/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_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:55:59,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:55:59,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:55:59,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:55:59,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:55:59,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:55:59,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:55:59,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:55:59,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:55:59,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:55:59,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:55:59,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:55:59,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:55:59,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:55:59,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:55:59,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:55:59,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:55:59,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:55:59,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:55:59,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:55:59,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:55:59,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:55:59,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:55:59,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:55:59,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:55:59,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:55:59,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:55:59,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:55:59,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:55:59,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:55:59,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:55:59,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:55:59,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:55:59,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:55:59,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:55:59,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:55:59,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:55:59,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:55:59,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:55:59,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:55:59,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:55:59,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 03:55:59,502 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:55:59,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:55:59,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:55:59,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:55:59,509 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:55:59,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:55:59,510 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:55:59,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:55:59,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:55:59,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:55:59,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:55:59,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:55:59,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:55:59,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:55:59,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:55:59,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:55:59,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:55:59,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:55:59,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:55:59,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:55:59,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:55:59,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:55:59,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:55:59,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:55:59,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:55:59,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:55:59,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:55:59,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:55:59,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:55:59,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:55:59,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:55:59,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:55:59,877 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:55:59,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:55:59,880 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:55:59,881 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label09.c [2020-10-14 03:55:59,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/507d88b65/9be2359eb4fa4a398c040ae83f90a46b/FLAG1916ae0e5 [2020-10-14 03:56:00,667 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:56:00,668 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label09.c [2020-10-14 03:56:00,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/507d88b65/9be2359eb4fa4a398c040ae83f90a46b/FLAG1916ae0e5 [2020-10-14 03:56:00,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/507d88b65/9be2359eb4fa4a398c040ae83f90a46b [2020-10-14 03:56:00,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:56:00,855 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:56:00,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:56:00,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:56:00,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:56:00,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:56:00" (1/1) ... [2020-10-14 03:56:00,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee2931e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:00, skipping insertion in model container [2020-10-14 03:56:00,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:56:00" (1/1) ... [2020-10-14 03:56:00,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:56:00,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:56:02,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:56:02,575 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:56:03,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:56:03,077 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:56:03,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:03 WrapperNode [2020-10-14 03:56:03,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:56:03,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:56:03,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:56:03,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:56:03,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:03" (1/1) ... [2020-10-14 03:56:03,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:03" (1/1) ... [2020-10-14 03:56:03,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:03" (1/1) ... [2020-10-14 03:56:03,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:03" (1/1) ... [2020-10-14 03:56:03,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:03" (1/1) ... [2020-10-14 03:56:03,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:03" (1/1) ... [2020-10-14 03:56:03,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:03" (1/1) ... [2020-10-14 03:56:03,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:56:03,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:56:03,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:56:03,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:56:03,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:56:03,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:56:03,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:56:03,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:56:03,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:56:03,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:56:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:56:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:56:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:56:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:56:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:56:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:56:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:56:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:56:10,106 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:56:10,107 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:56:10,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:56:10 BoogieIcfgContainer [2020-10-14 03:56:10,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:56:10,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:56:10,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:56:10,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:56:10,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:56:00" (1/3) ... [2020-10-14 03:56:10,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46334f92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:56:10, skipping insertion in model container [2020-10-14 03:56:10,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:03" (2/3) ... [2020-10-14 03:56:10,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46334f92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:56:10, skipping insertion in model container [2020-10-14 03:56:10,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:56:10" (3/3) ... [2020-10-14 03:56:10,127 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label09.c [2020-10-14 03:56:10,141 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:56:10,151 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:56:10,167 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:56:10,197 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:56:10,198 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:56:10,198 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:56:10,198 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:56:10,198 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:56:10,198 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:56:10,199 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:56:10,199 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:56:10,235 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 03:56:10,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 03:56:10,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:10,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:56:10,244 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:10,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:10,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1387148041, now seen corresponding path program 1 times [2020-10-14 03:56:10,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:10,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515897303] [2020-10-14 03:56:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:10,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:10,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:10,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 03:56:10,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:10,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-14 03:56:10,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:10,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:56:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:56:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 03:56:10,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:56:10,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:10,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:10,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:10,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:10,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:10,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 03:56:10,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:10,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:10,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:10,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:56:10,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:56:10,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515897303] [2020-10-14 03:56:10,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:56:10,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:56:10,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864704861] [2020-10-14 03:56:10,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:56:10,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:10,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:56:10,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:56:10,895 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 03:56:20,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:56:20,948 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 03:56:20,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:56:20,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 03:56:20,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:56:20,975 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 03:56:20,975 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 03:56:20,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:56:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 03:56:21,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 03:56:21,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 03:56:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 03:56:21,105 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 18 [2020-10-14 03:56:21,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:56:21,106 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 03:56:21,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:56:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 03:56:21,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 03:56:21,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:21,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:56:21,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:56:21,112 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:21,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:21,112 INFO L82 PathProgramCache]: Analyzing trace with hash 73876756, now seen corresponding path program 1 times [2020-10-14 03:56:21,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:21,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191198191] [2020-10-14 03:56:21,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:21,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:21,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:22,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:22,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:22,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 03:56:22,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:56:22,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1180 [2020-10-14 03:56:22,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:22,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:22,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:22,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 03:56:22,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 03:56:22,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:56:22,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:22,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:22,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:22,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:22,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:22,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:56:22,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:22,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:22,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:56:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:22,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:22,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:22,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:56:22,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:22,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 03:56:22,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:22,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:22,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:22,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:22,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:56:22,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:56:22,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191198191] [2020-10-14 03:56:22,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:56:22,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:56:22,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81895463] [2020-10-14 03:56:22,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:56:22,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:22,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:56:22,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:56:22,695 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 5 states. [2020-10-14 03:56:40,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:56:40,782 INFO L93 Difference]: Finished difference Result 2920 states and 4544 transitions. [2020-10-14 03:56:40,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:56:40,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-14 03:56:40,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:56:40,804 INFO L225 Difference]: With dead ends: 2920 [2020-10-14 03:56:40,804 INFO L226 Difference]: Without dead ends: 1924 [2020-10-14 03:56:40,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:56:40,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2020-10-14 03:56:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1897. [2020-10-14 03:56:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1897 states. [2020-10-14 03:56:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 2704 transitions. [2020-10-14 03:56:40,900 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 2704 transitions. Word has length 89 [2020-10-14 03:56:40,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:56:40,901 INFO L479 AbstractCegarLoop]: Abstraction has 1897 states and 2704 transitions. [2020-10-14 03:56:40,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:56:40,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 2704 transitions. [2020-10-14 03:56:40,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 03:56:40,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:40,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:56:40,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:56:40,914 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:40,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:40,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1842646496, now seen corresponding path program 1 times [2020-10-14 03:56:40,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:40,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599111036] [2020-10-14 03:56:40,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:40,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:41,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:41,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 03:56:41,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:41,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 03:56:41,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:41,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:41,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:41,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:56:41,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 03:56:41,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:41,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:41,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:41,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:41,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:41,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:56:41,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:41,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:41,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:41,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:41,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:41,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:56:41,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:56:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:41,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:41,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:41,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:56:41,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:41,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 03:56:41,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:41,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:56:41,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:56:41,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599111036] [2020-10-14 03:56:41,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:56:41,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:56:41,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216974473] [2020-10-14 03:56:41,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:56:41,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:41,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:56:41,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:56:41,536 INFO L87 Difference]: Start difference. First operand 1897 states and 2704 transitions. Second operand 5 states. [2020-10-14 03:56:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:56:56,187 INFO L93 Difference]: Finished difference Result 4688 states and 6906 transitions. [2020-10-14 03:56:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:56:56,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-14 03:56:56,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:56:56,207 INFO L225 Difference]: With dead ends: 4688 [2020-10-14 03:56:56,208 INFO L226 Difference]: Without dead ends: 2797 [2020-10-14 03:56:56,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:56:56,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2020-10-14 03:56:56,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2791. [2020-10-14 03:56:56,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2791 states. [2020-10-14 03:56:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3820 transitions. [2020-10-14 03:56:56,296 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3820 transitions. Word has length 92 [2020-10-14 03:56:56,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:56:56,298 INFO L479 AbstractCegarLoop]: Abstraction has 2791 states and 3820 transitions. [2020-10-14 03:56:56,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:56:56,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3820 transitions. [2020-10-14 03:56:56,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 03:56:56,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:56,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:56:56,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:56:56,306 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:56,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:56,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1699109092, now seen corresponding path program 1 times [2020-10-14 03:56:56,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:56,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696854555] [2020-10-14 03:56:56,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:56,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:56,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:57,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:57,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:56:57,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:56:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-14 03:56:57,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:57,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 03:56:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 03:56:57,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:56:57,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:57,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:57,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:57,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:57,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:57,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:56:57,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:57,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:57,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:56:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:57,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:57,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:57,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:56:57,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:57,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 03:56:57,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:57,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:56:57,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:56:57,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696854555] [2020-10-14 03:56:57,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:56:57,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:56:57,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158382351] [2020-10-14 03:56:57,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:56:57,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:57,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:56:57,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:56:57,565 INFO L87 Difference]: Start difference. First operand 2791 states and 3820 transitions. Second operand 5 states. [2020-10-14 03:57:13,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:13,541 INFO L93 Difference]: Finished difference Result 7833 states and 10841 transitions. [2020-10-14 03:57:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:57:13,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-14 03:57:13,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:13,572 INFO L225 Difference]: With dead ends: 7833 [2020-10-14 03:57:13,572 INFO L226 Difference]: Without dead ends: 5048 [2020-10-14 03:57:13,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:57:13,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2020-10-14 03:57:13,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 5003. [2020-10-14 03:57:13,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5003 states. [2020-10-14 03:57:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5003 states to 5003 states and 6802 transitions. [2020-10-14 03:57:13,739 INFO L78 Accepts]: Start accepts. Automaton has 5003 states and 6802 transitions. Word has length 94 [2020-10-14 03:57:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:13,739 INFO L479 AbstractCegarLoop]: Abstraction has 5003 states and 6802 transitions. [2020-10-14 03:57:13,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:57:13,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5003 states and 6802 transitions. [2020-10-14 03:57:13,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 03:57:13,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:13,741 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:57:13,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:57:13,742 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:13,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:13,742 INFO L82 PathProgramCache]: Analyzing trace with hash -147207420, now seen corresponding path program 1 times [2020-10-14 03:57:13,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:13,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771312824] [2020-10-14 03:57:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:13,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:13,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:14,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:14,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 03:57:14,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:57:14,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-10-14 03:57:14,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:14,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:14,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 03:57:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 03:57:14,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:14,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:14,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:14,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:14,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:14,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:14,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:57:14,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:14,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:14,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:14,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:14,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:14,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:14,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:14,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:14,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:14,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:57:14,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:14,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 03:57:14,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:14,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:14,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:14,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:57:14,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:14,919 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:57:14,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771312824] [2020-10-14 03:57:14,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:57:14,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:57:14,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220327580] [2020-10-14 03:57:14,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:57:14,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:14,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:57:14,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:57:14,928 INFO L87 Difference]: Start difference. First operand 5003 states and 6802 transitions. Second operand 5 states. [2020-10-14 03:57:35,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:35,492 INFO L93 Difference]: Finished difference Result 11787 states and 16296 transitions. [2020-10-14 03:57:35,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:57:35,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-14 03:57:35,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:35,535 INFO L225 Difference]: With dead ends: 11787 [2020-10-14 03:57:35,535 INFO L226 Difference]: Without dead ends: 6790 [2020-10-14 03:57:35,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:57:35,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6790 states. [2020-10-14 03:57:35,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6790 to 6765. [2020-10-14 03:57:35,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6765 states. [2020-10-14 03:57:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6765 states to 6765 states and 9043 transitions. [2020-10-14 03:57:35,742 INFO L78 Accepts]: Start accepts. Automaton has 6765 states and 9043 transitions. Word has length 97 [2020-10-14 03:57:35,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:35,742 INFO L479 AbstractCegarLoop]: Abstraction has 6765 states and 9043 transitions. [2020-10-14 03:57:35,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:57:35,743 INFO L276 IsEmpty]: Start isEmpty. Operand 6765 states and 9043 transitions. [2020-10-14 03:57:35,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 03:57:35,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:35,747 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:57:35,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:57:35,747 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:35,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:35,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1850824000, now seen corresponding path program 1 times [2020-10-14 03:57:35,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:35,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255884834] [2020-10-14 03:57:35,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:35,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:36,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:36,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 03:57:36,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:57:36,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 821 [2020-10-14 03:57:36,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:36,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:36,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:36,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 03:57:36,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 03:57:36,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:36,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:36,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:36,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:36,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:36,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:36,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:57:36,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:36,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:36,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:36,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 58 [2020-10-14 03:57:36,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:36,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:36,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:36,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 03:57:36,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:36,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 03:57:36,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:36,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:36,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:57:36,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:57:36,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255884834] [2020-10-14 03:57:36,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:57:36,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:57:36,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403559212] [2020-10-14 03:57:36,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:57:36,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:36,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:57:36,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:57:36,944 INFO L87 Difference]: Start difference. First operand 6765 states and 9043 transitions. Second operand 5 states. [2020-10-14 03:57:55,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:55,427 INFO L93 Difference]: Finished difference Result 17492 states and 23736 transitions. [2020-10-14 03:57:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:57:55,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-14 03:57:55,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:55,474 INFO L225 Difference]: With dead ends: 17492 [2020-10-14 03:57:55,474 INFO L226 Difference]: Without dead ends: 10733 [2020-10-14 03:57:55,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:57:55,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10733 states. [2020-10-14 03:57:55,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10733 to 10725. [2020-10-14 03:57:55,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10725 states. [2020-10-14 03:57:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10725 states to 10725 states and 13520 transitions. [2020-10-14 03:57:55,735 INFO L78 Accepts]: Start accepts. Automaton has 10725 states and 13520 transitions. Word has length 115 [2020-10-14 03:57:55,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:55,735 INFO L479 AbstractCegarLoop]: Abstraction has 10725 states and 13520 transitions. [2020-10-14 03:57:55,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:57:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 10725 states and 13520 transitions. [2020-10-14 03:57:55,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 03:57:55,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:55,738 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:57:55,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:57:55,738 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:55,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:55,739 INFO L82 PathProgramCache]: Analyzing trace with hash 10141240, now seen corresponding path program 1 times [2020-10-14 03:57:55,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:55,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345836347] [2020-10-14 03:57:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:55,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:55,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:56,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:56,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:58,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:58,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:00,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:00,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:58:00,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:58:00,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 03:58:00,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:00,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:58:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 03:58:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 03:58:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:00,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:00,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:00,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:00,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:00,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:00,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:58:00,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:00,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:00,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:00,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:00,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:00,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:00,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:00,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:00,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:01,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:01,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:01,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 03:58:01,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:58:01,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-10-14 03:58:01,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:01,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:01,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:01,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:01,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 03:58:01,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:58:01,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345836347] [2020-10-14 03:58:01,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:01,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:58:01,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953927751] [2020-10-14 03:58:01,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:58:01,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:01,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:58:01,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:58:01,830 INFO L87 Difference]: Start difference. First operand 10725 states and 13520 transitions. Second operand 6 states. [2020-10-14 03:58:20,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:20,064 INFO L93 Difference]: Finished difference Result 31976 states and 42356 transitions. [2020-10-14 03:58:20,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:58:20,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-14 03:58:20,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:20,151 INFO L225 Difference]: With dead ends: 31976 [2020-10-14 03:58:20,152 INFO L226 Difference]: Without dead ends: 21257 [2020-10-14 03:58:20,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:58:20,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21257 states. [2020-10-14 03:58:20,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21257 to 19509. [2020-10-14 03:58:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19509 states. [2020-10-14 03:58:20,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19509 states to 19509 states and 24956 transitions. [2020-10-14 03:58:20,673 INFO L78 Accepts]: Start accepts. Automaton has 19509 states and 24956 transitions. Word has length 119 [2020-10-14 03:58:20,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:20,674 INFO L479 AbstractCegarLoop]: Abstraction has 19509 states and 24956 transitions. [2020-10-14 03:58:20,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:58:20,674 INFO L276 IsEmpty]: Start isEmpty. Operand 19509 states and 24956 transitions. [2020-10-14 03:58:20,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 03:58:20,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:20,681 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:58:20,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:58:20,682 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:20,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:20,682 INFO L82 PathProgramCache]: Analyzing trace with hash 986278892, now seen corresponding path program 1 times [2020-10-14 03:58:20,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:20,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666348963] [2020-10-14 03:58:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:20,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:20,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:20,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:23,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:25,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:25,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 03:58:25,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:58:25,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 03:58:25,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:25,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:58:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 03:58:25,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:25,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:25,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:25,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:25,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:25,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:58:25,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:25,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:25,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:25,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:58:25,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:26,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:26,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:58:26,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:26,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 03:58:26,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:26,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:58:26,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:26,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 03:58:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:26,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:26,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:26,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 03:58:26,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:26,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 03:58:26,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:26,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:26,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:26,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:58:26,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 03:58:26,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:58:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:58:26,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666348963] [2020-10-14 03:58:26,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:26,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:58:26,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995456721] [2020-10-14 03:58:26,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:58:26,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:26,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:58:26,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:58:26,414 INFO L87 Difference]: Start difference. First operand 19509 states and 24956 transitions. Second operand 7 states. [2020-10-14 03:58:46,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:46,285 INFO L93 Difference]: Finished difference Result 49711 states and 65240 transitions. [2020-10-14 03:58:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:58:46,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-10-14 03:58:46,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:46,359 INFO L225 Difference]: With dead ends: 49711 [2020-10-14 03:58:46,360 INFO L226 Difference]: Without dead ends: 19229 [2020-10-14 03:58:46,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:58:46,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19229 states. [2020-10-14 03:58:46,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19229 to 15742. [2020-10-14 03:58:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15742 states. [2020-10-14 03:58:46,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15742 states to 15742 states and 19532 transitions. [2020-10-14 03:58:46,892 INFO L78 Accepts]: Start accepts. Automaton has 15742 states and 19532 transitions. Word has length 184 [2020-10-14 03:58:46,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:46,893 INFO L479 AbstractCegarLoop]: Abstraction has 15742 states and 19532 transitions. [2020-10-14 03:58:46,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:58:46,894 INFO L276 IsEmpty]: Start isEmpty. Operand 15742 states and 19532 transitions. [2020-10-14 03:58:46,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-14 03:58:46,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:46,898 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:58:46,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:58:46,899 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:46,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:46,900 INFO L82 PathProgramCache]: Analyzing trace with hash -579600064, now seen corresponding path program 1 times [2020-10-14 03:58:46,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:46,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919684834] [2020-10-14 03:58:46,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:47,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:47,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:47,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 03:58:47,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:47,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-14 03:58:47,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:47,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:47,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 03:58:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 03:58:47,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:58:47,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:47,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:47,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:47,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:47,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:58:47,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:47,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:47,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:47,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:47,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:47,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:47,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:47,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:58:47,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:47,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 03:58:47,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:47,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:47,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:47,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:47,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:58:47,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:47,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:58:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:47,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:47,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:47,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 03:58:47,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:47,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 03:58:47,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:47,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:58:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 03:58:47,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:58:47,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919684834] [2020-10-14 03:58:47,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:47,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:58:47,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909431582] [2020-10-14 03:58:47,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:58:47,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:47,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:58:47,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:58:47,922 INFO L87 Difference]: Start difference. First operand 15742 states and 19532 transitions. Second operand 7 states. [2020-10-14 03:59:04,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:04,968 INFO L93 Difference]: Finished difference Result 37556 states and 47844 transitions. [2020-10-14 03:59:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:59:04,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-10-14 03:59:04,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:05,049 INFO L225 Difference]: With dead ends: 37556 [2020-10-14 03:59:05,050 INFO L226 Difference]: Without dead ends: 21820 [2020-10-14 03:59:05,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:59:05,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21820 states. [2020-10-14 03:59:05,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21820 to 21366. [2020-10-14 03:59:05,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21366 states. [2020-10-14 03:59:05,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21366 states to 21366 states and 25761 transitions. [2020-10-14 03:59:05,582 INFO L78 Accepts]: Start accepts. Automaton has 21366 states and 25761 transitions. Word has length 197 [2020-10-14 03:59:05,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:05,583 INFO L479 AbstractCegarLoop]: Abstraction has 21366 states and 25761 transitions. [2020-10-14 03:59:05,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:59:05,584 INFO L276 IsEmpty]: Start isEmpty. Operand 21366 states and 25761 transitions. [2020-10-14 03:59:05,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-14 03:59:05,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:05,591 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:59:05,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:59:05,592 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:05,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:05,592 INFO L82 PathProgramCache]: Analyzing trace with hash -729869686, now seen corresponding path program 1 times [2020-10-14 03:59:05,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:05,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675953264] [2020-10-14 03:59:05,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:05,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:06,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:07,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:07,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-14 03:59:07,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:59:07,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1968 [2020-10-14 03:59:07,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:07,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:07,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:07,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 03:59:07,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:59:07,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:07,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:07,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:07,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:07,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:07,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:07,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:59:07,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:07,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:07,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:07,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:07,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:07,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:07,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:07,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:07,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:07,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:59:07,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:07,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 03:59:07,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:07,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:07,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:07,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:59:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:08,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:08,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:59:08,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:08,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 03:59:08,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:08,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:59:08,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:08,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 03:59:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:08,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:08,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:08,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:59:08,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:08,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 03:59:08,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:08,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:59:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 03:59:08,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 03:59:08,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675953264] [2020-10-14 03:59:08,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:08,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:59:08,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213872992] [2020-10-14 03:59:08,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:59:08,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:08,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:59:08,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:59:08,660 INFO L87 Difference]: Start difference. First operand 21366 states and 25761 transitions. Second operand 7 states. [2020-10-14 03:59:39,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:39,851 INFO L93 Difference]: Finished difference Result 51310 states and 63632 transitions. [2020-10-14 03:59:39,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:59:39,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-14 03:59:39,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:39,975 INFO L225 Difference]: With dead ends: 51310 [2020-10-14 03:59:39,975 INFO L226 Difference]: Without dead ends: 29047 [2020-10-14 03:59:40,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:59:40,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29047 states. [2020-10-14 03:59:41,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29047 to 28578. [2020-10-14 03:59:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28578 states. [2020-10-14 03:59:41,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28578 states to 28578 states and 35164 transitions. [2020-10-14 03:59:41,798 INFO L78 Accepts]: Start accepts. Automaton has 28578 states and 35164 transitions. Word has length 294 [2020-10-14 03:59:41,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:41,799 INFO L479 AbstractCegarLoop]: Abstraction has 28578 states and 35164 transitions. [2020-10-14 03:59:41,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:59:41,800 INFO L276 IsEmpty]: Start isEmpty. Operand 28578 states and 35164 transitions. [2020-10-14 03:59:41,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-14 03:59:41,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:41,810 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:59:41,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:59:41,811 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:41,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:41,812 INFO L82 PathProgramCache]: Analyzing trace with hash 474770450, now seen corresponding path program 1 times [2020-10-14 03:59:41,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:41,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125308714] [2020-10-14 03:59:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:41,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:42,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:43,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:46,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:46,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-14 03:59:46,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:59:46,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4516 [2020-10-14 03:59:46,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:46,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 03:59:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 03:59:46,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:46,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:46,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:46,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:46,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:46,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:46,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:59:46,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:46,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:46,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:46,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:46,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:46,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:46,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:59:46,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:46,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 03:59:46,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:46,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:46,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:46,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:59:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:46,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:46,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:46,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:59:46,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:46,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 03:59:46,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:46,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:46,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:46,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:46,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:59:46,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 03:59:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:46,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:47,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:47,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 03:59:47,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:47,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-14 03:59:47,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:47,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:47,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:47,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:59:47,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 03:59:47,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 03:59:47,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125308714] [2020-10-14 03:59:47,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:47,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:59:47,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107159993] [2020-10-14 03:59:47,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:59:47,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:47,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:59:47,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:59:47,455 INFO L87 Difference]: Start difference. First operand 28578 states and 35164 transitions. Second operand 7 states.