/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem04_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:28:05,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:28:05,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:28:05,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:28:05,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:28:05,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:28:05,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:28:05,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:28:05,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:28:05,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:28:05,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:28:05,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:28:05,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:28:05,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:28:05,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:28:05,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:28:05,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:28:05,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:28:05,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:28:05,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:28:05,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:28:05,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:28:05,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:28:05,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:28:05,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:28:05,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:28:05,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:28:05,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:28:05,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:28:05,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:28:05,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:28:05,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:28:05,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:28:05,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:28:05,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:28:05,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:28:05,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:28:05,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:28:05,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:28:05,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:28:05,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:28:05,523 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 19:28:05,559 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:28:05,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:28:05,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:28:05,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:28:05,560 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:28:05,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:28:05,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:28:05,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:28:05,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:28:05,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:28:05,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:28:05,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:28:05,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:28:05,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:28:05,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:28:05,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:28:05,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:28:05,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:28:05,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:28:05,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:28:05,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:28:05,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:28:05,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:28:05,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:28:05,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:28:05,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:28:05,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:28:05,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:28:05,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:28:05,567 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:28:05,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:28:05,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:28:05,899 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:28:05,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:28:05,903 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:28:05,904 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label40.c [2020-10-14 19:28:05,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10704e7ba/e01a24e4a27f42dc819aec4d140a1196/FLAG4ab1fc29a [2020-10-14 19:28:06,750 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:28:06,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label40.c [2020-10-14 19:28:06,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10704e7ba/e01a24e4a27f42dc819aec4d140a1196/FLAG4ab1fc29a [2020-10-14 19:28:07,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10704e7ba/e01a24e4a27f42dc819aec4d140a1196 [2020-10-14 19:28:07,264 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:28:07,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:28:07,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:28:07,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:28:07,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:28:07,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:28:07" (1/1) ... [2020-10-14 19:28:07,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:28:07, skipping insertion in model container [2020-10-14 19:28:07,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:28:07" (1/1) ... [2020-10-14 19:28:07,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:28:07,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:28:09,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:28:09,108 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:28:09,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:28:09,781 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:28:09,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:28:09 WrapperNode [2020-10-14 19:28:09,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:28:09,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:28:09,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:28:09,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:28:09,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:28:09" (1/1) ... [2020-10-14 19:28:09,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:28:09" (1/1) ... [2020-10-14 19:28:09,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:28:09" (1/1) ... [2020-10-14 19:28:09,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:28:09" (1/1) ... [2020-10-14 19:28:09,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:28:09" (1/1) ... [2020-10-14 19:28:09,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:28:09" (1/1) ... [2020-10-14 19:28:09,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:28:09" (1/1) ... [2020-10-14 19:28:10,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:28:10,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:28:10,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:28:10,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:28:10,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:28:09" (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 19:28:10,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:28:10,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:28:10,074 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:28:10,074 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:28:10,074 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:28:10,074 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:28:10,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:28:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:28:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:28:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:28:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:28:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:28:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:28:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:28:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:28:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:28:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:28:14,284 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:28:14,285 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:28:14,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:28:14 BoogieIcfgContainer [2020-10-14 19:28:14,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:28:14,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:28:14,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:28:14,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:28:14,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:28:07" (1/3) ... [2020-10-14 19:28:14,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a468091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:28:14, skipping insertion in model container [2020-10-14 19:28:14,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:28:09" (2/3) ... [2020-10-14 19:28:14,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a468091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:28:14, skipping insertion in model container [2020-10-14 19:28:14,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:28:14" (3/3) ... [2020-10-14 19:28:14,327 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label40.c [2020-10-14 19:28:14,341 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:28:14,355 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:28:14,373 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:28:14,413 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:28:14,413 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:28:14,413 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:28:14,413 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:28:14,413 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:28:14,414 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:28:14,414 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:28:14,414 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:28:14,467 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 19:28:14,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2020-10-14 19:28:14,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:28:14,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:14,542 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:28:14,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:28:14,550 INFO L82 PathProgramCache]: Analyzing trace with hash -428047974, now seen corresponding path program 1 times [2020-10-14 19:28:14,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:28:14,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424722830] [2020-10-14 19:28:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:28:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:15,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:18,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:20,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:20,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 789 [2020-10-14 19:28:20,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:28:20,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 19:28:20,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:20,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:20,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:28:20,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:28:20,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 783 [2020-10-14 19:28:20,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:28:21,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:28:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:21,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:21,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:21,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:28:21,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:21,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:28:21,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:21,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:28:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:28:21,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:22,330 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 19:28:22,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424722830] [2020-10-14 19:28:22,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:28:22,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:28:22,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003636677] [2020-10-14 19:28:22,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:28:22,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:28:22,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:28:22,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:28:22,361 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 19:28:30,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:28:30,354 INFO L93 Difference]: Finished difference Result 2672 states and 5134 transitions. [2020-10-14 19:28:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:28:30,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 775 [2020-10-14 19:28:30,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:28:30,408 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 19:28:30,408 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 19:28:30,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:28:30,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 19:28:30,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1698. [2020-10-14 19:28:30,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1698 states. [2020-10-14 19:28:30,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2780 transitions. [2020-10-14 19:28:30,613 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2780 transitions. Word has length 775 [2020-10-14 19:28:30,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:28:30,616 INFO L479 AbstractCegarLoop]: Abstraction has 1698 states and 2780 transitions. [2020-10-14 19:28:30,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:28:30,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2780 transitions. [2020-10-14 19:28:30,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2020-10-14 19:28:30,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:28:30,642 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:30,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:28:30,643 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:28:30,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:28:30,644 INFO L82 PathProgramCache]: Analyzing trace with hash -962920615, now seen corresponding path program 1 times [2020-10-14 19:28:30,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:28:30,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323998156] [2020-10-14 19:28:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:28:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:30,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:31,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:35,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:35,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 802 [2020-10-14 19:28:35,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:28:35,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-14 19:28:35,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:35,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:28:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:28:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 780 [2020-10-14 19:28:35,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:36,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:28:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:36,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:36,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:36,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:28:36,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:36,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:28:36,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:36,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:28:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:28:36,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:28:36,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:28:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:36,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:36,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:36,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:28:36,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:36,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 19:28:36,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:36,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:36,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:28:36,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:36,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:28:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:28:37,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323998156] [2020-10-14 19:28:37,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:28:37,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:28:37,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770401339] [2020-10-14 19:28:37,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:28:37,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:28:37,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:28:37,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:28:37,498 INFO L87 Difference]: Start difference. First operand 1698 states and 2780 transitions. Second operand 6 states. [2020-10-14 19:28:49,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:28:49,584 INFO L93 Difference]: Finished difference Result 6776 states and 11263 transitions. [2020-10-14 19:28:49,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:28:49,585 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 786 [2020-10-14 19:28:49,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:28:49,611 INFO L225 Difference]: With dead ends: 6776 [2020-10-14 19:28:49,612 INFO L226 Difference]: Without dead ends: 5084 [2020-10-14 19:28:49,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:28:49,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2020-10-14 19:28:49,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 5078. [2020-10-14 19:28:49,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5078 states. [2020-10-14 19:28:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 7451 transitions. [2020-10-14 19:28:49,758 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 7451 transitions. Word has length 786 [2020-10-14 19:28:49,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:28:49,758 INFO L479 AbstractCegarLoop]: Abstraction has 5078 states and 7451 transitions. [2020-10-14 19:28:49,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:28:49,759 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 7451 transitions. [2020-10-14 19:28:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2020-10-14 19:28:49,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:28:49,797 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:49,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:28:49,798 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:28:49,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:28:49,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1051258479, now seen corresponding path program 1 times [2020-10-14 19:28:49,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:28:49,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632031739] [2020-10-14 19:28:49,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:28:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:49,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:49,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:50,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:53,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:54,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:54,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 855 [2020-10-14 19:28:54,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:28:54,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 19:28:54,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:54,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:54,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:28:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:28:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 19:28:54,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:55,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:28:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:55,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:55,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:55,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:28:55,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:55,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:28:55,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:55,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:55,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:28:55,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:55,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:28:55,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:55,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:28:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:55,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:55,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:55,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:55,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:28:55,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:28:55,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:28:55,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:55,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:55,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:28:55,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:28:55,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:28:55,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:55,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 19:28:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:55,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:55,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:55,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:55,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:28:55,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:28:55,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 19:28:55,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:55,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:28:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:28:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 19:28:55,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:55,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 19:28:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:55,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:55,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:55,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:28:55,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:55,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 19:28:55,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:55,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:28:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:28:55,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 19:28:55,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 19:28:55,713 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 53 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-14 19:28:55,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632031739] [2020-10-14 19:28:55,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:28:55,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:28:55,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693545467] [2020-10-14 19:28:55,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:28:55,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:28:55,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:28:55,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:28:55,717 INFO L87 Difference]: Start difference. First operand 5078 states and 7451 transitions. Second operand 8 states. [2020-10-14 19:29:04,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:29:04,936 INFO L93 Difference]: Finished difference Result 15325 states and 22843 transitions. [2020-10-14 19:29:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 19:29:04,938 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 835 [2020-10-14 19:29:04,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:29:04,988 INFO L225 Difference]: With dead ends: 15325 [2020-10-14 19:29:04,989 INFO L226 Difference]: Without dead ends: 10253 [2020-10-14 19:29:05,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:29:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10253 states. [2020-10-14 19:29:05,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10253 to 10238. [2020-10-14 19:29:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10238 states. [2020-10-14 19:29:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10238 states to 10238 states and 13846 transitions. [2020-10-14 19:29:05,244 INFO L78 Accepts]: Start accepts. Automaton has 10238 states and 13846 transitions. Word has length 835 [2020-10-14 19:29:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:29:05,245 INFO L479 AbstractCegarLoop]: Abstraction has 10238 states and 13846 transitions. [2020-10-14 19:29:05,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:29:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 10238 states and 13846 transitions. [2020-10-14 19:29:05,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2020-10-14 19:29:05,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:29:05,284 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:05,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:29:05,284 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:29:05,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:29:05,286 INFO L82 PathProgramCache]: Analyzing trace with hash -2097329814, now seen corresponding path program 1 times [2020-10-14 19:29:05,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:29:05,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016535700] [2020-10-14 19:29:05,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:29:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:05,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:05,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:08,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:10,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:10,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 883 [2020-10-14 19:29:10,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:29:10,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-14 19:29:10,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:10,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:10,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:29:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 19:29:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 855 [2020-10-14 19:29:10,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:10,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:29:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:10,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:10,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:10,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:29:10,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:10,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:29:10,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:10,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:10,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:10,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:29:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:10,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:10,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:10,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:29:10,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:10,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:29:10,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:10,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:29:10,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:10,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:29:10,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:10,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 19:29:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:11,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:11,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:11,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:11,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 19:29:11,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:29:11,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 19:29:11,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:11,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:29:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 19:29:11,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:29:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 82 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 19:29:11,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016535700] [2020-10-14 19:29:11,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:29:11,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:29:11,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193669694] [2020-10-14 19:29:11,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:29:11,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:29:11,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:29:11,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:29:11,709 INFO L87 Difference]: Start difference. First operand 10238 states and 13846 transitions. Second operand 7 states. [2020-10-14 19:29:25,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:29:25,455 INFO L93 Difference]: Finished difference Result 40802 states and 57236 transitions. [2020-10-14 19:29:25,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:29:25,456 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 865 [2020-10-14 19:29:25,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:29:25,581 INFO L225 Difference]: With dead ends: 40802 [2020-10-14 19:29:25,582 INFO L226 Difference]: Without dead ends: 30570 [2020-10-14 19:29:25,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:29:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30570 states. [2020-10-14 19:29:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30570 to 30566. [2020-10-14 19:29:27,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30566 states. [2020-10-14 19:29:27,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30566 states to 30566 states and 41468 transitions. [2020-10-14 19:29:27,351 INFO L78 Accepts]: Start accepts. Automaton has 30566 states and 41468 transitions. Word has length 865 [2020-10-14 19:29:27,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:29:27,352 INFO L479 AbstractCegarLoop]: Abstraction has 30566 states and 41468 transitions. [2020-10-14 19:29:27,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:29:27,352 INFO L276 IsEmpty]: Start isEmpty. Operand 30566 states and 41468 transitions. [2020-10-14 19:29:27,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2020-10-14 19:29:27,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:29:27,441 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:27,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:29:27,446 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:29:27,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:29:27,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1846777048, now seen corresponding path program 1 times [2020-10-14 19:29:27,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:29:27,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804343895] [2020-10-14 19:29:27,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:29:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:27,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:27,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:27,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:28,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:32,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:32,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1006 [2020-10-14 19:29:32,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:29:32,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-14 19:29:32,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:32,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:29:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-14 19:29:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 19:29:32,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:32,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:29:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:32,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:32,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:32,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:29:32,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:32,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:29:32,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:32,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:32,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:32,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:29:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:32,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:32,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:32,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:29:32,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:32,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:29:32,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:32,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:32,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:32,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:32,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:32,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:32,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 19:29:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:32,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:32,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:32,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:29:32,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:32,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:29:32,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:32,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:32,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:32,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:32,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:32,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:32,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 19:29:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:32,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:32,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:32,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 19:29:32,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:32,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 19:29:32,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:32,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:29:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 19:29:32,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:32,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 19:29:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:32,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:33,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:33,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 19:29:33,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:33,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 19:29:33,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:33,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:29:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:29:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 19:29:33,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 19:29:33,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804343895] [2020-10-14 19:29:33,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:29:33,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:29:33,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323031645] [2020-10-14 19:29:33,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:29:33,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:29:33,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:29:33,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:29:33,703 INFO L87 Difference]: Start difference. First operand 30566 states and 41468 transitions. Second operand 8 states. [2020-10-14 19:29:48,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:29:48,842 INFO L93 Difference]: Finished difference Result 76659 states and 108031 transitions. [2020-10-14 19:29:48,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:29:48,843 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 984 [2020-10-14 19:29:48,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:29:49,025 INFO L225 Difference]: With dead ends: 76659 [2020-10-14 19:29:49,026 INFO L226 Difference]: Without dead ends: 46099 [2020-10-14 19:29:49,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:29:49,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46099 states. [2020-10-14 19:29:49,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46099 to 45233. [2020-10-14 19:29:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45233 states. [2020-10-14 19:29:50,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45233 states to 45233 states and 60647 transitions. [2020-10-14 19:29:50,019 INFO L78 Accepts]: Start accepts. Automaton has 45233 states and 60647 transitions. Word has length 984 [2020-10-14 19:29:50,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:29:50,019 INFO L479 AbstractCegarLoop]: Abstraction has 45233 states and 60647 transitions. [2020-10-14 19:29:50,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:29:50,020 INFO L276 IsEmpty]: Start isEmpty. Operand 45233 states and 60647 transitions. [2020-10-14 19:29:50,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2020-10-14 19:29:50,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:29:50,111 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:50,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:29:50,112 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:29:50,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:29:50,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1678710663, now seen corresponding path program 1 times [2020-10-14 19:29:50,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:29:50,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106903796] [2020-10-14 19:29:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:29:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:50,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:50,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:53,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:54,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:55,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:55,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1020 [2020-10-14 19:29:55,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:29:55,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-14 19:29:55,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:55,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:55,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:29:55,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 19:29:55,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 19:29:55,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:55,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:29:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:55,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:55,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:55,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:29:55,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:55,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:29:55,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:55,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:55,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:55,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:55,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:55,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:55,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:29:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:55,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:55,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:55,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:29:55,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:55,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:29:55,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:55,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:29:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 19:29:55,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:55,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:29:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:55,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:55,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:55,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 19:29:55,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:29:55,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 19:29:55,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:55,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:29:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 19:29:55,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:55,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 19:29:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:55,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:55,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:55,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 19:29:55,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:55,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 19:29:55,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:55,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:55,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:29:55,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:29:55,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 19:29:55,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 303 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 19:29:56,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106903796] [2020-10-14 19:29:56,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:29:56,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:29:56,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088713331] [2020-10-14 19:29:56,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:29:56,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:29:56,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:29:56,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:29:56,265 INFO L87 Difference]: Start difference. First operand 45233 states and 60647 transitions. Second operand 7 states. [2020-10-14 19:30:07,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:30:07,270 INFO L93 Difference]: Finished difference Result 121749 states and 165721 transitions. [2020-10-14 19:30:07,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:30:07,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1000 [2020-10-14 19:30:07,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:30:07,547 INFO L225 Difference]: With dead ends: 121749 [2020-10-14 19:30:07,547 INFO L226 Difference]: Without dead ends: 76522 [2020-10-14 19:30:07,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:30:07,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76522 states. [2020-10-14 19:30:10,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76522 to 74754. [2020-10-14 19:30:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74754 states. [2020-10-14 19:30:10,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74754 states to 74754 states and 95471 transitions. [2020-10-14 19:30:10,484 INFO L78 Accepts]: Start accepts. Automaton has 74754 states and 95471 transitions. Word has length 1000 [2020-10-14 19:30:10,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:30:10,485 INFO L479 AbstractCegarLoop]: Abstraction has 74754 states and 95471 transitions. [2020-10-14 19:30:10,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:30:10,485 INFO L276 IsEmpty]: Start isEmpty. Operand 74754 states and 95471 transitions. [2020-10-14 19:30:10,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2020-10-14 19:30:10,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:30:10,599 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:10,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:30:10,600 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:30:10,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:30:10,600 INFO L82 PathProgramCache]: Analyzing trace with hash 542353574, now seen corresponding path program 1 times [2020-10-14 19:30:10,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:30:10,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311127787] [2020-10-14 19:30:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:30:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:10,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:10,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:11,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:15,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:15,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1053 [2020-10-14 19:30:15,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:30:15,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 19:30:15,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:15,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:30:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-14 19:30:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:30:15,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:15,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:30:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:15,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:15,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:30:15,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:15,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:30:15,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:15,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:15,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:15,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:16,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:30:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:16,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:16,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:16,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:30:16,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:16,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:30:16,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:16,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:16,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:16,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:16,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:16,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:16,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:30:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:16,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:16,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:16,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 19:30:16,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:16,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 19:30:16,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:16,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:16,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:16,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:16,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 19:30:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:16,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:16,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:16,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 19:30:16,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:16,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 19:30:16,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:16,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:16,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:30:16,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:16,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 19:30:16,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:16,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-14 19:30:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:16,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:16,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:16,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 19:30:16,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:16,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 19:30:16,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:16,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:16,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:30:16,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:30:16,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 19:30:16,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:30:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 369 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-14 19:30:18,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311127787] [2020-10-14 19:30:18,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:30:18,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:30:18,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767767430] [2020-10-14 19:30:18,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:30:18,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:30:18,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:30:18,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:30:18,165 INFO L87 Difference]: Start difference. First operand 74754 states and 95471 transitions. Second operand 8 states. [2020-10-14 19:30:34,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:30:34,580 INFO L93 Difference]: Finished difference Result 167859 states and 221107 transitions. [2020-10-14 19:30:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:30:34,582 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1031 [2020-10-14 19:30:34,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:30:35,404 INFO L225 Difference]: With dead ends: 167859 [2020-10-14 19:30:35,404 INFO L226 Difference]: Without dead ends: 93945 [2020-10-14 19:30:35,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-14 19:30:35,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93945 states. [2020-10-14 19:30:36,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93945 to 91779. [2020-10-14 19:30:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91779 states. [2020-10-14 19:30:36,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91779 states to 91779 states and 116065 transitions. [2020-10-14 19:30:36,784 INFO L78 Accepts]: Start accepts. Automaton has 91779 states and 116065 transitions. Word has length 1031 [2020-10-14 19:30:36,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:30:36,785 INFO L479 AbstractCegarLoop]: Abstraction has 91779 states and 116065 transitions. [2020-10-14 19:30:36,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:30:36,785 INFO L276 IsEmpty]: Start isEmpty. Operand 91779 states and 116065 transitions. [2020-10-14 19:30:36,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2020-10-14 19:30:36,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:30:36,894 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:36,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:30:36,894 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:30:36,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:30:36,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1179462768, now seen corresponding path program 1 times [2020-10-14 19:30:36,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:30:36,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822468388] [2020-10-14 19:30:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:30:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:36,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:37,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:37,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:41,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:41,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1058 [2020-10-14 19:30:41,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:30:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 19:30:41,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:41,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:30:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-14 19:30:41,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:30:41,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:30:42,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:30:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:42,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:42,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:42,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:30:42,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:42,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:30:42,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:42,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:42,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:42,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:42,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:30:42,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:30:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:42,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:42,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:42,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:30:42,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:42,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:30:42,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:42,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:42,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:42,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:42,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 19:30:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:42,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:42,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:42,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:30:42,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:42,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:30:42,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:42,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:42,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:42,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:42,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:42,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:42,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 19:30:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:42,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:42,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:42,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 19:30:42,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:42,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 19:30:42,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:42,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:30:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 19:30:42,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:42,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 19:30:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:42,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:42,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:42,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 19:30:42,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:42,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 19:30:42,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:42,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:42,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:30:42,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:30:42,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 19:30:42,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 19:30:42,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822468388] [2020-10-14 19:30:42,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:30:42,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:30:42,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032876656] [2020-10-14 19:30:42,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:30:42,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:30:42,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:30:42,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:30:42,907 INFO L87 Difference]: Start difference. First operand 91779 states and 116065 transitions. Second operand 7 states. [2020-10-14 19:30:55,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:30:55,721 INFO L93 Difference]: Finished difference Result 207932 states and 265819 transitions. [2020-10-14 19:30:55,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:30:55,722 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1036 [2020-10-14 19:30:55,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:30:56,311 INFO L225 Difference]: With dead ends: 207932 [2020-10-14 19:30:56,311 INFO L226 Difference]: Without dead ends: 105667 [2020-10-14 19:30:56,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:30:56,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105667 states. [2020-10-14 19:30:57,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105667 to 98907. [2020-10-14 19:30:57,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98907 states. [2020-10-14 19:30:57,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98907 states to 98907 states and 108564 transitions. [2020-10-14 19:30:57,331 INFO L78 Accepts]: Start accepts. Automaton has 98907 states and 108564 transitions. Word has length 1036 [2020-10-14 19:30:57,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:30:57,332 INFO L479 AbstractCegarLoop]: Abstraction has 98907 states and 108564 transitions. [2020-10-14 19:30:57,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:30:57,332 INFO L276 IsEmpty]: Start isEmpty. Operand 98907 states and 108564 transitions. [2020-10-14 19:30:57,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1218 [2020-10-14 19:30:57,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:30:57,379 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:57,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:30:57,380 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:30:57,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:30:57,380 INFO L82 PathProgramCache]: Analyzing trace with hash 658628529, now seen corresponding path program 1 times [2020-10-14 19:30:57,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:30:57,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550274225] [2020-10-14 19:30:57,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:30:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:57,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:57,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:58,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:02,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:02,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1237 [2020-10-14 19:31:02,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:31:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-14 19:31:02,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:02,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:31:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 19:31:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-14 19:31:02,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:02,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:31:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:02,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:02,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:02,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:31:02,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:02,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:31:02,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:02,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:02,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:02,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:02,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:02,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:31:02,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:31:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:02,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:02,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:02,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 19:31:02,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:02,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:31:02,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:02,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:02,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 19:31:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:02,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:02,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:02,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 19:31:02,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:02,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 19:31:02,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:02,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:31:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 19:31:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:02,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 19:31:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:03,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:03,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 19:31:03,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:03,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 19:31:03,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:03,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:31:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:31:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-14 19:31:03,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 679 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-14 19:31:04,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550274225] [2020-10-14 19:31:04,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:31:04,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:31:04,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750504683] [2020-10-14 19:31:04,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:31:04,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:31:04,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:31:04,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:31:04,013 INFO L87 Difference]: Start difference. First operand 98907 states and 108564 transitions. Second operand 7 states. [2020-10-14 19:31:16,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:31:16,143 INFO L93 Difference]: Finished difference Result 281863 states and 315410 transitions. [2020-10-14 19:31:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:31:16,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1217 [2020-10-14 19:31:16,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:31:16,608 INFO L225 Difference]: With dead ends: 281863 [2020-10-14 19:31:16,608 INFO L226 Difference]: Without dead ends: 183796 [2020-10-14 19:31:19,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:31:19,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183796 states. [2020-10-14 19:31:20,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183796 to 177860. [2020-10-14 19:31:20,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177860 states. [2020-10-14 19:31:20,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177860 states to 177860 states and 198193 transitions. [2020-10-14 19:31:20,991 INFO L78 Accepts]: Start accepts. Automaton has 177860 states and 198193 transitions. Word has length 1217 [2020-10-14 19:31:20,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:31:20,992 INFO L479 AbstractCegarLoop]: Abstraction has 177860 states and 198193 transitions. [2020-10-14 19:31:20,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:31:20,992 INFO L276 IsEmpty]: Start isEmpty. Operand 177860 states and 198193 transitions. [2020-10-14 19:31:21,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1261 [2020-10-14 19:31:21,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:31:21,146 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:21,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:31:21,146 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:31:21,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:31:21,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1884931457, now seen corresponding path program 1 times [2020-10-14 19:31:21,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:31:21,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156563069] [2020-10-14 19:31:21,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:31:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:21,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:21,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:26,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:26,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1282 [2020-10-14 19:31:26,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:31:26,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-14 19:31:26,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:26,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:31:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 19:31:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 336 [2020-10-14 19:31:26,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:26,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:31:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:26,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:26,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:26,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:31:26,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:26,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:31:26,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:26,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:26,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:26,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:31:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:26,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:26,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:26,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:31:26,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:26,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:31:26,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:26,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:31:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 19:31:26,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:26,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:31:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:26,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:29,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:29,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 19:31:29,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:29,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2803 [2020-10-14 19:31:29,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:29,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:31:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:31:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 337 [2020-10-14 19:31:29,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:29,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:31:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:29,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:29,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:29,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 19:31:29,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:29,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 19:31:29,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:29,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:29,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:31:29,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:31:29,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 19:31:29,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:30,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-14 19:31:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:30,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:30,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:30,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 19:31:30,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:30,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 19:31:30,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:30,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-14 19:31:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:30,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 493 proven. 131 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 19:31:31,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156563069] [2020-10-14 19:31:31,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:31:31,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:31:31,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623446556] [2020-10-14 19:31:31,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:31:31,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:31:31,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:31:31,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:31:31,436 INFO L87 Difference]: Start difference. First operand 177860 states and 198193 transitions. Second operand 8 states. [2020-10-14 19:31:39,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:31:39,562 INFO L93 Difference]: Finished difference Result 356026 states and 397949 transitions. [2020-10-14 19:31:39,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:31:39,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1260 [2020-10-14 19:31:39,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:31:39,946 INFO L225 Difference]: With dead ends: 356026 [2020-10-14 19:31:39,946 INFO L226 Difference]: Without dead ends: 179006 [2020-10-14 19:31:40,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-14 19:31:40,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179006 states.