/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:27:59,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:27:59,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:27:59,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:27:59,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:27:59,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:27:59,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:27:59,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:27:59,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:27:59,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:27:59,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:27:59,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:27:59,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:27:59,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:27:59,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:27:59,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:27:59,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:27:59,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:27:59,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:27:59,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:27:59,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:27:59,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:27:59,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:27:59,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:27:59,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:27:59,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:27:59,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:27:59,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:27:59,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:27:59,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:27:59,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:27:59,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:27:59,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:27:59,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:27:59,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:27:59,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:27:59,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:27:59,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:27:59,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:27:59,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:27:59,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:27:59,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 03:27:59,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:27:59,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:27:59,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:27:59,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:27:59,352 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:27:59,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:27:59,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:27:59,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:27:59,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:27:59,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:27:59,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:27:59,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:27:59,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:27:59,355 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:27:59,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:27:59,356 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:27:59,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:27:59,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:27:59,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:27:59,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:27:59,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:27:59,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:27:59,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:27:59,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:27:59,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:27:59,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:27:59,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:27:59,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:27:59,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:27:59,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:27:59,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:27:59,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:27:59,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:27:59,721 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:27:59,722 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:27:59,722 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label23.c [2020-10-14 03:27:59,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a099d51df/91c25e371a46464b8891d3320151f62f/FLAG53ee5faf8 [2020-10-14 03:28:00,374 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:28:00,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label23.c [2020-10-14 03:28:00,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a099d51df/91c25e371a46464b8891d3320151f62f/FLAG53ee5faf8 [2020-10-14 03:28:00,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a099d51df/91c25e371a46464b8891d3320151f62f [2020-10-14 03:28:00,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:28:00,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:28:00,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:28:00,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:28:00,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:28:00,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:28:00" (1/1) ... [2020-10-14 03:28:00,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30829a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:00, skipping insertion in model container [2020-10-14 03:28:00,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:28:00" (1/1) ... [2020-10-14 03:28:00,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:28:00,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:28:01,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:28:01,904 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:28:02,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:28:02,246 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:28:02,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:02 WrapperNode [2020-10-14 03:28:02,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:28:02,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:28:02,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:28:02,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:28:02,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:02" (1/1) ... [2020-10-14 03:28:02,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:02" (1/1) ... [2020-10-14 03:28:02,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:02" (1/1) ... [2020-10-14 03:28:02,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:02" (1/1) ... [2020-10-14 03:28:02,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:02" (1/1) ... [2020-10-14 03:28:02,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:02" (1/1) ... [2020-10-14 03:28:02,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:02" (1/1) ... [2020-10-14 03:28:02,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:28:02,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:28:02,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:28:02,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:28:02,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:28:02,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:28:02,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:28:02,558 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:28:02,558 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:28:02,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:28:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:28:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:28:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:28:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:28:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:28:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:28:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:28:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:28:08,434 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:28:08,434 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:28:08,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:28:08 BoogieIcfgContainer [2020-10-14 03:28:08,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:28:08,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:28:08,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:28:08,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:28:08,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:28:00" (1/3) ... [2020-10-14 03:28:08,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b6b4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:28:08, skipping insertion in model container [2020-10-14 03:28:08,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:28:02" (2/3) ... [2020-10-14 03:28:08,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b6b4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:28:08, skipping insertion in model container [2020-10-14 03:28:08,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:28:08" (3/3) ... [2020-10-14 03:28:08,453 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label23.c [2020-10-14 03:28:08,466 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:28:08,475 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:28:08,493 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:28:08,524 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:28:08,524 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:28:08,524 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:28:08,525 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:28:08,525 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:28:08,525 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:28:08,525 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:28:08,525 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:28:08,554 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:28:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 03:28:08,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:08,561 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] [2020-10-14 03:28:08,562 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:08,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:08,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1150521477, now seen corresponding path program 1 times [2020-10-14 03:28:08,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:08,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514392005] [2020-10-14 03:28:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:08,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:08,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:08,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 03:28:08,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:08,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-14 03:28:08,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:08,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:08,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:28:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:28:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 03:28:08,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:28:09,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:09,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:09,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:09,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:09,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:09,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:28:09,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:09,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:09,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:28:09,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:28:09,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514392005] [2020-10-14 03:28:09,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:28:09,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:28:09,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579382175] [2020-10-14 03:28:09,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:28:09,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:09,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:28:09,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:28:09,140 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:28:17,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:17,166 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-14 03:28:17,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:28:17,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-14 03:28:17,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:17,190 INFO L225 Difference]: With dead ends: 1224 [2020-10-14 03:28:17,190 INFO L226 Difference]: Without dead ends: 708 [2020-10-14 03:28:17,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:28:17,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-14 03:28:17,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-14 03:28:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-14 03:28:17,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-14 03:28:17,308 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 23 [2020-10-14 03:28:17,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:17,309 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-14 03:28:17,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:28:17,309 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-14 03:28:17,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 03:28:17,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:17,315 INFO L422 BasicCegarLoop]: trace histogram [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 03:28:17,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:28:17,315 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:17,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:17,316 INFO L82 PathProgramCache]: Analyzing trace with hash -2119615099, now seen corresponding path program 1 times [2020-10-14 03:28:17,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:17,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189222307] [2020-10-14 03:28:17,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:17,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:17,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:18,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:18,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:18,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 03:28:18,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:28:18,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1151 [2020-10-14 03:28:18,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:18,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:18,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:18,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:28:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 03:28:18,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:28:18,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:18,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:18,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:18,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:18,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:18,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:28:18,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:18,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:18,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:18,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:28:18,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:18,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:18,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:18,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:28:18,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:18,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 03:28:18,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:18,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:28:18,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:28:18,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189222307] [2020-10-14 03:28:18,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:18,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:28:18,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777972001] [2020-10-14 03:28:18,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:28:18,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:18,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:28:18,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:28:18,793 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 5 states. [2020-10-14 03:28:24,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:24,776 INFO L93 Difference]: Finished difference Result 1695 states and 2713 transitions. [2020-10-14 03:28:24,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:28:24,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-14 03:28:24,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:24,784 INFO L225 Difference]: With dead ends: 1695 [2020-10-14 03:28:24,784 INFO L226 Difference]: Without dead ends: 1007 [2020-10-14 03:28:24,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:28:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-10-14 03:28:24,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 1005. [2020-10-14 03:28:24,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-10-14 03:28:24,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1362 transitions. [2020-10-14 03:28:24,839 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1362 transitions. Word has length 93 [2020-10-14 03:28:24,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:24,840 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1362 transitions. [2020-10-14 03:28:24,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:28:24,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1362 transitions. [2020-10-14 03:28:24,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 03:28:24,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:24,853 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:28:24,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:28:24,855 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:24,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:24,855 INFO L82 PathProgramCache]: Analyzing trace with hash -226815323, now seen corresponding path program 1 times [2020-10-14 03:28:24,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:24,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382964685] [2020-10-14 03:28:24,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:24,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:25,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:25,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:25,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 03:28:25,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:28:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 996 [2020-10-14 03:28:25,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:25,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 03:28:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 03:28:25,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:26,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:26,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:26,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:26,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:26,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:26,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:28:26,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:26,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:26,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:26,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:26,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:26,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:28:26,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:26,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:26,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:26,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:28:26,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:26,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 03:28:26,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:26,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:26,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:28:26,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:26,234 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:28:26,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382964685] [2020-10-14 03:28:26,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:26,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:28:26,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327908052] [2020-10-14 03:28:26,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:28:26,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:26,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:28:26,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:28:26,237 INFO L87 Difference]: Start difference. First operand 1005 states and 1362 transitions. Second operand 5 states. [2020-10-14 03:28:34,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:34,420 INFO L93 Difference]: Finished difference Result 2017 states and 2942 transitions. [2020-10-14 03:28:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:28:34,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 03:28:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:34,430 INFO L225 Difference]: With dead ends: 2017 [2020-10-14 03:28:34,430 INFO L226 Difference]: Without dead ends: 1327 [2020-10-14 03:28:34,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:28:34,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2020-10-14 03:28:34,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1327. [2020-10-14 03:28:34,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1327 states. [2020-10-14 03:28:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1744 transitions. [2020-10-14 03:28:34,483 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1744 transitions. Word has length 106 [2020-10-14 03:28:34,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:34,485 INFO L479 AbstractCegarLoop]: Abstraction has 1327 states and 1744 transitions. [2020-10-14 03:28:34,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:28:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1744 transitions. [2020-10-14 03:28:34,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 03:28:34,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:34,497 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:28:34,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:28:34,498 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:34,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:34,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1591811176, now seen corresponding path program 1 times [2020-10-14 03:28:34,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:34,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099877274] [2020-10-14 03:28:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:34,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:34,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:35,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:35,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 03:28:35,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:28:35,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1209 [2020-10-14 03:28:35,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:35,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 03:28:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 03:28:35,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:28:35,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:35,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:35,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:35,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:35,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:35,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:28:35,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:35,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:35,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:35,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:36,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:36,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:28:36,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:36,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 03:28:36,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:36,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:28:36,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:28:36,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099877274] [2020-10-14 03:28:36,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:36,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:28:36,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034759827] [2020-10-14 03:28:36,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:28:36,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:36,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:28:36,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:28:36,104 INFO L87 Difference]: Start difference. First operand 1327 states and 1744 transitions. Second operand 5 states. [2020-10-14 03:28:42,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:42,632 INFO L93 Difference]: Finished difference Result 3270 states and 4442 transitions. [2020-10-14 03:28:42,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:28:42,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-14 03:28:42,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:42,650 INFO L225 Difference]: With dead ends: 3270 [2020-10-14 03:28:42,650 INFO L226 Difference]: Without dead ends: 2258 [2020-10-14 03:28:42,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:28:42,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2020-10-14 03:28:42,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2256. [2020-10-14 03:28:42,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2256 states. [2020-10-14 03:28:42,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 2774 transitions. [2020-10-14 03:28:42,710 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 2774 transitions. Word has length 139 [2020-10-14 03:28:42,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:42,711 INFO L479 AbstractCegarLoop]: Abstraction has 2256 states and 2774 transitions. [2020-10-14 03:28:42,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:28:42,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 2774 transitions. [2020-10-14 03:28:42,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 03:28:42,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:42,713 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:28:42,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:28:42,714 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:42,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:42,714 INFO L82 PathProgramCache]: Analyzing trace with hash -390205976, now seen corresponding path program 1 times [2020-10-14 03:28:42,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:42,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726116200] [2020-10-14 03:28:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:42,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:42,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:43,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:43,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:43,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:43,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 03:28:43,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:28:43,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1222 [2020-10-14 03:28:43,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:43,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:43,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:43,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 03:28:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 03:28:43,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:44,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:44,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:44,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:44,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:44,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:44,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:28:44,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:44,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:44,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:44,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:44,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:44,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:44,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:44,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:44,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:44,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:28:44,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:44,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 03:28:44,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:44,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:44,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:44,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:44,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 03:28:44,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 03:28:44,307 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:28:44,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726116200] [2020-10-14 03:28:44,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:44,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:28:44,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845134232] [2020-10-14 03:28:44,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:28:44,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:44,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:28:44,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:28:44,313 INFO L87 Difference]: Start difference. First operand 2256 states and 2774 transitions. Second operand 5 states. [2020-10-14 03:28:52,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:52,937 INFO L93 Difference]: Finished difference Result 5129 states and 6526 transitions. [2020-10-14 03:28:52,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:28:52,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-14 03:28:52,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:52,961 INFO L225 Difference]: With dead ends: 5129 [2020-10-14 03:28:52,962 INFO L226 Difference]: Without dead ends: 3188 [2020-10-14 03:28:52,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:28:52,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3188 states. [2020-10-14 03:28:53,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3188 to 3188. [2020-10-14 03:28:53,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3188 states. [2020-10-14 03:28:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 3823 transitions. [2020-10-14 03:28:53,053 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 3823 transitions. Word has length 146 [2020-10-14 03:28:53,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:53,055 INFO L479 AbstractCegarLoop]: Abstraction has 3188 states and 3823 transitions. [2020-10-14 03:28:53,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:28:53,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 3823 transitions. [2020-10-14 03:28:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 03:28:53,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:53,058 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:28:53,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:28:53,058 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:53,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:53,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1346617725, now seen corresponding path program 1 times [2020-10-14 03:28:53,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:53,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308736728] [2020-10-14 03:28:53,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:53,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:53,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:54,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:54,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 03:28:54,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:28:54,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1066 [2020-10-14 03:28:54,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:54,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:54,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 03:28:54,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 03:28:54,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:54,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:54,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:54,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:54,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:54,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:54,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:28:54,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:54,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:54,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:54,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:54,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:54,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:54,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:54,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:54,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:54,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:28:54,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:54,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 03:28:54,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:54,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:28:54,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:28:54,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308736728] [2020-10-14 03:28:54,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:54,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:28:54,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047237351] [2020-10-14 03:28:54,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:28:54,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:54,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:28:54,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:28:54,488 INFO L87 Difference]: Start difference. First operand 3188 states and 3823 transitions. Second operand 5 states. [2020-10-14 03:29:02,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:02,382 INFO L93 Difference]: Finished difference Result 8561 states and 10468 transitions. [2020-10-14 03:29:02,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:29:02,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-14 03:29:02,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:02,409 INFO L225 Difference]: With dead ends: 8561 [2020-10-14 03:29:02,409 INFO L226 Difference]: Without dead ends: 5688 [2020-10-14 03:29:02,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:29:02,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5688 states. [2020-10-14 03:29:02,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5688 to 5368. [2020-10-14 03:29:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5368 states. [2020-10-14 03:29:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 6521 transitions. [2020-10-14 03:29:02,556 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 6521 transitions. Word has length 152 [2020-10-14 03:29:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:02,557 INFO L479 AbstractCegarLoop]: Abstraction has 5368 states and 6521 transitions. [2020-10-14 03:29:02,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:29:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 6521 transitions. [2020-10-14 03:29:02,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 03:29:02,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:02,561 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:29:02,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:29:02,561 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:02,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:02,562 INFO L82 PathProgramCache]: Analyzing trace with hash -239459015, now seen corresponding path program 1 times [2020-10-14 03:29:02,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:02,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312573775] [2020-10-14 03:29:02,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:02,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:02,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:03,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:03,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 03:29:03,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:29:03,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1261 [2020-10-14 03:29:03,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:03,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 03:29:03,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 03:29:03,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:03,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:03,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:03,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:03,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:03,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:03,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:29:03,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:03,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:03,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:03,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:03,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:03,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:03,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:04,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:04,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:04,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:29:04,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:04,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 03:29:04,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:04,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 03:29:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:29:04,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312573775] [2020-10-14 03:29:04,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:04,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:29:04,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317718069] [2020-10-14 03:29:04,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:29:04,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:04,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:29:04,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:29:04,449 INFO L87 Difference]: Start difference. First operand 5368 states and 6521 transitions. Second operand 5 states. [2020-10-14 03:29:16,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:16,808 INFO L93 Difference]: Finished difference Result 12614 states and 15553 transitions. [2020-10-14 03:29:16,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:29:16,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-14 03:29:16,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:16,845 INFO L225 Difference]: With dead ends: 12614 [2020-10-14 03:29:16,845 INFO L226 Difference]: Without dead ends: 7560 [2020-10-14 03:29:16,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:29:16,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7560 states. [2020-10-14 03:29:17,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7560 to 7242. [2020-10-14 03:29:17,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7242 states. [2020-10-14 03:29:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 8910 transitions. [2020-10-14 03:29:17,040 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 8910 transitions. Word has length 166 [2020-10-14 03:29:17,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:17,040 INFO L479 AbstractCegarLoop]: Abstraction has 7242 states and 8910 transitions. [2020-10-14 03:29:17,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:29:17,041 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 8910 transitions. [2020-10-14 03:29:17,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-14 03:29:17,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:17,046 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:29:17,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:29:17,047 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:17,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:17,047 INFO L82 PathProgramCache]: Analyzing trace with hash 315927466, now seen corresponding path program 1 times [2020-10-14 03:29:17,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:17,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116106951] [2020-10-14 03:29:17,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:17,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:17,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:17,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:18,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:18,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:19,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:22,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:22,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-14 03:29:22,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:29:22,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 03:29:22,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:22,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:29:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:29:22,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:22,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:22,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:22,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:22,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:22,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:22,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:29:22,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:22,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:22,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:22,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:22,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:22,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:22,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:29:22,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:22,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 03:29:22,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:22,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:22,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:22,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:22,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:29:22,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:22,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 03:29:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:22,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:22,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:22,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:29:22,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:22,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 03:29:22,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:22,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:29:22,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:29:22,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116106951] [2020-10-14 03:29:22,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:22,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:22,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79977309] [2020-10-14 03:29:22,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:29:22,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:22,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:29:22,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:29:22,806 INFO L87 Difference]: Start difference. First operand 7242 states and 8910 transitions. Second operand 7 states. [2020-10-14 03:29:40,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:40,344 INFO L93 Difference]: Finished difference Result 24651 states and 32425 transitions. [2020-10-14 03:29:40,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:29:40,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-14 03:29:40,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:40,416 INFO L225 Difference]: With dead ends: 24651 [2020-10-14 03:29:40,416 INFO L226 Difference]: Without dead ends: 15840 [2020-10-14 03:29:40,447 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 03:29:40,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15840 states. [2020-10-14 03:29:40,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15840 to 15392. [2020-10-14 03:29:40,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15392 states. [2020-10-14 03:29:40,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15392 states to 15392 states and 18920 transitions. [2020-10-14 03:29:40,977 INFO L78 Accepts]: Start accepts. Automaton has 15392 states and 18920 transitions. Word has length 216 [2020-10-14 03:29:40,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:40,978 INFO L479 AbstractCegarLoop]: Abstraction has 15392 states and 18920 transitions. [2020-10-14 03:29:40,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:29:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand 15392 states and 18920 transitions. [2020-10-14 03:29:40,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 03:29:40,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:40,985 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:29:40,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:29:40,986 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:40,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:40,986 INFO L82 PathProgramCache]: Analyzing trace with hash 244851354, now seen corresponding path program 1 times [2020-10-14 03:29:40,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:40,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611552445] [2020-10-14 03:29:40,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:41,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:41,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:41,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:42,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:43,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:43,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:46,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:46,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-14 03:29:46,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:29:46,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 03:29:46,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:46,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:46,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:46,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:29:46,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:29:46,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:46,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:46,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:46,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:46,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:46,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:29:46,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:46,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:46,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:46,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:46,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:46,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:46,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:46,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:46,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:46,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:29:46,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:46,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 03:29:46,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:46,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:29:46,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:46,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 03:29:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:46,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:46,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:46,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:29:46,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:46,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 03:29:46,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:46,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:29:46,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:29:46,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611552445] [2020-10-14 03:29:46,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:46,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:46,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197812814] [2020-10-14 03:29:46,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:29:46,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:46,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:29:46,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:29:46,821 INFO L87 Difference]: Start difference. First operand 15392 states and 18920 transitions. Second operand 7 states. [2020-10-14 03:30:00,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:00,144 INFO L93 Difference]: Finished difference Result 32972 states and 42289 transitions. [2020-10-14 03:30:00,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:30:00,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-10-14 03:30:00,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:00,234 INFO L225 Difference]: With dead ends: 32972 [2020-10-14 03:30:00,234 INFO L226 Difference]: Without dead ends: 20010 [2020-10-14 03:30:00,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:30:00,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20010 states. [2020-10-14 03:30:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20010 to 19422. [2020-10-14 03:30:00,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19422 states. [2020-10-14 03:30:00,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19422 states to 19422 states and 23041 transitions. [2020-10-14 03:30:00,727 INFO L78 Accepts]: Start accepts. Automaton has 19422 states and 23041 transitions. Word has length 221 [2020-10-14 03:30:00,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:00,728 INFO L479 AbstractCegarLoop]: Abstraction has 19422 states and 23041 transitions. [2020-10-14 03:30:00,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:30:00,728 INFO L276 IsEmpty]: Start isEmpty. Operand 19422 states and 23041 transitions. [2020-10-14 03:30:00,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 03:30:00,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:00,734 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:30:00,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:30:00,735 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:00,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:00,735 INFO L82 PathProgramCache]: Analyzing trace with hash -2034264888, now seen corresponding path program 1 times [2020-10-14 03:30:00,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:00,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227830596] [2020-10-14 03:30:00,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:00,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:00,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:01,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:02,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:02,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-14 03:30:02,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:30:02,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2121 [2020-10-14 03:30:02,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:02,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:30:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 03:30:02,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:02,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:02,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:02,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:02,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:02,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:02,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:30:02,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:02,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:03,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:03,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:03,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:03,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:03,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:30:03,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:03,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-14 03:30:03,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:03,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:03,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:30:03,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:30:03,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227830596] [2020-10-14 03:30:03,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:03,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:30:03,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524423070] [2020-10-14 03:30:03,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:30:03,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:03,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:30:03,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:30:03,730 INFO L87 Difference]: Start difference. First operand 19422 states and 23041 transitions. Second operand 5 states. [2020-10-14 03:30:12,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:12,712 INFO L93 Difference]: Finished difference Result 43422 states and 51670 transitions. [2020-10-14 03:30:12,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:30:12,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-14 03:30:12,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:12,799 INFO L225 Difference]: With dead ends: 43422 [2020-10-14 03:30:12,799 INFO L226 Difference]: Without dead ends: 24349 [2020-10-14 03:30:12,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:30:12,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24349 states. [2020-10-14 03:30:13,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24349 to 21275. [2020-10-14 03:30:13,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21275 states. [2020-10-14 03:30:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21275 states to 21275 states and 25069 transitions. [2020-10-14 03:30:13,554 INFO L78 Accepts]: Start accepts. Automaton has 21275 states and 25069 transitions. Word has length 223 [2020-10-14 03:30:13,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:13,555 INFO L479 AbstractCegarLoop]: Abstraction has 21275 states and 25069 transitions. [2020-10-14 03:30:13,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:30:13,555 INFO L276 IsEmpty]: Start isEmpty. Operand 21275 states and 25069 transitions. [2020-10-14 03:30:13,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-14 03:30:13,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:13,564 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:30:13,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:30:13,565 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:13,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:13,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1027285565, now seen corresponding path program 1 times [2020-10-14 03:30:13,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:13,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700633693] [2020-10-14 03:30:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:15,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:18,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:18,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-14 03:30:18,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:30:18,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4684 [2020-10-14 03:30:18,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:18,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:18,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:18,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:30:18,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 03:30:18,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:18,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:18,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:18,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:18,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:18,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:30:18,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:18,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:18,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:18,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:18,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:18,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:30:18,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-14 03:30:18,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:18,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:30:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:18,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:30:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:18,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:18,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:18,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 03:30:18,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:18,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 03:30:18,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:18,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:30:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 03:30:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:30:19,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700633693] [2020-10-14 03:30:19,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:19,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:30:19,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969769264] [2020-10-14 03:30:19,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:30:19,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:19,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:30:19,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:30:19,060 INFO L87 Difference]: Start difference. First operand 21275 states and 25069 transitions. Second operand 7 states. [2020-10-14 03:30:29,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:29,047 INFO L93 Difference]: Finished difference Result 51388 states and 62311 transitions. [2020-10-14 03:30:29,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:30:29,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2020-10-14 03:30:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:29,160 INFO L225 Difference]: With dead ends: 51388 [2020-10-14 03:30:29,161 INFO L226 Difference]: Without dead ends: 30426 [2020-10-14 03:30:29,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 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 03:30:29,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30426 states. [2020-10-14 03:30:29,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30426 to 25172. [2020-10-14 03:30:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25172 states. [2020-10-14 03:30:29,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25172 states to 25172 states and 29806 transitions. [2020-10-14 03:30:29,776 INFO L78 Accepts]: Start accepts. Automaton has 25172 states and 29806 transitions. Word has length 319 [2020-10-14 03:30:29,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:29,777 INFO L479 AbstractCegarLoop]: Abstraction has 25172 states and 29806 transitions. [2020-10-14 03:30:29,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:30:29,777 INFO L276 IsEmpty]: Start isEmpty. Operand 25172 states and 29806 transitions. [2020-10-14 03:30:29,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-14 03:30:29,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:29,792 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:30:29,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:30:29,792 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:29,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:29,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1202048252, now seen corresponding path program 1 times [2020-10-14 03:30:29,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:29,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254167803] [2020-10-14 03:30:29,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:29,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:30,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:30,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:30,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:31,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:32,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:32,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:34,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:34,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-14 03:30:34,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 03:30:34,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 03:30:34,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:34,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:30:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:30:34,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:34,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:34,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:34,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:34,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:34,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:34,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:30:34,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:34,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:35,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:35,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:35,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:35,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:30:35,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:35,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 03:30:35,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:35,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:30:35,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:35,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:30:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:35,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:35,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:35,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:30:35,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:35,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 03:30:35,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:35,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:35,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:35,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:30:35,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:30:35,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:35,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-14 03:30:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:35,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:35,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:35,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:30:35,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:35,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 03:30:35,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:35,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 03:30:35,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:35,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 144 proven. 96 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-14 03:30:35,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254167803] [2020-10-14 03:30:35,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:35,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:30:35,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826634007] [2020-10-14 03:30:35,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:30:35,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:35,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:30:35,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:30:35,640 INFO L87 Difference]: Start difference. First operand 25172 states and 29806 transitions. Second operand 7 states. [2020-10-14 03:30:46,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:46,260 INFO L93 Difference]: Finished difference Result 48462 states and 57119 transitions. [2020-10-14 03:30:46,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:30:46,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 340 [2020-10-14 03:30:46,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:46,329 INFO L225 Difference]: With dead ends: 48462 [2020-10-14 03:30:46,330 INFO L226 Difference]: Without dead ends: 22079 [2020-10-14 03:30:46,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 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 03:30:46,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22079 states. [2020-10-14 03:30:46,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22079 to 19576. [2020-10-14 03:30:46,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19576 states. [2020-10-14 03:30:46,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19576 states to 19576 states and 22310 transitions. [2020-10-14 03:30:46,808 INFO L78 Accepts]: Start accepts. Automaton has 19576 states and 22310 transitions. Word has length 340 [2020-10-14 03:30:46,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:46,808 INFO L479 AbstractCegarLoop]: Abstraction has 19576 states and 22310 transitions. [2020-10-14 03:30:46,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:30:46,809 INFO L276 IsEmpty]: Start isEmpty. Operand 19576 states and 22310 transitions. [2020-10-14 03:30:46,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-14 03:30:46,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:46,817 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:30:46,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:30:46,818 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:46,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:46,818 INFO L82 PathProgramCache]: Analyzing trace with hash -286827052, now seen corresponding path program 1 times [2020-10-14 03:30:46,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:46,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814382189] [2020-10-14 03:30:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:46,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:47,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:47,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:47,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:51,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:51,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-14 03:30:51,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:30:51,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 03:30:51,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:51,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:30:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:30:51,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:52,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:52,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:52,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:52,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:52,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:30:52,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:52,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:52,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:52,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:52,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:52,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:52,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:52,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:52,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:52,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:30:52,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:52,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-14 03:30:52,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:52,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:52,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:30:52,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:52,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:30:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:52,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:52,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:52,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:30:52,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:52,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-14 03:30:52,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:52,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:52,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:52,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:30:52,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:30:52,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:53,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-14 03:30:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:53,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:53,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:53,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 03:30:53,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:53,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 03:30:53,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:53,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:53,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 03:30:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:53,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 160 proven. 100 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-14 03:30:53,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814382189] [2020-10-14 03:30:53,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:53,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:30:53,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986472462] [2020-10-14 03:30:53,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:30:53,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:53,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:30:53,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:30:53,725 INFO L87 Difference]: Start difference. First operand 19576 states and 22310 transitions. Second operand 7 states. [2020-10-14 03:31:04,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:31:04,096 INFO L93 Difference]: Finished difference Result 47255 states and 54594 transitions. [2020-10-14 03:31:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:31:04,098 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 435 [2020-10-14 03:31:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:31:04,145 INFO L225 Difference]: With dead ends: 47255 [2020-10-14 03:31:04,146 INFO L226 Difference]: Without dead ends: 27685 [2020-10-14 03:31:04,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:31:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27685 states. [2020-10-14 03:31:04,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27685 to 23960. [2020-10-14 03:31:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23960 states. [2020-10-14 03:31:04,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23960 states to 23960 states and 27586 transitions. [2020-10-14 03:31:04,683 INFO L78 Accepts]: Start accepts. Automaton has 23960 states and 27586 transitions. Word has length 435 [2020-10-14 03:31:04,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:31:04,684 INFO L479 AbstractCegarLoop]: Abstraction has 23960 states and 27586 transitions. [2020-10-14 03:31:04,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:31:04,685 INFO L276 IsEmpty]: Start isEmpty. Operand 23960 states and 27586 transitions. [2020-10-14 03:31:04,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-10-14 03:31:04,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:31:04,700 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:31:04,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:31:04,700 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:31:04,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:31:04,701 INFO L82 PathProgramCache]: Analyzing trace with hash -224779876, now seen corresponding path program 1 times [2020-10-14 03:31:04,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:31:04,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109932004] [2020-10-14 03:31:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:31:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:05,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:05,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:08,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:10,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:10,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 519 [2020-10-14 03:31:10,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:31:10,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 03:31:10,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:10,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:31:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-14 03:31:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 03:31:10,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:10,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:31:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:10,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:10,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:10,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:31:10,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:10,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:31:10,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:10,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:10,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:10,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:10,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:10,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:31:10,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:31:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:10,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:10,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:10,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:31:10,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:10,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 03:31:10,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:10,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:10,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:10,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:10,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:10,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:31:10,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:31:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:10,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:10,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:10,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:31:10,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 03:31:10,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:10,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:31:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:31:10,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:31:10,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-14 03:31:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:10,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:10,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:10,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:31:10,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:10,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 03:31:10,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:10,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:31:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:31:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 03:31:10,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 255 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 03:31:11,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109932004] [2020-10-14 03:31:11,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:31:11,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:31:11,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566107798] [2020-10-14 03:31:11,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:31:11,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:31:11,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:31:11,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:31:11,073 INFO L87 Difference]: Start difference. First operand 23960 states and 27586 transitions. Second operand 7 states. [2020-10-14 03:31:22,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:31:22,694 INFO L93 Difference]: Finished difference Result 50728 states and 58502 transitions. [2020-10-14 03:31:22,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:31:22,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 505 [2020-10-14 03:31:22,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:31:22,744 INFO L225 Difference]: With dead ends: 50728 [2020-10-14 03:31:22,744 INFO L226 Difference]: Without dead ends: 26774 [2020-10-14 03:31:22,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:31:22,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26774 states. [2020-10-14 03:31:23,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26774 to 26122. [2020-10-14 03:31:23,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26122 states. [2020-10-14 03:31:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26122 states to 26122 states and 29877 transitions. [2020-10-14 03:31:23,164 INFO L78 Accepts]: Start accepts. Automaton has 26122 states and 29877 transitions. Word has length 505 [2020-10-14 03:31:23,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:31:23,165 INFO L479 AbstractCegarLoop]: Abstraction has 26122 states and 29877 transitions. [2020-10-14 03:31:23,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:31:23,165 INFO L276 IsEmpty]: Start isEmpty. Operand 26122 states and 29877 transitions. [2020-10-14 03:31:23,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-14 03:31:23,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:31:23,182 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:31:23,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:31:23,183 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:31:23,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:31:23,183 INFO L82 PathProgramCache]: Analyzing trace with hash -504680427, now seen corresponding path program 1 times [2020-10-14 03:31:23,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:31:23,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344522861] [2020-10-14 03:31:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:31:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:23,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:24,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:28,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:28,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 520 [2020-10-14 03:31:28,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:31:28,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 03:31:28,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:28,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:28,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:31:28,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 371 [2020-10-14 03:31:28,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 03:31:28,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:28,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:31:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:28,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:28,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:28,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:31:28,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:28,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:31:28,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:28,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:28,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:28,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:31:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:28,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:28,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:28,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:31:28,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:28,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 03:31:28,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:28,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:28,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:28,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:28,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:28,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:28,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:31:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:28,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:28,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:28,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:31:28,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:28,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:31:28,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:28,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:31:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:31:28,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:31:28,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-14 03:31:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:28,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:28,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:28,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 03:31:28,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 03:31:28,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:28,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:31:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:31:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 03:31:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 254 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 03:31:29,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344522861] [2020-10-14 03:31:29,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:31:29,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:31:29,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550276992] [2020-10-14 03:31:29,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:31:29,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:31:29,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:31:29,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:31:29,101 INFO L87 Difference]: Start difference. First operand 26122 states and 29877 transitions. Second operand 7 states. [2020-10-14 03:31:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:31:37,492 INFO L93 Difference]: Finished difference Result 59550 states and 69910 transitions. [2020-10-14 03:31:37,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:31:37,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 506 [2020-10-14 03:31:37,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:31:37,557 INFO L225 Difference]: With dead ends: 59550 [2020-10-14 03:31:37,557 INFO L226 Difference]: Without dead ends: 29712 [2020-10-14 03:31:37,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 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 03:31:37,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29712 states. [2020-10-14 03:31:38,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29712 to 28913. [2020-10-14 03:31:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28913 states. [2020-10-14 03:31:38,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28913 states to 28913 states and 32889 transitions. [2020-10-14 03:31:38,225 INFO L78 Accepts]: Start accepts. Automaton has 28913 states and 32889 transitions. Word has length 506 [2020-10-14 03:31:38,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:31:38,226 INFO L479 AbstractCegarLoop]: Abstraction has 28913 states and 32889 transitions. [2020-10-14 03:31:38,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:31:38,226 INFO L276 IsEmpty]: Start isEmpty. Operand 28913 states and 32889 transitions. [2020-10-14 03:31:38,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-10-14 03:31:38,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:31:38,236 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:31:38,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 03:31:38,237 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:31:38,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:31:38,237 INFO L82 PathProgramCache]: Analyzing trace with hash 926602849, now seen corresponding path program 1 times [2020-10-14 03:31:38,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:31:38,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701550282] [2020-10-14 03:31:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:31:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:38,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:38,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:39,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:41,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:41,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 522 [2020-10-14 03:31:41,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:31:41,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3212 [2020-10-14 03:31:41,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:41,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:41,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:31:41,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-14 03:31:41,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 03:31:41,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:41,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:31:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:41,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:41,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:41,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:31:41,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:41,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:31:41,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:41,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:41,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:41,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:41,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:41,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:31:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:41,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:41,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:41,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:31:41,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:41,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 03:31:41,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:41,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:31:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:31:41,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:41,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:31:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:41,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:41,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:31:41,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:41,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 03:31:41,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:41,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:31:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:31:41,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:31:41,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-14 03:31:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:41,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking...