020-10-14 02:35:30,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:30,045 INFO L93 Difference]: Finished difference Result 16762 states and 20584 transitions. [2020-10-14 02:35:30,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:35:30,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-14 02:35:30,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:30,073 INFO L225 Difference]: With dead ends: 16762 [2020-10-14 02:35:30,073 INFO L226 Difference]: Without dead ends: 8688 [2020-10-14 02:35:30,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:35:30,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8688 states. [2020-10-14 02:35:30,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8688 to 8663. [2020-10-14 02:35:30,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8663 states. [2020-10-14 02:35:30,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8663 states to 8663 states and 10527 transitions. [2020-10-14 02:35:30,234 INFO L78 Accepts]: Start accepts. Automaton has 8663 states and 10527 transitions. Word has length 336 [2020-10-14 02:35:30,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:30,236 INFO L479 AbstractCegarLoop]: Abstraction has 8663 states and 10527 transitions. [2020-10-14 02:35:30,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:35:30,236 INFO L276 IsEmpty]: Start isEmpty. Operand 8663 states and 10527 transitions. [2020-10-14 02:35:30,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-14 02:35:30,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:30,253 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:35:30,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 02:35:30,254 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:30,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:30,254 INFO L82 PathProgramCache]: Analyzing trace with hash 128038491, now seen corresponding path program 1 times [2020-10-14 02:35:30,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:30,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205289446] [2020-10-14 02:35:30,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:30,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:30,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:30,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:30,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:33,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:34,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:35,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:35,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-14 02:35:35,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:35:35,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 02:35:35,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:35,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:35,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:35,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 02:35:35,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:35:35,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:35,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:35,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:35,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:35,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:35,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:35,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 02:35:35,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:35,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:35,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:35,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:35,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:35,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:35,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:35,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:35:35,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:35,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 02:35:35,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:35,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 02:35:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:35:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:35,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:35:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:35,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:35,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:35,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 02:35:35,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:35,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 02:35:35,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:35,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:35,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:35,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 02:35:35,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:35,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:35,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-14 02:35:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:35,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:35,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:35:35,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:35,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 02:35:35,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:35,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:35,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 02:35:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:35,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 165 proven. 4 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-14 02:35:35,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205289446] [2020-10-14 02:35:35,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:35,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:35:35,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531237025] [2020-10-14 02:35:35,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:35:35,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:35,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:35:35,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:35:35,938 INFO L87 Difference]: Start difference. First operand 8663 states and 10527 transitions. Second operand 5 states. [2020-10-14 02:35:38,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:38,165 INFO L93 Difference]: Finished difference Result 18640 states and 23333 transitions. [2020-10-14 02:35:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:35:38,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 346 [2020-10-14 02:35:38,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:38,304 INFO L225 Difference]: With dead ends: 18640 [2020-10-14 02:35:38,304 INFO L226 Difference]: Without dead ends: 10361 [2020-10-14 02:35:38,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:35:38,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10361 states. [2020-10-14 02:35:38,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10361 to 9774. [2020-10-14 02:35:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9774 states. [2020-10-14 02:35:38,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9774 states to 9774 states and 11829 transitions. [2020-10-14 02:35:38,487 INFO L78 Accepts]: Start accepts. Automaton has 9774 states and 11829 transitions. Word has length 346 [2020-10-14 02:35:38,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:38,488 INFO L479 AbstractCegarLoop]: Abstraction has 9774 states and 11829 transitions. [2020-10-14 02:35:38,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:35:38,488 INFO L276 IsEmpty]: Start isEmpty. Operand 9774 states and 11829 transitions. [2020-10-14 02:35:38,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-14 02:35:38,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:38,504 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:35:38,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 02:35:38,504 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:38,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:38,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1420359661, now seen corresponding path program 1 times [2020-10-14 02:35:38,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:38,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826629464] [2020-10-14 02:35:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:38,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:39,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:39,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-14 02:35:39,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:39,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-14 02:35:39,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:39,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-14 02:35:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 02:35:39,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:39,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:39,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:39,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:39,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:39,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:35:39,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:39,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:39,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:39,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:39,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:39,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:39,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:39,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:35:39,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:39,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 02:35:39,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:39,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:39,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:39,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:35:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:39,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:39,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:39,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:35:39,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:39,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 02:35:39,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:39,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:35:39,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:39,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:35:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:39,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:39,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:39,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:35:39,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:39,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 02:35:39,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:39,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:35:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:35:39,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:39,606 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 02:35:39,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826629464] [2020-10-14 02:35:39,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:39,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:35:39,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800065369] [2020-10-14 02:35:39,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:35:39,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:39,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:35:39,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:35:39,608 INFO L87 Difference]: Start difference. First operand 9774 states and 11829 transitions. Second operand 8 states. [2020-10-14 02:35:43,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:43,257 INFO L93 Difference]: Finished difference Result 18436 states and 22961 transitions. [2020-10-14 02:35:43,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 02:35:43,258 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 347 [2020-10-14 02:35:43,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:43,296 INFO L225 Difference]: With dead ends: 18436 [2020-10-14 02:35:43,296 INFO L226 Difference]: Without dead ends: 11734 [2020-10-14 02:35:43,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 02:35:43,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11734 states. [2020-10-14 02:35:43,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11734 to 11700. [2020-10-14 02:35:43,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11700 states. [2020-10-14 02:35:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11700 states to 11700 states and 13969 transitions. [2020-10-14 02:35:43,542 INFO L78 Accepts]: Start accepts. Automaton has 11700 states and 13969 transitions. Word has length 347 [2020-10-14 02:35:43,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:43,542 INFO L479 AbstractCegarLoop]: Abstraction has 11700 states and 13969 transitions. [2020-10-14 02:35:43,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:35:43,543 INFO L276 IsEmpty]: Start isEmpty. Operand 11700 states and 13969 transitions. [2020-10-14 02:35:43,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-14 02:35:43,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:43,554 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:35:43,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 02:35:43,554 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:43,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:43,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1781590312, now seen corresponding path program 1 times [2020-10-14 02:35:43,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:43,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804451666] [2020-10-14 02:35:43,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:43,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:43,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:43,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:44,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:44,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:44,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-14 02:35:44,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:35:44,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-10-14 02:35:44,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:44,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:35:44,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-14 02:35:44,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:44,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:44,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:44,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:44,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:44,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:44,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:35:44,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:44,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:44,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:44,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:44,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:35:44,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:44,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:44,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:44,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:44,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:44,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:35:44,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:35:44,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 02:35:44,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:44,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 02:35:44,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:44,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:35:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:44,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:45,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:45,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 02:35:45,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:35:45,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 02:35:45,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:45,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 02:35:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 02:35:45,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-14 02:35:45,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804451666] [2020-10-14 02:35:45,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:35:45,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 02:35:45,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334463747] [2020-10-14 02:35:45,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:35:45,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:45,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:35:45,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:35:45,256 INFO L87 Difference]: Start difference. First operand 11700 states and 13969 transitions. Second operand 6 states. [2020-10-14 02:35:46,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:46,817 INFO L93 Difference]: Finished difference Result 19948 states and 24014 transitions. [2020-10-14 02:35:46,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:35:46,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 352 [2020-10-14 02:35:46,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:46,851 INFO L225 Difference]: With dead ends: 19948 [2020-10-14 02:35:46,851 INFO L226 Difference]: Without dead ends: 11320 [2020-10-14 02:35:46,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:35:46,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11320 states. [2020-10-14 02:35:47,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11320 to 10909. [2020-10-14 02:35:47,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10909 states. [2020-10-14 02:35:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10909 states to 10909 states and 13026 transitions. [2020-10-14 02:35:47,091 INFO L78 Accepts]: Start accepts. Automaton has 10909 states and 13026 transitions. Word has length 352 [2020-10-14 02:35:47,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:47,092 INFO L479 AbstractCegarLoop]: Abstraction has 10909 states and 13026 transitions. [2020-10-14 02:35:47,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:35:47,092 INFO L276 IsEmpty]: Start isEmpty. Operand 10909 states and 13026 transitions. [2020-10-14 02:35:47,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 02:35:47,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:47,109 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:35:47,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 02:35:47,109 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:47,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:47,110 INFO L82 PathProgramCache]: Analyzing trace with hash 2060982151, now seen corresponding path program 1 times [2020-10-14 02:35:47,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:47,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047853781] [2020-10-14 02:35:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:47,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:47,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:47,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:48,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:48,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-14 02:35:48,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:35:48,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1610 [2020-10-14 02:35:48,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:48,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-14 02:35:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 02:35:48,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:48,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:48,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:48,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:48,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:48,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:35:48,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:48,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:48,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:48,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:48,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:48,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:48,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:35:48,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:48,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 02:35:48,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:48,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:48,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:48,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:48,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:48,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:48,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:35:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:49,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:49,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:49,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:35:49,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:49,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 02:35:49,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:49,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:35:49,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:49,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:35:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:49,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:49,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:49,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 02:35:49,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:49,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 02:35:49,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:49,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:49,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:49,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:35:49,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 02:35:49,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:49,240 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 02:35:49,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047853781] [2020-10-14 02:35:49,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:49,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:35:49,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880650276] [2020-10-14 02:35:49,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:35:49,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:49,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:35:49,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:35:49,242 INFO L87 Difference]: Start difference. First operand 10909 states and 13026 transitions. Second operand 7 states. [2020-10-14 02:35:52,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:52,217 INFO L93 Difference]: Finished difference Result 20117 states and 24358 transitions. [2020-10-14 02:35:52,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:35:52,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2020-10-14 02:35:52,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:52,257 INFO L225 Difference]: With dead ends: 20117 [2020-10-14 02:35:52,257 INFO L226 Difference]: Without dead ends: 12280 [2020-10-14 02:35:52,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:35:52,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12280 states. [2020-10-14 02:35:52,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12280 to 12251. [2020-10-14 02:35:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12251 states. [2020-10-14 02:35:52,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12251 states to 12251 states and 14525 transitions. [2020-10-14 02:35:52,501 INFO L78 Accepts]: Start accepts. Automaton has 12251 states and 14525 transitions. Word has length 376 [2020-10-14 02:35:52,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:52,501 INFO L479 AbstractCegarLoop]: Abstraction has 12251 states and 14525 transitions. [2020-10-14 02:35:52,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:35:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 12251 states and 14525 transitions. [2020-10-14 02:35:52,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 02:35:52,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:52,516 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:35:52,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 02:35:52,516 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:52,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:52,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1324156300, now seen corresponding path program 1 times [2020-10-14 02:35:52,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:52,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188153475] [2020-10-14 02:35:52,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:52,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:53,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:53,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-14 02:35:53,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:53,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-14 02:35:53,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:53,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:53,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:53,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-14 02:35:53,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 02:35:53,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:53,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:53,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:53,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:53,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:53,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:35:53,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:53,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:53,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:53,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:53,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:53,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:53,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:53,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:53,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:35:53,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 02:35:53,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:53,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:53,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:35:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:53,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:53,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:53,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 02:35:53,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:53,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 02:35:53,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:53,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:53,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:53,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:53,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 02:35:53,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:53,474 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-14 02:35:53,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188153475] [2020-10-14 02:35:53,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:53,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:35:53,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080101071] [2020-10-14 02:35:53,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:35:53,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:53,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:35:53,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:35:53,477 INFO L87 Difference]: Start difference. First operand 12251 states and 14525 transitions. Second operand 5 states. [2020-10-14 02:35:56,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:56,103 INFO L93 Difference]: Finished difference Result 24737 states and 29377 transitions. [2020-10-14 02:35:56,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:35:56,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 376 [2020-10-14 02:35:56,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:56,146 INFO L225 Difference]: With dead ends: 24737 [2020-10-14 02:35:56,147 INFO L226 Difference]: Without dead ends: 15558 [2020-10-14 02:35:56,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 02:35:56,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15558 states. [2020-10-14 02:35:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15558 to 14959. [2020-10-14 02:35:56,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14959 states. [2020-10-14 02:35:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14959 states to 14959 states and 17680 transitions. [2020-10-14 02:35:56,469 INFO L78 Accepts]: Start accepts. Automaton has 14959 states and 17680 transitions. Word has length 376 [2020-10-14 02:35:56,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:56,469 INFO L479 AbstractCegarLoop]: Abstraction has 14959 states and 17680 transitions. [2020-10-14 02:35:56,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:35:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 14959 states and 17680 transitions. [2020-10-14 02:35:56,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-10-14 02:35:56,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:56,483 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 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 02:35:56,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 02:35:56,484 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:56,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:56,484 INFO L82 PathProgramCache]: Analyzing trace with hash 363804863, now seen corresponding path program 1 times [2020-10-14 02:35:56,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:56,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457237753] [2020-10-14 02:35:56,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:56,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:56,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:57,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:57,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:59,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:59,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:00,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:00,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-14 02:36:00,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:36:00,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4405 [2020-10-14 02:36:00,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:00,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:36:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-14 02:36:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 02:36:00,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:01,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:36:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:01,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:01,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:01,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:36:01,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:01,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:36:01,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:01,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:01,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:01,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:01,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:01,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:36:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:01,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:01,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:36:01,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:36:01,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:01,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:01,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:36:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:01,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:01,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:01,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 02:36:01,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:01,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 02:36:01,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:01,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:36:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:36:01,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:36:01,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-14 02:36:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:01,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:01,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:01,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:36:01,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:01,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-14 02:36:01,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:01,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:36:01,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:36:01,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:36:01,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:01,946 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 02:36:01,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457237753] [2020-10-14 02:36:01,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:36:01,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:36:01,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903136690] [2020-10-14 02:36:01,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:36:01,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:36:01,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:36:01,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:36:01,948 INFO L87 Difference]: Start difference. First operand 14959 states and 17680 transitions. Second operand 7 states. [2020-10-14 02:36:04,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:36:04,798 INFO L93 Difference]: Finished difference Result 27827 states and 33028 transitions. [2020-10-14 02:36:04,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:36:04,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 381 [2020-10-14 02:36:04,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:36:04,842 INFO L225 Difference]: With dead ends: 27827 [2020-10-14 02:36:04,843 INFO L226 Difference]: Without dead ends: 15940 [2020-10-14 02:36:04,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:36:04,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15940 states. [2020-10-14 02:36:05,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15940 to 15533. [2020-10-14 02:36:05,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15533 states. [2020-10-14 02:36:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15533 states to 15533 states and 18317 transitions. [2020-10-14 02:36:05,163 INFO L78 Accepts]: Start accepts. Automaton has 15533 states and 18317 transitions. Word has length 381 [2020-10-14 02:36:05,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:36:05,164 INFO L479 AbstractCegarLoop]: Abstraction has 15533 states and 18317 transitions. [2020-10-14 02:36:05,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:36:05,164 INFO L276 IsEmpty]: Start isEmpty. Operand 15533 states and 18317 transitions. [2020-10-14 02:36:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-14 02:36:05,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:36:05,179 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:36:05,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 02:36:05,180 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:36:05,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:36:05,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1518984895, now seen corresponding path program 1 times [2020-10-14 02:36:05,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:36:05,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151311481] [2020-10-14 02:36:05,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:36:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:05,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:05,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:06,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:06,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:08,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:08,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-14 02:36:08,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:36:08,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3581 [2020-10-14 02:36:08,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:08,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:08,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:36:08,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 347 [2020-10-14 02:36:08,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 02:36:08,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:08,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:36:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:08,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:08,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:08,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:36:08,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:08,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:36:08,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:08,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:08,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:36:09,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:36:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:09,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:09,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:09,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:36:09,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:09,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 02:36:09,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:09,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:09,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:09,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:36:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:09,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:09,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:09,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:36:09,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:09,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 02:36:09,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:09,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:09,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:09,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:09,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:36:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:09,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:09,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:09,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 02:36:09,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:09,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 02:36:09,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:09,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:36:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 02:36:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 168 proven. 3 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2020-10-14 02:36:09,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151311481] [2020-10-14 02:36:09,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:36:09,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:36:09,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699030749] [2020-10-14 02:36:09,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:36:09,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:36:09,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:36:09,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:36:09,333 INFO L87 Difference]: Start difference. First operand 15533 states and 18317 transitions. Second operand 5 states. [2020-10-14 02:36:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:36:12,156 INFO L93 Difference]: Finished difference Result 33163 states and 39461 transitions. [2020-10-14 02:36:12,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:36:12,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 395 [2020-10-14 02:36:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:36:12,200 INFO L225 Difference]: With dead ends: 33163 [2020-10-14 02:36:12,200 INFO L226 Difference]: Without dead ends: 18014 [2020-10-14 02:36:12,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 02:36:12,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18014 states. [2020-10-14 02:36:12,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18014 to 17613. [2020-10-14 02:36:12,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17613 states. [2020-10-14 02:36:12,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17613 states to 17613 states and 20836 transitions. [2020-10-14 02:36:12,540 INFO L78 Accepts]: Start accepts. Automaton has 17613 states and 20836 transitions. Word has length 395 [2020-10-14 02:36:12,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:36:12,540 INFO L479 AbstractCegarLoop]: Abstraction has 17613 states and 20836 transitions. [2020-10-14 02:36:12,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:36:12,540 INFO L276 IsEmpty]: Start isEmpty. Operand 17613 states and 20836 transitions. [2020-10-14 02:36:12,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-14 02:36:12,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:36:12,556 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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 02:36:12,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 02:36:12,556 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:36:12,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:36:12,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1849761457, now seen corresponding path program 1 times [2020-10-14 02:36:12,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:36:12,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490364942] [2020-10-14 02:36:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:36:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:12,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:12,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:13,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:13,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:17,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:17,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-14 02:36:17,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:36:17,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4991 [2020-10-14 02:36:17,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:17,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:36:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 361 [2020-10-14 02:36:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 02:36:17,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:17,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:36:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:17,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:17,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:17,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:36:17,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:17,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:36:17,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:17,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:17,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:17,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:17,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:36:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:17,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:17,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:17,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:36:17,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:17,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 02:36:17,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:17,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:17,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:17,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:17,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:17,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:17,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:36:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:17,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:17,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:36:17,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:17,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 02:36:17,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:17,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:17,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:17,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:17,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:17,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:17,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:36:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:17,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:17,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:17,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:36:17,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:17,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 02:36:17,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:17,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:36:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 02:36:17,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 168 proven. 3 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-14 02:36:18,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490364942] [2020-10-14 02:36:18,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:36:18,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:36:18,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086127595] [2020-10-14 02:36:18,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:36:18,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:36:18,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:36:18,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:36:18,034 INFO L87 Difference]: Start difference. First operand 17613 states and 20836 transitions. Second operand 5 states. [2020-10-14 02:36:20,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:36:20,297 INFO L93 Difference]: Finished difference Result 31980 states and 37990 transitions. [2020-10-14 02:36:20,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:36:20,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 411 [2020-10-14 02:36:20,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:36:20,335 INFO L225 Difference]: With dead ends: 31980 [2020-10-14 02:36:20,335 INFO L226 Difference]: Without dead ends: 17629 [2020-10-14 02:36:20,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 02:36:20,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17629 states. [2020-10-14 02:36:20,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17629 to 16847. [2020-10-14 02:36:20,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16847 states. [2020-10-14 02:36:20,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16847 states to 16847 states and 19696 transitions. [2020-10-14 02:36:20,881 INFO L78 Accepts]: Start accepts. Automaton has 16847 states and 19696 transitions. Word has length 411 [2020-10-14 02:36:20,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:36:20,882 INFO L479 AbstractCegarLoop]: Abstraction has 16847 states and 19696 transitions. [2020-10-14 02:36:20,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:36:20,882 INFO L276 IsEmpty]: Start isEmpty. Operand 16847 states and 19696 transitions. [2020-10-14 02:36:20,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-10-14 02:36:20,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:36:20,897 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:20,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 02:36:20,898 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:36:20,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:36:20,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1752407762, now seen corresponding path program 1 times [2020-10-14 02:36:20,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:36:20,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847705044] [2020-10-14 02:36:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:36:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:21,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:22,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:22,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-14 02:36:22,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:36:22,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1093 [2020-10-14 02:36:22,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:22,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:36:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 378 [2020-10-14 02:36:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 02:36:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:22,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:36:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:22,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:22,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:36:22,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:22,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:36:22,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:22,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:22,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:36:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:22,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:22,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:22,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:36:22,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:22,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 02:36:22,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:22,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:22,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:22,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:36:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:22,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:22,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:22,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:36:22,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:22,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 02:36:22,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:22,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:22,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:22,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:22,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:22,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:22,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:36:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:22,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:22,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:22,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 02:36:22,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:22,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 02:36:22,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:22,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:22,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:36:22,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:22,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 02:36:22,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 168 proven. 3 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-14 02:36:22,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847705044] [2020-10-14 02:36:22,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:36:22,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:36:22,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493720541] [2020-10-14 02:36:22,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:36:22,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:36:22,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:36:22,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:36:22,566 INFO L87 Difference]: Start difference. First operand 16847 states and 19696 transitions. Second operand 5 states. [2020-10-14 02:36:24,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:36:24,775 INFO L93 Difference]: Finished difference Result 19133 states and 22374 transitions. [2020-10-14 02:36:24,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:36:24,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 426 [2020-10-14 02:36:24,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:36:24,808 INFO L225 Difference]: With dead ends: 19133 [2020-10-14 02:36:24,808 INFO L226 Difference]: Without dead ends: 18941 [2020-10-14 02:36:24,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 02:36:24,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18941 states. [2020-10-14 02:36:25,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18941 to 17415. [2020-10-14 02:36:25,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17415 states. [2020-10-14 02:36:25,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17415 states to 17415 states and 20420 transitions. [2020-10-14 02:36:25,116 INFO L78 Accepts]: Start accepts. Automaton has 17415 states and 20420 transitions. Word has length 426 [2020-10-14 02:36:25,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:36:25,117 INFO L479 AbstractCegarLoop]: Abstraction has 17415 states and 20420 transitions. [2020-10-14 02:36:25,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:36:25,117 INFO L276 IsEmpty]: Start isEmpty. Operand 17415 states and 20420 transitions. [2020-10-14 02:36:25,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-14 02:36:25,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:36:25,135 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 02:36:25,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 02:36:25,135 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:36:25,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:36:25,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1242594938, now seen corresponding path program 1 times [2020-10-14 02:36:25,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:36:25,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40101348] [2020-10-14 02:36:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:36:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:25,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:25,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:25,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:26,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:26,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:30,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:30,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:30,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:30,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-14 02:36:30,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 02:36:30,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-14 02:36:30,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:30,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:30,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:36:30,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-14 02:36:30,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 02:36:30,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:36:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:30,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:30,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:30,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:36:30,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:30,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:36:30,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:30,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:30,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:30,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:30,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:30,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:36:30,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:36:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:30,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:30,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:30,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 02:36:30,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:30,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 02:36:30,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:30,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:30,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:30,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:30,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:30,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:30,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 02:36:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:30,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:30,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:30,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 02:36:30,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:30,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 02:36:30,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:30,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:30,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:36:30,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:30,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-14 02:36:30,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:30,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-14 02:36:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:30,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:30,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:30,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:36:30,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:30,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 02:36:30,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:30,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:30,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:36:30,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:36:30,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:36:30,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:31,084 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-14 02:36:31,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40101348] [2020-10-14 02:36:31,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:36:31,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:36:31,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272816932] [2020-10-14 02:36:31,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:36:31,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:36:31,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:36:31,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:36:31,087 INFO L87 Difference]: Start difference. First operand 17415 states and 20420 transitions. Second operand 7 states. [2020-10-14 02:36:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:36:34,443 INFO L93 Difference]: Finished difference Result 33125 states and 38988 transitions. [2020-10-14 02:36:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:36:34,448 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 448 [2020-10-14 02:36:34,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:36:34,488 INFO L225 Difference]: With dead ends: 33125 [2020-10-14 02:36:34,488 INFO L226 Difference]: Without dead ends: 18587 [2020-10-14 02:36:34,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:36:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18587 states. [2020-10-14 02:36:34,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18587 to 18181. [2020-10-14 02:36:34,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18181 states. [2020-10-14 02:36:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18181 states to 18181 states and 21110 transitions. [2020-10-14 02:36:34,797 INFO L78 Accepts]: Start accepts. Automaton has 18181 states and 21110 transitions. Word has length 448 [2020-10-14 02:36:34,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:36:34,798 INFO L479 AbstractCegarLoop]: Abstraction has 18181 states and 21110 transitions. [2020-10-14 02:36:34,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:36:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 18181 states and 21110 transitions. [2020-10-14 02:36:34,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-14 02:36:34,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:36:34,812 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:34,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 02:36:34,813 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:36:34,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:36:34,813 INFO L82 PathProgramCache]: Analyzing trace with hash -753528158, now seen corresponding path program 1 times [2020-10-14 02:36:34,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:36:34,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224939232] [2020-10-14 02:36:34,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:36:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:34,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:35,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:36,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:36,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:36,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-14 02:36:36,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:36:36,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1829 [2020-10-14 02:36:36,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:36,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:36,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:36:36,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 02:36:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 02:36:36,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:36,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:36:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:36,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:36,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:36,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:36:36,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:36,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:36:36,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:36,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:36,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:36,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:36:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:36,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:36,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:36,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:36:36,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:36,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 02:36:36,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:36,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:36,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:36,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:36:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:36,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:36,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:36,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:36:36,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:36,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 02:36:36,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:36,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:36,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:36:36,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:36,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:36:36,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:36,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 02:36:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:37,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:37,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:37,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 02:36:37,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:37,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 02:36:37,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:37,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:37,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:36:37,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:36:37,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 02:36:37,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 02:36:37,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224939232] [2020-10-14 02:36:37,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:36:37,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:36:37,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442714508] [2020-10-14 02:36:37,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:36:37,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:36:37,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:36:37,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:36:37,514 INFO L87 Difference]: Start difference. First operand 18181 states and 21110 transitions. Second operand 7 states. [2020-10-14 02:36:41,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:36:41,023 INFO L93 Difference]: Finished difference Result 34849 states and 40796 transitions. [2020-10-14 02:36:41,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:36:41,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 462 [2020-10-14 02:36:41,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:36:41,058 INFO L225 Difference]: With dead ends: 34849 [2020-10-14 02:36:41,058 INFO L226 Difference]: Without dead ends: 19740 [2020-10-14 02:36:41,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:36:41,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19740 states. [2020-10-14 02:36:41,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19740 to 19149. [2020-10-14 02:36:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19149 states. [2020-10-14 02:36:41,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19149 states to 19149 states and 22252 transitions. [2020-10-14 02:36:41,379 INFO L78 Accepts]: Start accepts. Automaton has 19149 states and 22252 transitions. Word has length 462 [2020-10-14 02:36:41,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:36:41,380 INFO L479 AbstractCegarLoop]: Abstraction has 19149 states and 22252 transitions. [2020-10-14 02:36:41,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:36:41,380 INFO L276 IsEmpty]: Start isEmpty. Operand 19149 states and 22252 transitions. [2020-10-14 02:36:41,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-14 02:36:41,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:36:41,395 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:36:41,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 02:36:41,395 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:36:41,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:36:41,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1019392374, now seen corresponding path program 1 times [2020-10-14 02:36:41,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:36:41,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263373505] [2020-10-14 02:36:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:36:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:41,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:41,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:42,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:42,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:43,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:46,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:46,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-14 02:36:46,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:36:46,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 02:36:46,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:46,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:46,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 02:36:46,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-14 02:36:46,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-14 02:36:46,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:46,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:36:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:46,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:46,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:46,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:36:46,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:46,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:36:46,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:46,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:46,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:46,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:46,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:36:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:46,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:46,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:46,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 02:36:46,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:46,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 02:36:46,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:46,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:46,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:36:46,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:46,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 02:36:46,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:46,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 02:36:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:46,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:46,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:47,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:47,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 02:36:47,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:36:47,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 02:36:47,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:47,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:47,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:36:47,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 02:36:47,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:47,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-14 02:36:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:47,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:47,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:47,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:36:47,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:47,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 02:36:47,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:47,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:47,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:36:47,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:36:47,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:36:47,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 243 proven. 66 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-14 02:36:47,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263373505] [2020-10-14 02:36:47,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:36:47,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:36:47,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885235096] [2020-10-14 02:36:47,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:36:47,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:36:47,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:36:47,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:36:47,302 INFO L87 Difference]: Start difference. First operand 19149 states and 22252 transitions. Second operand 8 states. [2020-10-14 02:36:52,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:36:52,237 INFO L93 Difference]: Finished difference Result 41413 states and 48264 transitions. [2020-10-14 02:36:52,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 02:36:52,238 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 465 [2020-10-14 02:36:52,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:36:52,274 INFO L225 Difference]: With dead ends: 41413 [2020-10-14 02:36:52,274 INFO L226 Difference]: Without dead ends: 22648 [2020-10-14 02:36:52,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 02:36:52,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22648 states. [2020-10-14 02:36:52,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22648 to 21257. [2020-10-14 02:36:52,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21257 states. [2020-10-14 02:36:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21257 states to 21257 states and 24477 transitions. [2020-10-14 02:36:52,601 INFO L78 Accepts]: Start accepts. Automaton has 21257 states and 24477 transitions. Word has length 465 [2020-10-14 02:36:52,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:36:52,602 INFO L479 AbstractCegarLoop]: Abstraction has 21257 states and 24477 transitions. [2020-10-14 02:36:52,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:36:52,602 INFO L276 IsEmpty]: Start isEmpty. Operand 21257 states and 24477 transitions. [2020-10-14 02:36:52,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-14 02:36:52,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:36:52,622 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:36:52,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 02:36:52,622 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:36:52,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:36:52,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1434518009, now seen corresponding path program 1 times [2020-10-14 02:36:52,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:36:52,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254233179] [2020-10-14 02:36:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:36:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:52,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:52,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:53,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:53,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:55,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:57,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:57,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 500 [2020-10-14 02:36:57,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:36:57,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 02:36:57,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:57,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:57,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:36:57,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 361 [2020-10-14 02:36:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 02:36:57,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:57,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:36:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:57,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:57,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:57,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:36:57,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:36:57,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:57,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:57,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:57,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:36:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:57,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:57,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:57,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:36:57,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 02:36:57,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:57,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:57,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:36:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:57,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:57,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:57,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:36:57,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:57,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 02:36:57,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:57,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:36:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:36:57,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:57,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:36:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:58,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:58,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:58,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:36:58,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:58,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 02:36:58,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:58,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:58,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:36:58,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:36:58,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 02:36:58,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:58,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-14 02:36:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:58,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:58,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:36:58,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:36:58,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:36:58,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 02:36:58,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:36:58,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:36:58,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:36:58,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:36:58,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:36:58,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:36:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 440 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-14 02:36:58,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254233179] [2020-10-14 02:36:58,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:36:58,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:36:58,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607837429] [2020-10-14 02:36:58,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:36:58,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:36:58,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:36:58,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:36:58,352 INFO L87 Difference]: Start difference. First operand 21257 states and 24477 transitions. Second operand 7 states. [2020-10-14 02:37:02,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:37:02,694 INFO L93 Difference]: Finished difference Result 39656 states and 45912 transitions. [2020-10-14 02:37:02,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:37:02,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 484 [2020-10-14 02:37:02,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:37:02,729 INFO L225 Difference]: With dead ends: 39656 [2020-10-14 02:37:02,729 INFO L226 Difference]: Without dead ends: 22233 [2020-10-14 02:37:02,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:37:02,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22233 states. [2020-10-14 02:37:02,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22233 to 22013. [2020-10-14 02:37:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22013 states. [2020-10-14 02:37:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22013 states to 22013 states and 25035 transitions. [2020-10-14 02:37:02,997 INFO L78 Accepts]: Start accepts. Automaton has 22013 states and 25035 transitions. Word has length 484 [2020-10-14 02:37:02,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:37:02,998 INFO L479 AbstractCegarLoop]: Abstraction has 22013 states and 25035 transitions. [2020-10-14 02:37:02,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:37:02,998 INFO L276 IsEmpty]: Start isEmpty. Operand 22013 states and 25035 transitions. [2020-10-14 02:37:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-14 02:37:03,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:37:03,013 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 02:37:03,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 02:37:03,014 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:37:03,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:37:03,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1297772459, now seen corresponding path program 1 times [2020-10-14 02:37:03,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:37:03,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800379694] [2020-10-14 02:37:03,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:37:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:03,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:03,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:04,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:05,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:05,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-14 02:37:05,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:37:05,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2051 [2020-10-14 02:37:05,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:05,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:37:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-14 02:37:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 02:37:05,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:05,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:37:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:05,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:05,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:05,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:37:05,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:05,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:37:05,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:05,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:05,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:05,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:05,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:05,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:37:05,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:37:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:05,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:05,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:05,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:37:05,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:05,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 02:37:05,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:05,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:05,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:05,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:05,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:05,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:37:05,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:37:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:05,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:05,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:05,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 02:37:05,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:05,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 02:37:05,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:05,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:05,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:37:05,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:05,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 02:37:05,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:37:05,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 02:37:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:05,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:05,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:05,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 02:37:05,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:05,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 02:37:05,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:05,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:05,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:37:05,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:37:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 02:37:05,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 431 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-14 02:37:06,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800379694] [2020-10-14 02:37:06,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:37:06,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:37:06,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808964901] [2020-10-14 02:37:06,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:37:06,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:37:06,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:37:06,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:37:06,151 INFO L87 Difference]: Start difference. First operand 22013 states and 25035 transitions. Second operand 8 states. [2020-10-14 02:37:10,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:37:10,416 INFO L93 Difference]: Finished difference Result 41767 states and 47502 transitions. [2020-10-14 02:37:10,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 02:37:10,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 484 [2020-10-14 02:37:10,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:37:10,453 INFO L225 Difference]: With dead ends: 41767 [2020-10-14 02:37:10,453 INFO L226 Difference]: Without dead ends: 23588 [2020-10-14 02:37:10,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-14 02:37:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23588 states. [2020-10-14 02:37:10,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23588 to 23539. [2020-10-14 02:37:10,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23539 states. [2020-10-14 02:37:10,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23539 states to 23539 states and 26634 transitions. [2020-10-14 02:37:10,725 INFO L78 Accepts]: Start accepts. Automaton has 23539 states and 26634 transitions. Word has length 484 [2020-10-14 02:37:10,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:37:10,725 INFO L479 AbstractCegarLoop]: Abstraction has 23539 states and 26634 transitions. [2020-10-14 02:37:10,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:37:10,725 INFO L276 IsEmpty]: Start isEmpty. Operand 23539 states and 26634 transitions. [2020-10-14 02:37:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-10-14 02:37:10,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:37:10,741 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:37:10,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 02:37:10,741 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:37:10,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:37:10,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1971043550, now seen corresponding path program 1 times [2020-10-14 02:37:10,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:37:10,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695969639] [2020-10-14 02:37:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:37:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:10,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:10,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:11,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:12,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:14,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:14,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 523 [2020-10-14 02:37:14,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:37:14,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3565 [2020-10-14 02:37:14,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:14,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:14,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:37:14,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 361 [2020-10-14 02:37:14,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:37:14,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:14,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:37:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:14,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:14,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:14,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:37:14,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:14,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:37:14,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:14,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:14,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:14,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:14,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:14,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:14,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:37:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:14,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:14,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:14,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:37:14,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:14,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:37:14,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:14,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:14,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:14,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:14,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:14,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:14,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:37:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:14,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:14,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:14,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:37:14,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:14,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 02:37:14,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:14,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:14,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:14,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:14,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:14,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:37:14,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:37:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:14,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:14,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:14,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:37:14,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:14,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 02:37:14,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:14,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:37:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-14 02:37:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:37:14,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:14,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-14 02:37:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:14,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:14,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:14,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 02:37:14,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:14,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 02:37:14,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:14,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 02:37:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:14,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:14,975 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2020-10-14 02:37:14,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695969639] [2020-10-14 02:37:14,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:37:14,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:37:14,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544438255] [2020-10-14 02:37:14,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:37:14,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:37:14,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:37:14,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:37:14,977 INFO L87 Difference]: Start difference. First operand 23539 states and 26634 transitions. Second operand 5 states. [2020-10-14 02:37:17,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:37:17,646 INFO L93 Difference]: Finished difference Result 44217 states and 50063 transitions. [2020-10-14 02:37:17,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:37:17,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 507 [2020-10-14 02:37:17,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:37:17,685 INFO L225 Difference]: With dead ends: 44217 [2020-10-14 02:37:17,685 INFO L226 Difference]: Without dead ends: 22978 [2020-10-14 02:37:17,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:37:17,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22978 states. [2020-10-14 02:37:17,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22978 to 21796. [2020-10-14 02:37:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21796 states. [2020-10-14 02:37:17,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21796 states to 21796 states and 24506 transitions. [2020-10-14 02:37:17,970 INFO L78 Accepts]: Start accepts. Automaton has 21796 states and 24506 transitions. Word has length 507 [2020-10-14 02:37:17,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:37:17,971 INFO L479 AbstractCegarLoop]: Abstraction has 21796 states and 24506 transitions. [2020-10-14 02:37:17,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:37:17,971 INFO L276 IsEmpty]: Start isEmpty. Operand 21796 states and 24506 transitions. [2020-10-14 02:37:17,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2020-10-14 02:37:17,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:37:17,990 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:37:17,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 02:37:17,991 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:37:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:37:17,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1939889909, now seen corresponding path program 1 times [2020-10-14 02:37:17,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:37:17,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496011923] [2020-10-14 02:37:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:37:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:18,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:18,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:19,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:19,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 579 [2020-10-14 02:37:19,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:37:19,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-14 02:37:19,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:19,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:19,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 02:37:19,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 442 [2020-10-14 02:37:19,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 02:37:19,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:19,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:37:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:19,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:19,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:19,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:37:19,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:19,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:37:19,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:19,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:19,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:37:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:19,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:19,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:19,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 02:37:19,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:19,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 02:37:19,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:19,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:19,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:19,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:19,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:19,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:19,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 02:37:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:19,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:19,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:19,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 02:37:19,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:19,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 02:37:19,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:19,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:19,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:37:19,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-14 02:37:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:19,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:19,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 02:37:19,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:19,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 02:37:19,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:19,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:19,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:37:19,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:19,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:37:19,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:19,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-10-14 02:37:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:19,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:19,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:37:19,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:19,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 02:37:19,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:19,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:19,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:37:19,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:37:19,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:37:19,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 385 proven. 57 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-10-14 02:37:19,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496011923] [2020-10-14 02:37:19,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:37:19,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:37:19,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242369193] [2020-10-14 02:37:19,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:37:19,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:37:19,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:37:19,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:37:19,724 INFO L87 Difference]: Start difference. First operand 21796 states and 24506 transitions. Second operand 8 states. [2020-10-14 02:37:24,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:37:24,705 INFO L93 Difference]: Finished difference Result 47904 states and 53878 transitions. [2020-10-14 02:37:24,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 02:37:24,707 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 563 [2020-10-14 02:37:24,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:37:24,754 INFO L225 Difference]: With dead ends: 47904 [2020-10-14 02:37:24,754 INFO L226 Difference]: Without dead ends: 26302 [2020-10-14 02:37:24,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:37:24,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26302 states. [2020-10-14 02:37:25,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26302 to 24482. [2020-10-14 02:37:25,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24482 states. [2020-10-14 02:37:25,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24482 states to 24482 states and 27297 transitions. [2020-10-14 02:37:25,057 INFO L78 Accepts]: Start accepts. Automaton has 24482 states and 27297 transitions. Word has length 563 [2020-10-14 02:37:25,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:37:25,058 INFO L479 AbstractCegarLoop]: Abstraction has 24482 states and 27297 transitions. [2020-10-14 02:37:25,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:37:25,058 INFO L276 IsEmpty]: Start isEmpty. Operand 24482 states and 27297 transitions. [2020-10-14 02:37:25,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2020-10-14 02:37:25,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:37:25,073 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 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 02:37:25,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 02:37:25,074 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:37:25,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:37:25,074 INFO L82 PathProgramCache]: Analyzing trace with hash -630226011, now seen corresponding path program 1 times [2020-10-14 02:37:25,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:37:25,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209860401] [2020-10-14 02:37:25,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:37:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:25,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:25,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:25,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:27,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:27,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:28,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:30,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:30,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 627 [2020-10-14 02:37:30,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:37:30,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-14 02:37:30,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:30,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:37:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 466 [2020-10-14 02:37:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 02:37:30,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:30,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:37:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:30,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:30,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:30,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:37:30,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:30,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:37:30,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:30,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:30,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:30,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:30,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:30,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:37:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:30,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:30,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:30,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:37:30,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:30,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 02:37:30,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:30,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:30,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:30,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:30,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:30,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 02:37:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:37:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:30,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:30,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:30,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:37:30,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:30,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 02:37:30,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:30,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:30,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:30,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:30,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:30,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:30,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:37:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:30,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:30,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:30,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:37:30,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:30,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 02:37:30,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:30,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:30,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:30,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:30,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-14 02:37:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:30,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:30,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:30,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 02:37:30,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:30,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 02:37:30,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:30,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:37:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 02:37:30,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:30,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-14 02:37:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:30,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:30,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:30,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 02:37:30,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:30,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 02:37:30,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:30,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:37:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:37:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:37:30,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1233 backedges. 652 proven. 2 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2020-10-14 02:37:31,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209860401] [2020-10-14 02:37:31,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:37:31,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:37:31,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500302025] [2020-10-14 02:37:31,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:37:31,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:37:31,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:37:31,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:37:31,072 INFO L87 Difference]: Start difference. First operand 24482 states and 27297 transitions. Second operand 7 states. [2020-10-14 02:37:35,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:37:35,203 INFO L93 Difference]: Finished difference Result 48235 states and 53791 transitions. [2020-10-14 02:37:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:37:35,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 609 [2020-10-14 02:37:35,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:37:35,241 INFO L225 Difference]: With dead ends: 48235 [2020-10-14 02:37:35,241 INFO L226 Difference]: Without dead ends: 24533 [2020-10-14 02:37:35,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:37:35,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24533 states. [2020-10-14 02:37:35,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24533 to 24276. [2020-10-14 02:37:35,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24276 states. [2020-10-14 02:37:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24276 states to 24276 states and 26908 transitions. [2020-10-14 02:37:35,551 INFO L78 Accepts]: Start accepts. Automaton has 24276 states and 26908 transitions. Word has length 609 [2020-10-14 02:37:35,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:37:35,551 INFO L479 AbstractCegarLoop]: Abstraction has 24276 states and 26908 transitions. [2020-10-14 02:37:35,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:37:35,551 INFO L276 IsEmpty]: Start isEmpty. Operand 24276 states and 26908 transitions. [2020-10-14 02:37:35,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2020-10-14 02:37:35,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:37:35,567 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:37:35,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 02:37:35,567 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:37:35,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:37:35,567 INFO L82 PathProgramCache]: Analyzing trace with hash -204891948, now seen corresponding path program 1 times [2020-10-14 02:37:35,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:37:35,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542790740] [2020-10-14 02:37:35,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:37:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:35,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:36,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:37,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:38,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:40,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:40,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 639 [2020-10-14 02:37:40,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:37:40,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-14 02:37:40,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:40,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:40,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 02:37:40,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-14 02:37:40,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 324 [2020-10-14 02:37:40,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:40,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:37:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:40,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:40,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:37:40,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:40,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:37:40,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:40,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:40,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:40,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:40,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:37:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:40,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:40,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:40,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:37:40,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:40,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:37:40,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:40,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:40,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:40,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:40,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:40,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:40,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:37:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:41,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:41,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:41,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:37:41,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:41,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 02:37:41,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:41,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:37:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:37:41,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:41,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:37:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:41,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:41,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:41,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:37:41,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:41,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 02:37:41,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:41,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:37:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:37:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:37:41,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:41,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-14 02:37:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:41,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:41,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:41,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:37:41,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:41,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-14 02:37:41,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:41,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:37:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:37:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:37:41,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:41,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-10-14 02:37:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:41,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:41,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:41,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:41,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:37:41,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:37:41,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 02:37:41,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:41,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:37:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:37:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:37:41,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:42,193 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2020-10-14 02:37:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1212 backedges. 844 proven. 144 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-14 02:37:42,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542790740] [2020-10-14 02:37:42,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:37:42,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 02:37:42,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229770302] [2020-10-14 02:37:42,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 02:37:42,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:37:42,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 02:37:42,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 02:37:42,872 INFO L87 Difference]: Start difference. First operand 24276 states and 26908 transitions. Second operand 10 states. [2020-10-14 02:37:43,347 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-14 02:37:45,120 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-14 02:37:45,648 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-14 02:37:46,750 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-14 02:37:48,445 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-14 02:37:48,844 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-14 02:37:49,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:37:49,162 INFO L93 Difference]: Finished difference Result 47952 states and 53257 transitions. [2020-10-14 02:37:49,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 02:37:49,164 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 621 [2020-10-14 02:37:49,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:37:49,217 INFO L225 Difference]: With dead ends: 47952 [2020-10-14 02:37:49,217 INFO L226 Difference]: Without dead ends: 25324 [2020-10-14 02:37:49,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2020-10-14 02:37:49,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25324 states. [2020-10-14 02:37:49,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25324 to 24273. [2020-10-14 02:37:49,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24273 states. [2020-10-14 02:37:49,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24273 states to 24273 states and 26835 transitions. [2020-10-14 02:37:49,537 INFO L78 Accepts]: Start accepts. Automaton has 24273 states and 26835 transitions. Word has length 621 [2020-10-14 02:37:49,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:37:49,537 INFO L479 AbstractCegarLoop]: Abstraction has 24273 states and 26835 transitions. [2020-10-14 02:37:49,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 02:37:49,537 INFO L276 IsEmpty]: Start isEmpty. Operand 24273 states and 26835 transitions. [2020-10-14 02:37:49,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2020-10-14 02:37:49,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:37:49,553 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 02:37:49,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 02:37:49,553 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:37:49,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:37:49,554 INFO L82 PathProgramCache]: Analyzing trace with hash 942463749, now seen corresponding path program 1 times [2020-10-14 02:37:49,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:37:49,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026055533] [2020-10-14 02:37:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:37:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:49,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:49,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:51,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:51,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:51,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 659 [2020-10-14 02:37:51,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:37:51,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2134 [2020-10-14 02:37:51,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:51,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:37:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 441 [2020-10-14 02:37:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 02:37:51,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:51,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:37:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:51,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:51,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:37:51,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:51,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:37:51,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:51,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:51,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:51,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:51,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:51,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:51,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:37:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:51,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:51,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:51,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:37:51,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:51,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 02:37:51,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:51,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:51,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:51,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:37:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:51,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:51,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:51,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 02:37:51,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:51,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 02:37:51,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:51,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:37:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:37:51,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:52,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 02:37:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:52,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:52,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:52,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 02:37:52,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:52,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 02:37:52,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:52,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:52,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:37:52,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:52,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 02:37:52,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:52,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-10-14 02:37:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:52,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:52,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:52,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 02:37:52,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:52,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 02:37:52,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:52,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:52,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:37:52,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:37:52,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 02:37:52,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:37:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 641 proven. 2 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-10-14 02:37:52,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026055533] [2020-10-14 02:37:52,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:37:52,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:37:52,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831112606] [2020-10-14 02:37:52,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:37:52,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:37:52,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:37:52,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:37:52,626 INFO L87 Difference]: Start difference. First operand 24273 states and 26835 transitions. Second operand 7 states. [2020-10-14 02:37:56,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:37:56,475 INFO L93 Difference]: Finished difference Result 48046 states and 53171 transitions. [2020-10-14 02:37:56,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:37:56,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 643 [2020-10-14 02:37:56,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:37:56,514 INFO L225 Difference]: With dead ends: 48046 [2020-10-14 02:37:56,514 INFO L226 Difference]: Without dead ends: 25127 [2020-10-14 02:37:56,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:37:56,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25127 states. [2020-10-14 02:37:56,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25127 to 24501. [2020-10-14 02:37:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24501 states. [2020-10-14 02:37:56,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24501 states to 24501 states and 26957 transitions. [2020-10-14 02:37:56,809 INFO L78 Accepts]: Start accepts. Automaton has 24501 states and 26957 transitions. Word has length 643 [2020-10-14 02:37:56,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:37:56,809 INFO L479 AbstractCegarLoop]: Abstraction has 24501 states and 26957 transitions. [2020-10-14 02:37:56,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:37:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 24501 states and 26957 transitions. [2020-10-14 02:37:56,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2020-10-14 02:37:56,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:37:56,832 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 02:37:56,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 02:37:56,832 INFO L427 AbstractCegarLoop]: === Iteration 32 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:37:56,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:37:56,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1857146181, now seen corresponding path program 1 times [2020-10-14 02:37:56,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:37:56,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490565203] [2020-10-14 02:37:56,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:37:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:56,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:57,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:57,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:57,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking...