/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:36:05,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:36:05,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:36:05,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:36:05,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:36:05,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:36:05,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:36:05,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:36:05,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:36:05,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:36:05,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:36:05,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:36:05,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:36:05,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:36:05,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:36:05,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:36:05,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:36:05,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:36:05,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:36:05,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:36:05,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:36:05,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:36:05,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:36:05,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:36:05,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:36:05,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:36:05,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:36:05,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:36:05,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:36:05,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:36:05,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:36:05,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:36:05,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:36:05,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:36:05,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:36:05,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:36:05,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:36:05,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:36:05,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:36:05,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:36:05,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:36:05,590 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 [2020-10-27 00:36:05,646 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:36:05,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:36:05,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:36:05,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:36:05,653 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:36:05,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:36:05,654 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:36:05,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:36:05,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:36:05,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:36:05,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:36:05,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:36:05,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:36:05,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:36:05,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:36:05,657 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:36:05,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:36:05,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:36:05,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:36:05,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:36:05,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:36:05,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:36:05,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:36:05,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:36:05,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:36:05,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:36:05,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:36:05,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:36:05,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:36:05,660 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:36:06,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:36:06,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:36:06,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:36:06,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:36:06,194 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:36:06,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label56.c [2020-10-27 00:36:06,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24c67600f/ec16c266562a48e5a4de4d10e1ea8e0e/FLAGbbae82eda [2020-10-27 00:36:07,252 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:36:07,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label56.c [2020-10-27 00:36:07,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24c67600f/ec16c266562a48e5a4de4d10e1ea8e0e/FLAGbbae82eda [2020-10-27 00:36:07,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24c67600f/ec16c266562a48e5a4de4d10e1ea8e0e [2020-10-27 00:36:07,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:36:07,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:36:07,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:36:07,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:36:07,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:36:07,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:36:07" (1/1) ... [2020-10-27 00:36:07,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d288e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:07, skipping insertion in model container [2020-10-27 00:36:07,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:36:07" (1/1) ... [2020-10-27 00:36:07,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:36:07,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:36:09,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:36:09,040 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:36:09,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:36:09,624 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:36:09,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:09 WrapperNode [2020-10-27 00:36:09,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:36:09,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:36:09,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:36:09,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:36:09,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:09" (1/1) ... [2020-10-27 00:36:09,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:09" (1/1) ... [2020-10-27 00:36:09,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:09" (1/1) ... [2020-10-27 00:36:09,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:09" (1/1) ... [2020-10-27 00:36:09,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:09" (1/1) ... [2020-10-27 00:36:09,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:09" (1/1) ... [2020-10-27 00:36:09,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:09" (1/1) ... [2020-10-27 00:36:09,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:36:09,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:36:09,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:36:09,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:36:09,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:09" (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 [2020-10-27 00:36:10,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:36:10,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:36:10,052 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:36:10,052 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:36:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:36:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:36:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:36:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:36:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:36:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:36:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:36:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:36:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:36:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:36:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:36:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:36:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:36:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:36:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:36:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:36:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:36:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:36:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:36:14,038 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:36:14,043 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:36:14,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:36:14 BoogieIcfgContainer [2020-10-27 00:36:14,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:36:14,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:36:14,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:36:14,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:36:14,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:36:07" (1/3) ... [2020-10-27 00:36:14,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca2b55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:36:14, skipping insertion in model container [2020-10-27 00:36:14,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:09" (2/3) ... [2020-10-27 00:36:14,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca2b55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:36:14, skipping insertion in model container [2020-10-27 00:36:14,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:36:14" (3/3) ... [2020-10-27 00:36:14,060 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label56.c [2020-10-27 00:36:14,076 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:36:14,082 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:36:14,095 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:36:14,129 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:36:14,129 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:36:14,129 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:36:14,130 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:36:14,130 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:36:14,130 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:36:14,130 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:36:14,130 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:36:14,166 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:36:14,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 00:36:14,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:14,185 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] [2020-10-27 00:36:14,185 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:14,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:14,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1502869208, now seen corresponding path program 1 times [2020-10-27 00:36:14,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:14,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680519323] [2020-10-27 00:36:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:14,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:15,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:15,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 00:36:15,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:15,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-27 00:36:15,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:15,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:15,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:15,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 00:36:15,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:36:15,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:15,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:15,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:15,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:15,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:15,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:36:15,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:15,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:36:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:36:15,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680519323] [2020-10-27 00:36:15,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:36:15,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:36:15,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455255449] [2020-10-27 00:36:15,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:36:15,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:15,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:36:15,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:36:15,333 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:36:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:30,933 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-27 00:36:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:36:30,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-27 00:36:30,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:30,974 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:36:30,974 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:36:30,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:36:31,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:36:31,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 00:36:31,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 00:36:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-27 00:36:31,203 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 55 [2020-10-27 00:36:31,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:31,205 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-27 00:36:31,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:36:31,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-27 00:36:31,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 00:36:31,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:31,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:36:31,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:36:31,227 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:31,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:31,228 INFO L82 PathProgramCache]: Analyzing trace with hash 277278229, now seen corresponding path program 1 times [2020-10-27 00:36:31,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:31,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244844535] [2020-10-27 00:36:31,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:31,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:31,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:32,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:33,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:33,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 00:36:33,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:36:33,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1786 [2020-10-27 00:36:33,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 00:36:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:36:33,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:33,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:33,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:33,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:33,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:33,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:36:33,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:33,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:33,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:36:33,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:33,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:33,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:33,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:36:33,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:33,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 00:36:33,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 00:36:33,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:33,592 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:36:33,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244844535] [2020-10-27 00:36:33,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:36:33,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:36:33,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409351] [2020-10-27 00:36:33,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:36:33,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:33,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:36:33,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:36:33,598 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 7 states. [2020-10-27 00:36:46,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:46,661 INFO L93 Difference]: Finished difference Result 6511 states and 10972 transitions. [2020-10-27 00:36:46,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:36:46,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-10-27 00:36:46,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:46,697 INFO L225 Difference]: With dead ends: 6511 [2020-10-27 00:36:46,698 INFO L226 Difference]: Without dead ends: 4381 [2020-10-27 00:36:46,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:36:46,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2020-10-27 00:36:46,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 4316. [2020-10-27 00:36:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4316 states. [2020-10-27 00:36:46,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4316 states to 4316 states and 6157 transitions. [2020-10-27 00:36:46,886 INFO L78 Accepts]: Start accepts. Automaton has 4316 states and 6157 transitions. Word has length 143 [2020-10-27 00:36:46,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:46,887 INFO L481 AbstractCegarLoop]: Abstraction has 4316 states and 6157 transitions. [2020-10-27 00:36:46,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:36:46,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4316 states and 6157 transitions. [2020-10-27 00:36:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 00:36:46,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:46,893 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:36:46,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:36:46,894 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:46,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:46,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1898681062, now seen corresponding path program 1 times [2020-10-27 00:36:46,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:46,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543325208] [2020-10-27 00:36:46,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:46,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:47,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:47,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:48,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:51,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:51,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-27 00:36:51,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:36:51,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4075 [2020-10-27 00:36:51,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:51,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:36:51,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:51,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:51,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:51,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:51,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:51,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:51,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:36:51,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:51,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:51,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:51,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:51,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:51,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:51,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:51,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:36:51,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:51,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:36:51,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:36:51,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:51,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 00:36:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:51,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:51,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:51,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:36:51,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:51,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:36:51,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:36:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:51,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 94 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:36:51,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543325208] [2020-10-27 00:36:51,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:36:51,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:36:51,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360819418] [2020-10-27 00:36:51,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:36:51,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:51,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:36:51,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:36:51,464 INFO L87 Difference]: Start difference. First operand 4316 states and 6157 transitions. Second operand 7 states. [2020-10-27 00:37:04,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:37:04,465 INFO L93 Difference]: Finished difference Result 10260 states and 14915 transitions. [2020-10-27 00:37:04,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:37:04,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-27 00:37:04,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:37:04,509 INFO L225 Difference]: With dead ends: 10260 [2020-10-27 00:37:04,510 INFO L226 Difference]: Without dead ends: 5950 [2020-10-27 00:37:04,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:37:04,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5950 states. [2020-10-27 00:37:04,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5950 to 5822. [2020-10-27 00:37:04,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5822 states. [2020-10-27 00:37:04,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5822 states to 5822 states and 8020 transitions. [2020-10-27 00:37:04,728 INFO L78 Accepts]: Start accepts. Automaton has 5822 states and 8020 transitions. Word has length 214 [2020-10-27 00:37:04,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:37:04,729 INFO L481 AbstractCegarLoop]: Abstraction has 5822 states and 8020 transitions. [2020-10-27 00:37:04,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:37:04,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5822 states and 8020 transitions. [2020-10-27 00:37:04,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-27 00:37:04,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:37:04,735 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:37:04,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:37:04,736 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:37:04,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:37:04,737 INFO L82 PathProgramCache]: Analyzing trace with hash 385426966, now seen corresponding path program 1 times [2020-10-27 00:37:04,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:37:04,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140810633] [2020-10-27 00:37:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:37:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:04,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:04,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:05,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:07,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:09,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:09,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-27 00:37:09,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:37:09,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 00:37:09,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:09,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:37:09,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:37:09,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:37:09,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:09,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:37:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:09,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:09,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:09,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:37:09,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:37:09,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:37:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:09,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:37:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:10,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:10,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:10,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:37:10,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 00:37:10,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:37:10,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:10,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 00:37:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:10,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:10,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:37:10,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:10,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:37:10,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:37:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 94 proven. 83 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:37:10,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140810633] [2020-10-27 00:37:10,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:37:10,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:37:10,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604997867] [2020-10-27 00:37:10,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:37:10,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:37:10,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:37:10,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:37:10,807 INFO L87 Difference]: Start difference. First operand 5822 states and 8020 transitions. Second operand 7 states. [2020-10-27 00:37:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:37:22,673 INFO L93 Difference]: Finished difference Result 12482 states and 17089 transitions. [2020-10-27 00:37:22,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:37:22,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-27 00:37:22,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:37:22,706 INFO L225 Difference]: With dead ends: 12482 [2020-10-27 00:37:22,707 INFO L226 Difference]: Without dead ends: 6666 [2020-10-27 00:37:22,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:37:22,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6666 states. [2020-10-27 00:37:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6666 to 6558. [2020-10-27 00:37:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6558 states. [2020-10-27 00:37:22,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6558 states to 6558 states and 8810 transitions. [2020-10-27 00:37:22,894 INFO L78 Accepts]: Start accepts. Automaton has 6558 states and 8810 transitions. Word has length 265 [2020-10-27 00:37:22,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:37:22,895 INFO L481 AbstractCegarLoop]: Abstraction has 6558 states and 8810 transitions. [2020-10-27 00:37:22,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:37:22,896 INFO L276 IsEmpty]: Start isEmpty. Operand 6558 states and 8810 transitions. [2020-10-27 00:37:22,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-10-27 00:37:22,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:37:22,905 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:37:22,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:37:22,906 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:37:22,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:37:22,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1081371001, now seen corresponding path program 1 times [2020-10-27 00:37:22,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:37:22,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974301577] [2020-10-27 00:37:22,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:37:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:23,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:23,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:24,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:27,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:27,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:28,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:28,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-10-27 00:37:28,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 00:37:28,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 00:37:28,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:37:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:37:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-27 00:37:28,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 00:37:28,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:37:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:28,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:28,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:28,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:37:28,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:37:28,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:28,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:28,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:37:28,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:28,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:37:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:28,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:28,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:37:28,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:28,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-27 00:37:28,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 00:37:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:37:28,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:37:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:28,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:28,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:28,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:37:28,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:28,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 00:37:28,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:28,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:28,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:28,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:37:28,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:28,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-27 00:37:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:28,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:28,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:28,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:37:28,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:28,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:37:28,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:37:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:28,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:29,337 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 210 proven. 151 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-27 00:37:29,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974301577] [2020-10-27 00:37:29,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:37:29,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:37:29,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628671724] [2020-10-27 00:37:29,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:37:29,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:37:29,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:37:29,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:37:29,341 INFO L87 Difference]: Start difference. First operand 6558 states and 8810 transitions. Second operand 8 states. [2020-10-27 00:37:42,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:37:42,799 INFO L93 Difference]: Finished difference Result 18560 states and 26017 transitions. [2020-10-27 00:37:42,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:37:42,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 400 [2020-10-27 00:37:42,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:37:42,859 INFO L225 Difference]: With dead ends: 18560 [2020-10-27 00:37:42,859 INFO L226 Difference]: Without dead ends: 12710 [2020-10-27 00:37:42,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-27 00:37:42,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12710 states. [2020-10-27 00:37:43,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12710 to 11783. [2020-10-27 00:37:43,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11783 states. [2020-10-27 00:37:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11783 states to 11783 states and 15080 transitions. [2020-10-27 00:37:43,186 INFO L78 Accepts]: Start accepts. Automaton has 11783 states and 15080 transitions. Word has length 400 [2020-10-27 00:37:43,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:37:43,187 INFO L481 AbstractCegarLoop]: Abstraction has 11783 states and 15080 transitions. [2020-10-27 00:37:43,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:37:43,187 INFO L276 IsEmpty]: Start isEmpty. Operand 11783 states and 15080 transitions. [2020-10-27 00:37:43,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-10-27 00:37:43,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:37:43,202 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:37:43,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:37:43,202 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:37:43,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:37:43,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1304769967, now seen corresponding path program 1 times [2020-10-27 00:37:43,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:37:43,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324002671] [2020-10-27 00:37:43,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:37:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:43,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:43,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:44,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:44,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:45,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:48,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:48,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 511 [2020-10-27 00:37:48,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:37:48,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 00:37:48,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:48,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:48,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:37:48,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:37:48,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:48,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:37:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:48,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:48,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:48,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:37:48,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:48,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:37:48,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:48,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:48,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:48,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:37:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:48,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:48,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:48,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:37:48,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:48,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 00:37:48,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:48,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:37:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:48,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:37:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:48,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:48,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:49,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:49,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:37:49,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:37:49,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-27 00:37:49,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:49,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:37:49,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:37:49,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:37:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:49,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:49,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:49,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 00:37:49,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:49,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 00:37:49,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:49,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:49,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-27 00:37:49,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:49,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 264 proven. 121 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-27 00:37:49,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324002671] [2020-10-27 00:37:49,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:37:49,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:37:49,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964039935] [2020-10-27 00:37:49,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:37:49,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:37:49,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:37:49,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:37:49,771 INFO L87 Difference]: Start difference. First operand 11783 states and 15080 transitions. Second operand 7 states. [2020-10-27 00:38:01,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:38:01,174 INFO L93 Difference]: Finished difference Result 23388 states and 30354 transitions. [2020-10-27 00:38:01,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:38:01,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 495 [2020-10-27 00:38:01,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:38:01,220 INFO L225 Difference]: With dead ends: 23388 [2020-10-27 00:38:01,221 INFO L226 Difference]: Without dead ends: 12000 [2020-10-27 00:38:01,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:38:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12000 states. [2020-10-27 00:38:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12000 to 11752. [2020-10-27 00:38:01,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11752 states. [2020-10-27 00:38:01,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11752 states to 11752 states and 13662 transitions. [2020-10-27 00:38:01,530 INFO L78 Accepts]: Start accepts. Automaton has 11752 states and 13662 transitions. Word has length 495 [2020-10-27 00:38:01,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:38:01,531 INFO L481 AbstractCegarLoop]: Abstraction has 11752 states and 13662 transitions. [2020-10-27 00:38:01,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:38:01,531 INFO L276 IsEmpty]: Start isEmpty. Operand 11752 states and 13662 transitions. [2020-10-27 00:38:01,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-10-27 00:38:01,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:38:01,550 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:38:01,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:38:01,551 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:38:01,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:38:01,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1543329339, now seen corresponding path program 1 times [2020-10-27 00:38:01,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:38:01,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193703378] [2020-10-27 00:38:01,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:38:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:01,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:01,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:02,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:06,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:06,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 590 [2020-10-27 00:38:06,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:38:06,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 00:38:06,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:38:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:38:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:38:06,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:06,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:38:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:06,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:06,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:06,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:38:06,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:06,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:38:06,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:06,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:06,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:06,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:38:06,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:06,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:38:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:06,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:07,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:07,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:38:07,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:07,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-27 00:38:07,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:38:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:38:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:38:07,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:07,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:07,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:07,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:07,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:38:07,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:07,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:38:07,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:07,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:38:07,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:38:07,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:38:07,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:07,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:38:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:07,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:07,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:38:07,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:07,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:38:07,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:07,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:07,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 00:38:07,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:07,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:07,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-27 00:38:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:07,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:07,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:07,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:38:07,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:07,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:38:07,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:07,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:07,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:38:07,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:07,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:08,234 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 141 proven. 200 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-27 00:38:08,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193703378] [2020-10-27 00:38:08,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:38:08,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:38:08,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083157770] [2020-10-27 00:38:08,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:38:08,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:38:08,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:38:08,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:38:08,237 INFO L87 Difference]: Start difference. First operand 11752 states and 13662 transitions. Second operand 8 states. [2020-10-27 00:38:21,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:38:21,798 INFO L93 Difference]: Finished difference Result 33145 states and 39831 transitions. [2020-10-27 00:38:21,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:38:21,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 572 [2020-10-27 00:38:21,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:38:21,863 INFO L225 Difference]: With dead ends: 33145 [2020-10-27 00:38:21,864 INFO L226 Difference]: Without dead ends: 22101 [2020-10-27 00:38:21,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:38:21,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22101 states. [2020-10-27 00:38:22,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22101 to 21321. [2020-10-27 00:38:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21321 states. [2020-10-27 00:38:22,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21321 states to 21321 states and 25023 transitions. [2020-10-27 00:38:22,369 INFO L78 Accepts]: Start accepts. Automaton has 21321 states and 25023 transitions. Word has length 572 [2020-10-27 00:38:22,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:38:22,370 INFO L481 AbstractCegarLoop]: Abstraction has 21321 states and 25023 transitions. [2020-10-27 00:38:22,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:38:22,370 INFO L276 IsEmpty]: Start isEmpty. Operand 21321 states and 25023 transitions. [2020-10-27 00:38:22,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1100 [2020-10-27 00:38:22,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:38:22,391 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:38:22,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:38:22,391 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:38:22,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:38:22,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1766475004, now seen corresponding path program 1 times [2020-10-27 00:38:22,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:38:22,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101009574] [2020-10-27 00:38:22,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:38:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:22,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:23,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:25,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:27,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:27,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:27,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1123 [2020-10-27 00:38:27,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:38:27,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-27 00:38:27,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:38:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:38:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:27,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:38:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:27,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:27,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:27,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:38:27,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:27,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:38:27,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:27,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:27,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:27,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:27,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:27,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:38:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:27,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:28,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:28,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:38:28,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 00:38:28,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:28,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:28,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:28,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:28,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:38:28,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:28,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:38:28,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:28,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:28,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:38:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:28,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:28,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:28,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:38:28,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:28,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:38:28,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:28,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:28,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:28,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:28,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:38:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:28,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:28,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:28,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:38:28,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:28,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 00:38:28,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:28,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:28,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:28,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:38:28,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:28,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:28,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:28,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:28,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:38:28,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:28,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:38:28,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:28,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:28,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:38:28,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:28,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:38:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:28,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:29,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:29,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:38:29,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:29,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 00:38:29,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:38:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:38:29,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:29,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:38:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:29,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:29,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:38:29,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:29,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:38:29,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:38:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:29,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 442 proven. 87 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2020-10-27 00:38:29,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101009574] [2020-10-27 00:38:29,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:38:29,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:38:29,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085549879] [2020-10-27 00:38:29,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:38:29,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:38:30,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:38:30,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:38:30,000 INFO L87 Difference]: Start difference. First operand 21321 states and 25023 transitions. Second operand 7 states. [2020-10-27 00:38:44,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:38:44,093 INFO L93 Difference]: Finished difference Result 44218 states and 52178 transitions. [2020-10-27 00:38:44,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:38:44,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1099 [2020-10-27 00:38:44,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:38:44,166 INFO L225 Difference]: With dead ends: 44218 [2020-10-27 00:38:44,166 INFO L226 Difference]: Without dead ends: 24315 [2020-10-27 00:38:44,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:38:44,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24315 states. [2020-10-27 00:38:44,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24315 to 24208. [2020-10-27 00:38:44,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24208 states. [2020-10-27 00:38:44,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24208 states to 24208 states and 28144 transitions. [2020-10-27 00:38:44,811 INFO L78 Accepts]: Start accepts. Automaton has 24208 states and 28144 transitions. Word has length 1099 [2020-10-27 00:38:44,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:38:44,814 INFO L481 AbstractCegarLoop]: Abstraction has 24208 states and 28144 transitions. [2020-10-27 00:38:44,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:38:44,814 INFO L276 IsEmpty]: Start isEmpty. Operand 24208 states and 28144 transitions. [2020-10-27 00:38:44,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1107 [2020-10-27 00:38:44,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:38:44,832 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:38:44,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:38:44,833 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:38:44,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:38:44,834 INFO L82 PathProgramCache]: Analyzing trace with hash 202329479, now seen corresponding path program 1 times [2020-10-27 00:38:44,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:38:44,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373289322] [2020-10-27 00:38:44,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:38:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:45,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:45,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:47,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:48,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:50,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:50,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1130 [2020-10-27 00:38:50,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:38:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-27 00:38:50,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-27 00:38:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:38:50,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:50,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:38:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:50,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:50,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:50,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:38:50,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:50,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:38:50,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:50,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:50,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:50,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:50,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:50,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:38:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:50,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:50,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:38:50,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:50,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 00:38:50,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:50,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:50,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:50,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:50,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:50,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:50,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:38:50,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:50,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:38:50,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:50,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:50,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:38:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:50,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:50,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:50,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:38:50,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:50,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:38:50,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:50,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:50,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:50,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:50,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:50,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:38:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:50,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:51,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:51,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 00:38:51,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 00:38:51,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-27 00:38:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:51,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:51,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:51,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:51,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 00:38:51,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:51,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 00:38:51,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 00:38:51,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:51,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-27 00:38:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:51,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:51,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:51,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:38:51,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:51,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 00:38:51,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:38:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:38:51,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:51,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-27 00:38:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:51,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:51,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:51,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:38:51,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:51,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:38:51,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:38:51,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:51,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 442 proven. 87 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2020-10-27 00:38:52,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373289322] [2020-10-27 00:38:52,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:38:52,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:38:52,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314757159] [2020-10-27 00:38:52,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:38:52,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:38:52,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:38:52,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:38:52,192 INFO L87 Difference]: Start difference. First operand 24208 states and 28144 transitions. Second operand 7 states. [2020-10-27 00:39:09,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:39:09,483 INFO L93 Difference]: Finished difference Result 57193 states and 68881 transitions. [2020-10-27 00:39:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:39:09,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1106 [2020-10-27 00:39:09,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:39:09,599 INFO L225 Difference]: With dead ends: 57193 [2020-10-27 00:39:09,599 INFO L226 Difference]: Without dead ends: 34403 [2020-10-27 00:39:09,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:39:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34403 states. [2020-10-27 00:39:10,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34403 to 34320. [2020-10-27 00:39:10,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34320 states. [2020-10-27 00:39:10,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34320 states to 34320 states and 39632 transitions. [2020-10-27 00:39:10,537 INFO L78 Accepts]: Start accepts. Automaton has 34320 states and 39632 transitions. Word has length 1106 [2020-10-27 00:39:10,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:39:10,540 INFO L481 AbstractCegarLoop]: Abstraction has 34320 states and 39632 transitions. [2020-10-27 00:39:10,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:39:10,540 INFO L276 IsEmpty]: Start isEmpty. Operand 34320 states and 39632 transitions. [2020-10-27 00:39:10,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1193 [2020-10-27 00:39:10,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:39:10,569 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:39:10,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:39:10,570 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:39:10,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:39:10,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1215301175, now seen corresponding path program 1 times [2020-10-27 00:39:10,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:39:10,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733541861] [2020-10-27 00:39:10,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:39:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:10,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:11,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:13,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:15,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:15,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:15,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1218 [2020-10-27 00:39:15,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:39:15,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 00:39:15,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:15,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:39:15,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:39:15,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:39:15,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:16,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:39:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:16,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:16,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:16,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:39:16,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:16,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:39:16,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:16,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:39:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:16,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:16,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:39:16,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:16,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 00:39:16,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:16,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:16,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:16,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:16,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:16,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:39:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:16,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:16,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:16,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:39:16,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:16,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:39:16,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:16,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:16,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:39:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:16,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:16,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:16,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:39:16,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:39:16,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:16,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:39:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:16,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:16,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:16,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:39:16,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:16,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-27 00:39:16,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:16,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:39:16,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:16,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:39:16,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:16,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:39:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:16,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:16,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:16,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:39:16,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:16,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:39:16,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:39:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:39:16,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:16,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:39:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:16,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:16,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:16,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:39:16,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:16,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 00:39:16,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:39:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:39:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:39:16,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:17,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-27 00:39:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:17,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:17,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:17,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 00:39:17,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:17,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:39:17,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:17,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:17,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-27 00:39:17,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:17,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:17,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1057 [2020-10-27 00:39:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:17,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:17,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:17,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:39:17,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:17,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:39:17,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:39:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:17,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 433 proven. 174 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2020-10-27 00:39:17,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733541861] [2020-10-27 00:39:17,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:39:17,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:39:17,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139966713] [2020-10-27 00:39:17,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:39:17,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:39:17,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:39:17,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:39:17,740 INFO L87 Difference]: Start difference. First operand 34320 states and 39632 transitions. Second operand 7 states. [2020-10-27 00:39:35,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:39:35,384 INFO L93 Difference]: Finished difference Result 75797 states and 89793 transitions. [2020-10-27 00:39:35,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:39:35,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1192 [2020-10-27 00:39:35,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:39:35,500 INFO L225 Difference]: With dead ends: 75797 [2020-10-27 00:39:35,500 INFO L226 Difference]: Without dead ends: 42895 [2020-10-27 00:39:35,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:39:35,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42895 states. [2020-10-27 00:39:36,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42895 to 42805. [2020-10-27 00:39:36,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42805 states. [2020-10-27 00:39:36,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42805 states to 42805 states and 49737 transitions. [2020-10-27 00:39:36,383 INFO L78 Accepts]: Start accepts. Automaton has 42805 states and 49737 transitions. Word has length 1192 [2020-10-27 00:39:36,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:39:36,385 INFO L481 AbstractCegarLoop]: Abstraction has 42805 states and 49737 transitions. [2020-10-27 00:39:36,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:39:36,385 INFO L276 IsEmpty]: Start isEmpty. Operand 42805 states and 49737 transitions. [2020-10-27 00:39:36,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1314 [2020-10-27 00:39:36,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:39:36,421 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:39:36,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:39:36,422 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:39:36,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:39:36,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1327463397, now seen corresponding path program 1 times [2020-10-27 00:39:36,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:39:36,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558084977] [2020-10-27 00:39:36,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:39:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:36,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:37,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:40,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:41,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:41,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1339 [2020-10-27 00:39:41,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:39:41,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 00:39:41,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:41,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:39:41,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:39:41,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:39:41,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:41,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:39:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:41,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:41,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:41,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:39:41,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:41,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:39:41,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:41,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:41,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:39:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:41,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:42,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:42,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:39:42,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:42,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 00:39:42,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:42,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:42,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:42,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:42,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:42,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:39:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:42,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:42,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:42,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:39:42,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:42,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:39:42,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:42,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:42,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:39:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:42,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:42,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:42,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:39:42,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:42,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:39:42,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:42,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:42,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:39:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:42,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:42,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:42,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:39:42,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:42,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:39:42,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:42,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:42,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:42,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:42,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:42,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:39:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:42,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:42,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:42,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:39:42,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:42,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:39:42,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:42,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:42,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:39:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:42,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:42,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:42,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:39:42,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:42,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:39:42,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:42,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:39:42,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:42,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:39:42,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:42,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:39:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:42,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:42,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:42,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:39:42,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:42,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 00:39:42,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:39:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:39:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:39:42,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:42,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2020-10-27 00:39:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:43,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:43,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:43,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 00:39:43,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:43,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:39:43,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:43,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:43,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-27 00:39:43,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:43,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1777 backedges. 614 proven. 121 refuted. 0 times theorem prover too weak. 1042 trivial. 0 not checked. [2020-10-27 00:39:43,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558084977] [2020-10-27 00:39:43,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:39:43,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:39:43,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885939230] [2020-10-27 00:39:43,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:39:43,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:39:43,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:39:43,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:39:43,939 INFO L87 Difference]: Start difference. First operand 42805 states and 49737 transitions. Second operand 7 states.