/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:02:01,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:02:01,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:02:01,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:02:01,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:02:01,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:02:01,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:02:01,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:02:01,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:02:01,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:02:01,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:02:01,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:02:01,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:02:01,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:02:01,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:02:01,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:02:01,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:02:01,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:02:01,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:02:01,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:02:01,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:02:01,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:02:01,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:02:01,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:02:01,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:02:01,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:02:01,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:02:01,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:02:01,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:02:01,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:02:01,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:02:01,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:02:01,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:02:01,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:02:01,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:02:01,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:02:01,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:02:01,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:02:01,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:02:01,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:02:01,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:02:01,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:02:01,334 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:02:01,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:02:01,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:02:01,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:02:01,337 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:02:01,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:02:01,337 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:02:01,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:02:01,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:02:01,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:02:01,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:02:01,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:02:01,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:02:01,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:02:01,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:02:01,339 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:02:01,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:02:01,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:02:01,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:02:01,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:02:01,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:02:01,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:02:01,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:02:01,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:02:01,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:02:01,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:02:01,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:02:01,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:02:01,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:02:01,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:02:01,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:02:01,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:02:01,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:02:01,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:02:01,686 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:02:01,687 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label31.c [2020-10-14 04:02:01,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77640e5fe/c5678a1c59f64170895dcd2387c46af8/FLAG904fd83ee [2020-10-14 04:02:02,564 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:02:02,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label31.c [2020-10-14 04:02:02,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77640e5fe/c5678a1c59f64170895dcd2387c46af8/FLAG904fd83ee [2020-10-14 04:02:02,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77640e5fe/c5678a1c59f64170895dcd2387c46af8 [2020-10-14 04:02:02,664 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:02:02,666 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:02:02,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:02:02,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:02:02,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:02:02,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:02:02" (1/1) ... [2020-10-14 04:02:02,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef001ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:02, skipping insertion in model container [2020-10-14 04:02:02,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:02:02" (1/1) ... [2020-10-14 04:02:02,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:02:02,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:02:04,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:02:04,077 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:02:04,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:02:04,579 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:02:04,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04 WrapperNode [2020-10-14 04:02:04,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:02:04,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:02:04,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:02:04,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:02:04,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (1/1) ... [2020-10-14 04:02:04,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (1/1) ... [2020-10-14 04:02:04,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (1/1) ... [2020-10-14 04:02:04,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (1/1) ... [2020-10-14 04:02:04,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (1/1) ... [2020-10-14 04:02:04,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (1/1) ... [2020-10-14 04:02:04,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (1/1) ... [2020-10-14 04:02:04,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:02:04,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:02:04,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:02:04,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:02:04,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:02:04,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:02:04,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:02:04,929 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:02:04,929 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:02:04,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:02:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:02:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:02:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:02:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:02:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:02:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:02:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:02:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:02:14,325 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:02:14,327 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:02:14,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:02:14 BoogieIcfgContainer [2020-10-14 04:02:14,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:02:14,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:02:14,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:02:14,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:02:14,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:02:02" (1/3) ... [2020-10-14 04:02:14,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5be4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:02:14, skipping insertion in model container [2020-10-14 04:02:14,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (2/3) ... [2020-10-14 04:02:14,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5be4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:02:14, skipping insertion in model container [2020-10-14 04:02:14,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:02:14" (3/3) ... [2020-10-14 04:02:14,357 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label31.c [2020-10-14 04:02:14,374 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:02:14,391 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:02:14,410 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:02:14,455 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:02:14,455 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:02:14,455 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:02:14,455 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:02:14,456 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:02:14,456 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:02:14,456 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:02:14,456 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:02:14,514 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:02:14,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 04:02:14,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:14,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:02:14,527 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:14,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:14,537 INFO L82 PathProgramCache]: Analyzing trace with hash -46686471, now seen corresponding path program 1 times [2020-10-14 04:02:14,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:14,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713244186] [2020-10-14 04:02:14,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:14,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:15,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:15,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 04:02:15,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:15,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-14 04:02:15,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:15,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:02:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:02:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:02:15,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:02:15,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:15,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:15,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:15,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:15,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:15,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:02:15,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:15,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:15,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:15,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:15,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:02:15,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:02:15,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713244186] [2020-10-14 04:02:15,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:02:15,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:02:15,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544878890] [2020-10-14 04:02:15,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:02:15,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:15,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:02:15,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:02:15,429 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 04:02:28,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:02:28,451 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-14 04:02:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:02:28,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 04:02:28,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:02:28,550 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 04:02:28,550 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 04:02:28,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 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 04:02:28,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 04:02:28,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-14 04:02:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-14 04:02:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-14 04:02:28,684 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 14 [2020-10-14 04:02:28,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:02:28,685 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-14 04:02:28,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:02:28,685 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-14 04:02:28,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 04:02:28,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:28,689 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:02:28,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:02:28,690 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:28,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:28,690 INFO L82 PathProgramCache]: Analyzing trace with hash -668197308, now seen corresponding path program 1 times [2020-10-14 04:02:28,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:28,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31684252] [2020-10-14 04:02:28,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:28,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:29,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:29,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:30,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:30,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:02:30,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:02:30,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1283 [2020-10-14 04:02:30,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:30,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:30,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:02:30,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:02:30,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 04:02:30,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:02:30,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:30,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:30,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:30,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:30,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:30,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:02:30,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:30,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:30,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:02:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:02:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:02:30,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:02:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:30,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:30,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:30,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:02:30,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:30,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 04:02:30,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:30,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:30,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:30,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:30,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:02:30,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:02:30,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31684252] [2020-10-14 04:02:30,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:02:30,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:02:30,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614895533] [2020-10-14 04:02:30,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:02:30,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:30,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:02:30,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:02:30,384 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 5 states. [2020-10-14 04:02:40,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:02:40,572 INFO L93 Difference]: Finished difference Result 2864 states and 4440 transitions. [2020-10-14 04:02:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:02:40,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-14 04:02:40,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:02:40,584 INFO L225 Difference]: With dead ends: 2864 [2020-10-14 04:02:40,585 INFO L226 Difference]: Without dead ends: 1879 [2020-10-14 04:02:40,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:02:40,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2020-10-14 04:02:40,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1875. [2020-10-14 04:02:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1875 states. [2020-10-14 04:02:40,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2566 transitions. [2020-10-14 04:02:40,662 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2566 transitions. Word has length 85 [2020-10-14 04:02:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:02:40,663 INFO L479 AbstractCegarLoop]: Abstraction has 1875 states and 2566 transitions. [2020-10-14 04:02:40,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:02:40,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2566 transitions. [2020-10-14 04:02:40,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 04:02:40,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:40,667 INFO L422 BasicCegarLoop]: trace histogram [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 04:02:40,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:02:40,667 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:40,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:40,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1839741392, now seen corresponding path program 1 times [2020-10-14 04:02:40,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:40,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33907144] [2020-10-14 04:02:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:40,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:41,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:41,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:02:41,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:41,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-14 04:02:41,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:41,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:41,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:02:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:02:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 04:02:41,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:41,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:41,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:41,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:41,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:41,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:41,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:02:41,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:41,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:02:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:41,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:02:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:41,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:41,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:41,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:02:41,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:41,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-14 04:02:41,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:41,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:41,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:02:41,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:02:41,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 04:02:41,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:02:41,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33907144] [2020-10-14 04:02:41,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:02:41,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:02:41,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934473909] [2020-10-14 04:02:41,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:02:41,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:41,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:02:41,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:02:41,750 INFO L87 Difference]: Start difference. First operand 1875 states and 2566 transitions. Second operand 8 states. [2020-10-14 04:03:09,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:09,091 INFO L93 Difference]: Finished difference Result 5622 states and 8123 transitions. [2020-10-14 04:03:09,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:03:09,092 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-14 04:03:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:09,125 INFO L225 Difference]: With dead ends: 5622 [2020-10-14 04:03:09,125 INFO L226 Difference]: Without dead ends: 4639 [2020-10-14 04:03:09,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:03:09,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4639 states. [2020-10-14 04:03:09,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4639 to 3714. [2020-10-14 04:03:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3714 states. [2020-10-14 04:03:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 5118 transitions. [2020-10-14 04:03:09,310 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 5118 transitions. Word has length 88 [2020-10-14 04:03:09,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:09,311 INFO L479 AbstractCegarLoop]: Abstraction has 3714 states and 5118 transitions. [2020-10-14 04:03:09,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:03:09,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 5118 transitions. [2020-10-14 04:03:09,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 04:03:09,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:09,314 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:03:09,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:03:09,319 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:09,319 INFO L82 PathProgramCache]: Analyzing trace with hash -893166540, now seen corresponding path program 1 times [2020-10-14 04:03:09,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:09,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308728608] [2020-10-14 04:03:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:09,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:09,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:10,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:10,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:03:10,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:03:10,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-10-14 04:03:10,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:10,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:10,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 04:03:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 04:03:10,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 04:03:10,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:10,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:10,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:10,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:10,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:10,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:03:10,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:10,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:10,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:10,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:10,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:10,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:10,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:03:10,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:10,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 04:03:10,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:10,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:10,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:10,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:10,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:03:10,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:03:10,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308728608] [2020-10-14 04:03:10,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:10,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:03:10,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294571137] [2020-10-14 04:03:10,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:03:10,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:10,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:03:10,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:03:10,570 INFO L87 Difference]: Start difference. First operand 3714 states and 5118 transitions. Second operand 5 states. [2020-10-14 04:03:26,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:26,321 INFO L93 Difference]: Finished difference Result 7464 states and 11032 transitions. [2020-10-14 04:03:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:03:26,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-14 04:03:26,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:26,354 INFO L225 Difference]: With dead ends: 7464 [2020-10-14 04:03:26,354 INFO L226 Difference]: Without dead ends: 5520 [2020-10-14 04:03:26,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:03:26,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5520 states. [2020-10-14 04:03:26,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5520 to 5500. [2020-10-14 04:03:26,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5500 states. [2020-10-14 04:03:26,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5500 states to 5500 states and 7531 transitions. [2020-10-14 04:03:26,543 INFO L78 Accepts]: Start accepts. Automaton has 5500 states and 7531 transitions. Word has length 93 [2020-10-14 04:03:26,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:26,546 INFO L479 AbstractCegarLoop]: Abstraction has 5500 states and 7531 transitions. [2020-10-14 04:03:26,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:03:26,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5500 states and 7531 transitions. [2020-10-14 04:03:26,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 04:03:26,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:26,557 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:03:26,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:03:26,558 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:26,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:26,558 INFO L82 PathProgramCache]: Analyzing trace with hash -609402326, now seen corresponding path program 1 times [2020-10-14 04:03:26,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:26,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651866008] [2020-10-14 04:03:26,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:26,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:26,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:27,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:27,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 04:03:27,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:03:27,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1100 [2020-10-14 04:03:27,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:27,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:27,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:27,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 04:03:27,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 04:03:27,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:27,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:27,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:27,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:27,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:27,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:27,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:03:27,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:27,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:27,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:27,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:27,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:28,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:28,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:03:28,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 04:03:28,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:28,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:03:28,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:03:28,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651866008] [2020-10-14 04:03:28,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:28,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:03:28,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884815706] [2020-10-14 04:03:28,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:03:28,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:28,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:03:28,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:03:28,113 INFO L87 Difference]: Start difference. First operand 5500 states and 7531 transitions. Second operand 5 states. [2020-10-14 04:03:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:55,738 INFO L93 Difference]: Finished difference Result 13661 states and 19632 transitions. [2020-10-14 04:03:55,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:03:55,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-14 04:03:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:55,794 INFO L225 Difference]: With dead ends: 13661 [2020-10-14 04:03:55,794 INFO L226 Difference]: Without dead ends: 9928 [2020-10-14 04:03:55,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:03:55,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9928 states. [2020-10-14 04:03:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9928 to 8167. [2020-10-14 04:03:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8167 states. [2020-10-14 04:03:56,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8167 states to 8167 states and 11886 transitions. [2020-10-14 04:03:56,124 INFO L78 Accepts]: Start accepts. Automaton has 8167 states and 11886 transitions. Word has length 116 [2020-10-14 04:03:56,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:56,126 INFO L479 AbstractCegarLoop]: Abstraction has 8167 states and 11886 transitions. [2020-10-14 04:03:56,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:03:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 8167 states and 11886 transitions. [2020-10-14 04:03:56,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 04:03:56,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:56,131 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:03:56,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:03:56,132 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:56,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:56,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1339584181, now seen corresponding path program 1 times [2020-10-14 04:03:56,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:56,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369773265] [2020-10-14 04:03:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:56,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:56,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:57,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:58,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:58,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 04:03:58,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:03:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2019 [2020-10-14 04:03:58,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:58,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 04:03:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 04:03:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:58,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:58,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:58,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:58,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:58,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:58,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:03:58,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:58,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:58,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:58,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:58,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:58,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:58,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:58,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:03:58,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:58,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 04:03:58,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:58,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:03:58,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:58,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 04:03:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:58,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:58,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:03:58,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:58,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 04:03:58,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:58,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:03:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 04:03:58,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:58,801 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:03:58,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369773265] [2020-10-14 04:03:58,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:58,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:03:58,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7445494] [2020-10-14 04:03:58,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:03:58,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:58,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:03:58,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:03:58,806 INFO L87 Difference]: Start difference. First operand 8167 states and 11886 transitions. Second operand 7 states. [2020-10-14 04:04:42,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:04:42,423 INFO L93 Difference]: Finished difference Result 19909 states and 32311 transitions. [2020-10-14 04:04:42,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:04:42,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-10-14 04:04:42,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:04:42,520 INFO L225 Difference]: With dead ends: 19909 [2020-10-14 04:04:42,520 INFO L226 Difference]: Without dead ends: 14388 [2020-10-14 04:04:42,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:04:42,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14388 states. [2020-10-14 04:04:42,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14388 to 13364. [2020-10-14 04:04:42,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13364 states. [2020-10-14 04:04:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13364 states to 13364 states and 20011 transitions. [2020-10-14 04:04:42,966 INFO L78 Accepts]: Start accepts. Automaton has 13364 states and 20011 transitions. Word has length 167 [2020-10-14 04:04:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:04:42,967 INFO L479 AbstractCegarLoop]: Abstraction has 13364 states and 20011 transitions. [2020-10-14 04:04:42,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:04:42,967 INFO L276 IsEmpty]: Start isEmpty. Operand 13364 states and 20011 transitions. [2020-10-14 04:04:42,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 04:04:42,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:42,973 INFO L422 BasicCegarLoop]: trace histogram [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 04:04:42,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:04:42,974 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:42,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:42,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1847957390, now seen corresponding path program 1 times [2020-10-14 04:04:42,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:42,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249076959] [2020-10-14 04:04:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:43,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:43,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:44,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:44,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:44,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 04:04:44,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:04:44,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1652 [2020-10-14 04:04:44,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:44,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:04:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-14 04:04:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 04:04:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:44,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:04:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:44,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:44,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:44,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:04:44,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:44,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:04:44,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:44,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:44,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:04:44,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:44,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:04:44,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:44,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:04:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:44,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:45,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:45,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 04:04:45,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:45,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 04:04:45,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:45,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:45,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:04:45,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:45,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 04:04:45,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:04:45,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249076959] [2020-10-14 04:04:45,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:04:45,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:04:45,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773035669] [2020-10-14 04:04:45,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:04:45,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:04:45,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:04:45,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:04:45,144 INFO L87 Difference]: Start difference. First operand 13364 states and 20011 transitions. Second operand 5 states. [2020-10-14 04:05:02,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:05:02,759 INFO L93 Difference]: Finished difference Result 32081 states and 49246 transitions. [2020-10-14 04:05:02,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:05:02,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-14 04:05:02,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:05:02,851 INFO L225 Difference]: With dead ends: 32081 [2020-10-14 04:05:02,851 INFO L226 Difference]: Without dead ends: 19156 [2020-10-14 04:05:02,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:05:02,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19156 states. [2020-10-14 04:05:03,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19156 to 16095. [2020-10-14 04:05:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16095 states. [2020-10-14 04:05:03,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16095 states to 16095 states and 24307 transitions. [2020-10-14 04:05:03,516 INFO L78 Accepts]: Start accepts. Automaton has 16095 states and 24307 transitions. Word has length 169 [2020-10-14 04:05:03,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:05:03,517 INFO L479 AbstractCegarLoop]: Abstraction has 16095 states and 24307 transitions. [2020-10-14 04:05:03,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:05:03,517 INFO L276 IsEmpty]: Start isEmpty. Operand 16095 states and 24307 transitions. [2020-10-14 04:05:03,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 04:05:03,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:05:03,525 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:05:03,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:05:03,526 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:05:03,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:05:03,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1857053703, now seen corresponding path program 1 times [2020-10-14 04:05:03,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:05:03,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486315903] [2020-10-14 04:05:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:05:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:03,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:03,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:05,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:05,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 04:05:05,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:05:05,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2360 [2020-10-14 04:05:05,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:05,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:05:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:05:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 04:05:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:06,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:06,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:06,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:06,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:06,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:06,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:05:06,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:06,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:05:06,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:05:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:06,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:06,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:06,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:05:06,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:06,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 04:05:06,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:06,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:06,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:06,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:05:06,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 04:05:06,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 04:05:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:06,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:06,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:06,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:05:06,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:06,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 04:05:06,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:06,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 04:05:06,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:06,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:06,487 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 04:05:06,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486315903] [2020-10-14 04:05:06,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:05:06,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:05:06,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944278854] [2020-10-14 04:05:06,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:05:06,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:06,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:05:06,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:05:06,491 INFO L87 Difference]: Start difference. First operand 16095 states and 24307 transitions. Second operand 7 states. [2020-10-14 04:05:26,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:05:26,844 INFO L93 Difference]: Finished difference Result 34593 states and 52678 transitions. [2020-10-14 04:05:26,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:05:26,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-10-14 04:05:26,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:05:26,876 INFO L225 Difference]: With dead ends: 34593 [2020-10-14 04:05:26,876 INFO L226 Difference]: Without dead ends: 13011 [2020-10-14 04:05:26,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:05:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13011 states. [2020-10-14 04:05:27,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13011 to 12035. [2020-10-14 04:05:27,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12035 states. [2020-10-14 04:05:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12035 states to 12035 states and 15483 transitions. [2020-10-14 04:05:27,167 INFO L78 Accepts]: Start accepts. Automaton has 12035 states and 15483 transitions. Word has length 185 [2020-10-14 04:05:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:05:27,168 INFO L479 AbstractCegarLoop]: Abstraction has 12035 states and 15483 transitions. [2020-10-14 04:05:27,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:05:27,168 INFO L276 IsEmpty]: Start isEmpty. Operand 12035 states and 15483 transitions. [2020-10-14 04:05:27,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-14 04:05:27,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:05:27,172 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:05:27,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:05:27,173 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:05:27,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:05:27,173 INFO L82 PathProgramCache]: Analyzing trace with hash -725051464, now seen corresponding path program 1 times [2020-10-14 04:05:27,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:05:27,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760738834] [2020-10-14 04:05:27,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:05:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:27,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:27,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:28,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:30,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:30,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 04:05:30,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:05:30,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2858 [2020-10-14 04:05:30,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:30,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-14 04:05:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:05:30,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:05:30,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:30,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:30,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:30,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:30,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:30,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:05:30,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:30,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:30,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:30,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:30,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:30,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:30,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:05:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:30,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:30,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:30,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:05:30,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:30,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:05:30,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:30,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:30,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:30,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:30,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:30,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:30,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:05:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:30,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:30,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:30,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:05:30,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:30,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 04:05:30,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:30,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:30,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:30,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:30,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:05:30,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:30,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-14 04:05:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:30,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:30,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:30,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:05:30,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:30,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 04:05:30,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:30,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:30,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:30,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:05:30,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:05:30,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 04:05:30,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760738834] [2020-10-14 04:05:30,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:05:30,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:05:30,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559532674] [2020-10-14 04:05:30,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:05:30,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:30,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:05:30,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:05:30,777 INFO L87 Difference]: Start difference. First operand 12035 states and 15483 transitions. Second operand 7 states. [2020-10-14 04:05:50,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:05:50,915 INFO L93 Difference]: Finished difference Result 26899 states and 35278 transitions. [2020-10-14 04:05:50,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:05:50,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-14 04:05:50,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:05:50,953 INFO L225 Difference]: With dead ends: 26899 [2020-10-14 04:05:50,953 INFO L226 Difference]: Without dead ends: 14870 [2020-10-14 04:05:50,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:05:50,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14870 states. [2020-10-14 04:05:51,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14870 to 14355. [2020-10-14 04:05:51,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14355 states. [2020-10-14 04:05:51,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14355 states to 14355 states and 18434 transitions. [2020-10-14 04:05:51,266 INFO L78 Accepts]: Start accepts. Automaton has 14355 states and 18434 transitions. Word has length 245 [2020-10-14 04:05:51,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:05:51,266 INFO L479 AbstractCegarLoop]: Abstraction has 14355 states and 18434 transitions. [2020-10-14 04:05:51,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:05:51,267 INFO L276 IsEmpty]: Start isEmpty. Operand 14355 states and 18434 transitions. [2020-10-14 04:05:51,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-14 04:05:51,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:05:51,273 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:05:51,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:05:51,274 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:05:51,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:05:51,274 INFO L82 PathProgramCache]: Analyzing trace with hash -301134916, now seen corresponding path program 1 times [2020-10-14 04:05:51,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:05:51,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072229446] [2020-10-14 04:05:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:05:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:51,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:51,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:51,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:55,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:55,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-14 04:05:55,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:05:55,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4641 [2020-10-14 04:05:55,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:55,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:55,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:55,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:05:55,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 04:05:55,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:05:56,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:56,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:56,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:56,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:56,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:56,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:05:56,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:56,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:56,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:56,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:56,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:56,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:56,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:05:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:56,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:56,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:56,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:05:56,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:56,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 04:05:56,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:56,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:56,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:56,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:56,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:05:56,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:56,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:05:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:56,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:56,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:56,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 04:05:56,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:56,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 04:05:56,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:56,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:56,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:56,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:05:56,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 04:05:56,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:56,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-14 04:05:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:56,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:56,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:56,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:05:56,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:56,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 04:05:56,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:56,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:56,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:56,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 04:05:56,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:56,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 109 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 04:05:57,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072229446] [2020-10-14 04:05:57,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:05:57,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:05:57,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470181711] [2020-10-14 04:05:57,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:05:57,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:57,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:05:57,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:05:57,162 INFO L87 Difference]: Start difference. First operand 14355 states and 18434 transitions. Second operand 7 states.