/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/Problem04_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:06:23,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:06:23,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:06:23,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:06:23,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:06:23,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:06:23,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:06:23,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:06:23,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:06:23,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:06:23,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:06:23,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:06:23,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:06:23,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:06:23,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:06:23,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:06:23,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:06:23,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:06:23,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:06:23,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:06:23,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:06:23,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:06:23,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:06:23,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:06:23,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:06:23,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:06:23,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:06:23,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:06:23,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:06:23,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:06:23,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:06:23,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:06:23,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:06:23,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:06:23,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:06:23,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:06:23,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:06:23,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:06:23,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:06:23,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:06:23,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:06:23,202 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 [2020-10-26 21:06:23,261 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:06:23,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:06:23,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:06:23,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:06:23,268 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:06:23,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:06:23,270 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:06:23,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:06:23,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:06:23,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:06:23,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:06:23,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:06:23,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:06:23,273 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:06:23,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:06:23,273 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:06:23,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:06:23,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:06:23,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:06:23,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:06:23,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:06:23,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:06:23,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:06:23,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:06:23,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:06:23,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:06:23,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:06:23,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:06:23,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:06:23,277 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:06:23,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:06:23,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:06:23,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:06:23,772 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:06:23,773 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:06:23,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label47.c [2020-10-26 21:06:23,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57e5aa58b/7d9ff67b304b49a8822eefc374169d14/FLAGdce4f9a6d [2020-10-26 21:06:24,946 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:06:24,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label47.c [2020-10-26 21:06:24,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57e5aa58b/7d9ff67b304b49a8822eefc374169d14/FLAGdce4f9a6d [2020-10-26 21:06:25,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57e5aa58b/7d9ff67b304b49a8822eefc374169d14 [2020-10-26 21:06:25,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:06:25,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:06:25,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:06:25,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:06:25,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:06:25,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:06:25" (1/1) ... [2020-10-26 21:06:25,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd763fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:25, skipping insertion in model container [2020-10-26 21:06:25,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:06:25" (1/1) ... [2020-10-26 21:06:25,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:06:25,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:06:27,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:06:27,229 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:06:27,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:06:27,980 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:06:27,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:27 WrapperNode [2020-10-26 21:06:27,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:06:27,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:06:27,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:06:27,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:06:27,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:27" (1/1) ... [2020-10-26 21:06:27,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:27" (1/1) ... [2020-10-26 21:06:28,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:27" (1/1) ... [2020-10-26 21:06:28,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:27" (1/1) ... [2020-10-26 21:06:28,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:27" (1/1) ... [2020-10-26 21:06:28,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:27" (1/1) ... [2020-10-26 21:06:28,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:27" (1/1) ... [2020-10-26 21:06:28,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:06:28,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:06:28,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:06:28,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:06:28,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:27" (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 [2020-10-26 21:06:28,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:06:28,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:06:28,346 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:06:28,346 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:06:28,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:06:28,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:06:28,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:06:28,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:06:28,347 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:06:28,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:06:28,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:06:28,349 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:06:28,349 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:06:28,349 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:06:28,349 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:06:28,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:06:28,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:06:28,350 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:06:28,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:06:28,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:06:28,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:06:28,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:06:28,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:06:28,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:06:28,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:06:33,524 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:06:33,524 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:06:33,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:06:33 BoogieIcfgContainer [2020-10-26 21:06:33,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:06:33,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:06:33,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:06:33,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:06:33,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:06:25" (1/3) ... [2020-10-26 21:06:33,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9e76af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:06:33, skipping insertion in model container [2020-10-26 21:06:33,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:27" (2/3) ... [2020-10-26 21:06:33,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9e76af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:06:33, skipping insertion in model container [2020-10-26 21:06:33,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:06:33" (3/3) ... [2020-10-26 21:06:33,537 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label47.c [2020-10-26 21:06:33,549 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:06:33,555 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:06:33,568 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:06:33,602 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:06:33,602 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:06:33,602 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:06:33,603 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:06:33,603 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:06:33,603 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:06:33,603 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:06:33,603 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:06:33,639 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-26 21:06:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2020-10-26 21:06:33,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:06:33,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:06:33,699 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:06:33,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:06:33,706 INFO L82 PathProgramCache]: Analyzing trace with hash 556137672, now seen corresponding path program 1 times [2020-10-26 21:06:33,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:06:33,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725162532] [2020-10-26 21:06:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:06:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:34,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:39,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:39,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:39,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 815 [2020-10-26 21:06:39,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:06:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-26 21:06:39,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 21:06:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:06:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 806 [2020-10-26 21:06:39,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 21:06:40,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:06:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:40,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:40,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:06:40,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:40,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 21:06:40,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:06:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:06:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:06:40,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:06:41,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725162532] [2020-10-26 21:06:41,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:06:41,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:06:41,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789351720] [2020-10-26 21:06:41,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:06:41,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:06:41,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:06:41,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:06:41,893 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-26 21:06:52,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:06:52,424 INFO L93 Difference]: Finished difference Result 2677 states and 5140 transitions. [2020-10-26 21:06:52,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:06:52,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 799 [2020-10-26 21:06:52,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:06:52,464 INFO L225 Difference]: With dead ends: 2677 [2020-10-26 21:06:52,464 INFO L226 Difference]: Without dead ends: 1703 [2020-10-26 21:06:52,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:06:52,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-26 21:06:52,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1699. [2020-10-26 21:06:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-10-26 21:06:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2781 transitions. [2020-10-26 21:06:52,678 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2781 transitions. Word has length 799 [2020-10-26 21:06:52,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:06:52,681 INFO L481 AbstractCegarLoop]: Abstraction has 1699 states and 2781 transitions. [2020-10-26 21:06:52,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:06:52,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2781 transitions. [2020-10-26 21:06:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2020-10-26 21:06:52,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:06:52,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:06:52,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:06:52,719 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:06:52,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:06:52,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1556708967, now seen corresponding path program 1 times [2020-10-26 21:06:52,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:06:52,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378505629] [2020-10-26 21:06:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:06:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:52,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:54,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:57,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:57,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 828 [2020-10-26 21:06:57,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:06:57,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-26 21:06:57,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:06:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:06:57,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 21:06:57,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 21:06:58,395 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:06:58,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:06:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:58,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:58,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:58,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:06:58,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:58,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 21:06:58,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:06:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:06:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:06:58,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:58,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:06:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:58,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:58,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:58,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 21:06:58,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:58,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:06:58,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:06:58,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:06:58,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:06:58,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:06:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:06:59,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378505629] [2020-10-26 21:06:59,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:06:59,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:06:59,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568622037] [2020-10-26 21:06:59,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:06:59,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:06:59,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:06:59,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:06:59,033 INFO L87 Difference]: Start difference. First operand 1699 states and 2781 transitions. Second operand 7 states. [2020-10-26 21:06:59,187 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:07:08,121 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 21:07:11,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:07:11,470 INFO L93 Difference]: Finished difference Result 5142 states and 8467 transitions. [2020-10-26 21:07:11,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 21:07:11,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 810 [2020-10-26 21:07:11,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:07:11,500 INFO L225 Difference]: With dead ends: 5142 [2020-10-26 21:07:11,501 INFO L226 Difference]: Without dead ends: 3449 [2020-10-26 21:07:11,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:07:11,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2020-10-26 21:07:11,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 3437. [2020-10-26 21:07:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3437 states. [2020-10-26 21:07:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 5342 transitions. [2020-10-26 21:07:11,649 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 5342 transitions. Word has length 810 [2020-10-26 21:07:11,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:07:11,649 INFO L481 AbstractCegarLoop]: Abstraction has 3437 states and 5342 transitions. [2020-10-26 21:07:11,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:07:11,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 5342 transitions. [2020-10-26 21:07:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2020-10-26 21:07:11,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:07:11,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:07:11,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:07:11,668 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:07:11,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:07:11,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1523531445, now seen corresponding path program 1 times [2020-10-26 21:07:11,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:07:11,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297944762] [2020-10-26 21:07:11,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:07:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:11,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:12,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:15,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:16,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:16,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 830 [2020-10-26 21:07:16,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:07:16,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 21:07:16,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:07:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:07:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 21:07:16,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:16,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:07:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:17,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:17,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:17,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:07:17,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:17,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 21:07:17,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:07:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:07:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:07:17,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:17,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:07:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:17,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:17,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:17,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 21:07:17,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:17,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 21:07:17,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:17,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:17,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:17,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:07:17,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:07:17,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297944762] [2020-10-26 21:07:17,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:07:17,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 21:07:17,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829028090] [2020-10-26 21:07:17,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:07:17,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:07:17,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:07:17,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:07:17,464 INFO L87 Difference]: Start difference. First operand 3437 states and 5342 transitions. Second operand 8 states. [2020-10-26 21:07:17,609 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:07:18,842 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:07:21,674 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:07:37,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:07:37,590 INFO L93 Difference]: Finished difference Result 13962 states and 22565 transitions. [2020-10-26 21:07:37,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 21:07:37,591 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 812 [2020-10-26 21:07:37,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:07:37,650 INFO L225 Difference]: With dead ends: 13962 [2020-10-26 21:07:37,650 INFO L226 Difference]: Without dead ends: 10531 [2020-10-26 21:07:37,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 21:07:37,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10531 states. [2020-10-26 21:07:37,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10531 to 10509. [2020-10-26 21:07:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10509 states. [2020-10-26 21:07:37,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10509 states to 10509 states and 15212 transitions. [2020-10-26 21:07:37,975 INFO L78 Accepts]: Start accepts. Automaton has 10509 states and 15212 transitions. Word has length 812 [2020-10-26 21:07:37,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:07:37,975 INFO L481 AbstractCegarLoop]: Abstraction has 10509 states and 15212 transitions. [2020-10-26 21:07:37,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:07:37,975 INFO L276 IsEmpty]: Start isEmpty. Operand 10509 states and 15212 transitions. [2020-10-26 21:07:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2020-10-26 21:07:38,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:07:38,023 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:07:38,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:07:38,024 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:07:38,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:07:38,025 INFO L82 PathProgramCache]: Analyzing trace with hash 469147668, now seen corresponding path program 1 times [2020-10-26 21:07:38,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:07:38,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378129491] [2020-10-26 21:07:38,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:07:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:38,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:38,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:40,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:41,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:43,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:43,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 907 [2020-10-26 21:07:43,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:07:43,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-26 21:07:43,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:07:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:07:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 21:07:43,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:43,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:07:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:43,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:43,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:43,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:07:43,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:43,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 21:07:43,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:07:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:07:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:07:43,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:43,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:07:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:43,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:43,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:43,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:43,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 21:07:43,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:07:43,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 21:07:43,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:43,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:43,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:43,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 21:07:43,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:43,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 21:07:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:43,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:43,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:43,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-26 21:07:43,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:43,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 21:07:43,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:43,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:43,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:43,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-26 21:07:43,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 83 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 21:07:44,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378129491] [2020-10-26 21:07:44,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:07:44,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:07:44,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481261147] [2020-10-26 21:07:44,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:07:44,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:07:44,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:07:44,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:07:44,439 INFO L87 Difference]: Start difference. First operand 10509 states and 15212 transitions. Second operand 8 states. [2020-10-26 21:07:59,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:07:59,315 INFO L93 Difference]: Finished difference Result 31831 states and 51523 transitions. [2020-10-26 21:07:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 21:07:59,316 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 887 [2020-10-26 21:07:59,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:07:59,436 INFO L225 Difference]: With dead ends: 31831 [2020-10-26 21:07:59,436 INFO L226 Difference]: Without dead ends: 21328 [2020-10-26 21:07:59,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 21:07:59,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21328 states. [2020-10-26 21:08:00,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21328 to 20981. [2020-10-26 21:08:00,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20981 states. [2020-10-26 21:08:00,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20981 states to 20981 states and 28527 transitions. [2020-10-26 21:08:00,236 INFO L78 Accepts]: Start accepts. Automaton has 20981 states and 28527 transitions. Word has length 887 [2020-10-26 21:08:00,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:08:00,236 INFO L481 AbstractCegarLoop]: Abstraction has 20981 states and 28527 transitions. [2020-10-26 21:08:00,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:08:00,237 INFO L276 IsEmpty]: Start isEmpty. Operand 20981 states and 28527 transitions. [2020-10-26 21:08:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2020-10-26 21:08:00,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:08:00,318 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:08:00,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:08:00,319 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:08:00,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:08:00,320 INFO L82 PathProgramCache]: Analyzing trace with hash -869243903, now seen corresponding path program 1 times [2020-10-26 21:08:00,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:08:00,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733461784] [2020-10-26 21:08:00,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:08:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:00,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:00,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:01,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:05,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:05,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 916 [2020-10-26 21:08:05,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:08:05,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-26 21:08:05,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:08:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:08:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:08:05,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:05,922 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:08:05,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:08:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:05,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:05,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:05,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:08:05,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:05,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 21:08:05,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:05,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:08:05,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:08:05,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:05,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:08:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:05,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:06,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:06,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:08:06,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:06,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 21:08:06,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 21:08:06,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 21:08:06,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 21:08:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:06,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:06,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:06,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 21:08:06,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:06,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 21:08:06,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 21:08:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:06,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 91 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 21:08:06,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733461784] [2020-10-26 21:08:06,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:08:06,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:08:06,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737308991] [2020-10-26 21:08:06,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:08:06,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:08:06,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:08:06,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:08:06,632 INFO L87 Difference]: Start difference. First operand 20981 states and 28527 transitions. Second operand 8 states. [2020-10-26 21:08:06,765 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 21:08:14,800 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-26 21:08:20,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:08:20,875 INFO L93 Difference]: Finished difference Result 49895 states and 69636 transitions. [2020-10-26 21:08:20,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:08:20,881 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 896 [2020-10-26 21:08:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:08:20,988 INFO L225 Difference]: With dead ends: 49895 [2020-10-26 21:08:20,989 INFO L226 Difference]: Without dead ends: 28920 [2020-10-26 21:08:21,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-26 21:08:21,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28920 states. [2020-10-26 21:08:21,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28920 to 28835. [2020-10-26 21:08:21,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28835 states. [2020-10-26 21:08:21,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28835 states to 28835 states and 39388 transitions. [2020-10-26 21:08:21,780 INFO L78 Accepts]: Start accepts. Automaton has 28835 states and 39388 transitions. Word has length 896 [2020-10-26 21:08:21,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:08:21,780 INFO L481 AbstractCegarLoop]: Abstraction has 28835 states and 39388 transitions. [2020-10-26 21:08:21,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:08:21,780 INFO L276 IsEmpty]: Start isEmpty. Operand 28835 states and 39388 transitions. [2020-10-26 21:08:21,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2020-10-26 21:08:21,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:08:21,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:08:21,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:08:21,875 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:08:21,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:08:21,876 INFO L82 PathProgramCache]: Analyzing trace with hash 2069906371, now seen corresponding path program 1 times [2020-10-26 21:08:21,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:08:21,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38724083] [2020-10-26 21:08:21,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:08:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:21,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:22,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:22,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:24,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:26,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:26,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 928 [2020-10-26 21:08:26,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:08:26,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 21:08:26,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:26,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:08:26,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:08:26,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 21:08:26,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:27,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:08:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:27,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:27,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:27,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:08:27,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:27,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 21:08:27,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:08:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:08:27,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:27,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:08:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:27,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:27,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:27,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:27,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:08:27,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:08:27,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:08:27,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:27,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:27,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:27,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:08:27,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:27,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:08:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:27,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:27,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:27,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 21:08:27,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 21:08:27,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 21:08:27,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:27,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 21:08:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:27,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:27,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:27,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 21:08:27,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:27,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 21:08:27,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 21:08:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:27,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 103 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 21:08:27,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38724083] [2020-10-26 21:08:27,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:08:27,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:08:27,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895641161] [2020-10-26 21:08:27,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:08:27,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:08:27,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:08:27,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:08:27,884 INFO L87 Difference]: Start difference. First operand 28835 states and 39388 transitions. Second operand 8 states. [2020-10-26 21:08:28,015 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 21:08:35,390 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-26 21:08:40,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:08:40,567 INFO L93 Difference]: Finished difference Result 58110 states and 83195 transitions. [2020-10-26 21:08:40,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 21:08:40,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 906 [2020-10-26 21:08:40,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:08:40,685 INFO L225 Difference]: With dead ends: 58110 [2020-10-26 21:08:40,685 INFO L226 Difference]: Without dead ends: 29281 [2020-10-26 21:08:40,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-26 21:08:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29281 states. [2020-10-26 21:08:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29281 to 28908. [2020-10-26 21:08:41,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28908 states. [2020-10-26 21:08:41,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28908 states to 28908 states and 39501 transitions. [2020-10-26 21:08:41,522 INFO L78 Accepts]: Start accepts. Automaton has 28908 states and 39501 transitions. Word has length 906 [2020-10-26 21:08:41,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:08:41,522 INFO L481 AbstractCegarLoop]: Abstraction has 28908 states and 39501 transitions. [2020-10-26 21:08:41,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:08:41,522 INFO L276 IsEmpty]: Start isEmpty. Operand 28908 states and 39501 transitions. [2020-10-26 21:08:41,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2020-10-26 21:08:41,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:08:41,578 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:08:41,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 21:08:41,579 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:08:41,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:08:41,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1230348110, now seen corresponding path program 1 times [2020-10-26 21:08:41,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:08:41,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503058136] [2020-10-26 21:08:41,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:08:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:41,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:42,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:42,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:44,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:46,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:46,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 937 [2020-10-26 21:08:46,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:08:46,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-26 21:08:46,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:46,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:08:46,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:08:46,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 21:08:46,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:47,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:08:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:47,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:47,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:08:47,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:47,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:08:47,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:47,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:08:47,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:47,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:08:47,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:47,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:08:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:47,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:47,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:47,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:08:47,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:08:47,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 21:08:47,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:47,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:47,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:08:47,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:47,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:08:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:47,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:47,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:47,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:47,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:08:47,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:08:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 21:08:47,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 21:08:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:47,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 21:08:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:47,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:47,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:47,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 21:08:47,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:47,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 21:08:47,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:47,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:47,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:47,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 21:08:47,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 109 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-26 21:08:47,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503058136] [2020-10-26 21:08:47,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:08:47,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 21:08:47,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180763470] [2020-10-26 21:08:47,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:08:47,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:08:47,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:08:47,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:08:47,830 INFO L87 Difference]: Start difference. First operand 28908 states and 39501 transitions. Second operand 7 states. [2020-10-26 21:08:52,155 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:09:01,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:09:01,353 INFO L93 Difference]: Finished difference Result 80712 states and 115130 transitions. [2020-10-26 21:09:01,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:09:01,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 915 [2020-10-26 21:09:01,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:09:01,548 INFO L225 Difference]: With dead ends: 80712 [2020-10-26 21:09:01,548 INFO L226 Difference]: Without dead ends: 51810 [2020-10-26 21:09:01,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:09:01,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51810 states. [2020-10-26 21:09:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51810 to 51672. [2020-10-26 21:09:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51672 states. [2020-10-26 21:09:02,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51672 states to 51672 states and 66710 transitions. [2020-10-26 21:09:02,818 INFO L78 Accepts]: Start accepts. Automaton has 51672 states and 66710 transitions. Word has length 915 [2020-10-26 21:09:02,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:09:02,818 INFO L481 AbstractCegarLoop]: Abstraction has 51672 states and 66710 transitions. [2020-10-26 21:09:02,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:09:02,818 INFO L276 IsEmpty]: Start isEmpty. Operand 51672 states and 66710 transitions. [2020-10-26 21:09:02,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2020-10-26 21:09:02,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:09:02,900 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:09:02,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 21:09:02,900 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:09:02,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:09:02,901 INFO L82 PathProgramCache]: Analyzing trace with hash 869139171, now seen corresponding path program 1 times [2020-10-26 21:09:02,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:09:02,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857984484] [2020-10-26 21:09:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:09:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:03,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:03,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:03,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:08,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:08,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 944 [2020-10-26 21:09:08,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:09:08,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 21:09:08,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:09:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:09:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 21:09:08,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:08,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:09:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:08,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:08,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:08,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:09:08,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:08,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 21:09:08,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:08,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:08,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:09:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:08,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:08,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:08,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:09:08,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:08,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 21:09:08,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:08,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:09:08,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:08,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:09:08,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:08,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:09:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:08,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:08,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:08,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:09:08,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 21:09:08,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:09:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:09:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:09:08,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:08,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 21:09:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:08,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:08,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:08,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 21:09:08,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:08,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 21:09:08,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:09:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:08,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:08,977 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 134 proven. 30 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-26 21:09:08,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857984484] [2020-10-26 21:09:08,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:09:08,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:09:08,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899226509] [2020-10-26 21:09:08,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:09:08,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:09:08,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:09:08,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:09:08,980 INFO L87 Difference]: Start difference. First operand 51672 states and 66710 transitions. Second operand 7 states. [2020-10-26 21:09:09,223 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:09:11,344 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:09:32,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:09:32,269 INFO L93 Difference]: Finished difference Result 144625 states and 196447 transitions. [2020-10-26 21:09:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:09:32,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 922 [2020-10-26 21:09:32,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:09:32,641 INFO L225 Difference]: With dead ends: 144625 [2020-10-26 21:09:32,642 INFO L226 Difference]: Without dead ends: 93793 [2020-10-26 21:09:32,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:09:32,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93793 states. [2020-10-26 21:09:35,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93793 to 93686. [2020-10-26 21:09:35,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93686 states. [2020-10-26 21:09:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93686 states to 93686 states and 123187 transitions. [2020-10-26 21:09:35,786 INFO L78 Accepts]: Start accepts. Automaton has 93686 states and 123187 transitions. Word has length 922 [2020-10-26 21:09:35,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:09:35,787 INFO L481 AbstractCegarLoop]: Abstraction has 93686 states and 123187 transitions. [2020-10-26 21:09:35,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:09:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 93686 states and 123187 transitions. [2020-10-26 21:09:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2020-10-26 21:09:36,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:09:36,010 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:09:36,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 21:09:36,010 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:09:36,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:09:36,011 INFO L82 PathProgramCache]: Analyzing trace with hash -50744248, now seen corresponding path program 1 times [2020-10-26 21:09:36,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:09:36,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117764886] [2020-10-26 21:09:36,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:09:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:36,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:36,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:36,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:41,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:41,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1071 [2020-10-26 21:09:41,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:09:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-26 21:09:41,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:09:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-26 21:09:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 21:09:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:41,653 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:09:41,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:09:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:41,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:41,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:41,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:09:41,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:41,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 21:09:41,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:41,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:41,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:41,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:41,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:41,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:09:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:41,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:41,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:41,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:09:41,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:41,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 21:09:41,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:41,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:41,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:41,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:41,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:41,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:09:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:41,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:41,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:41,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 21:09:41,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:41,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 21:09:41,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:09:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-26 21:09:41,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:41,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-26 21:09:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:41,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:41,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:41,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:09:41,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:41,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 21:09:41,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:09:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:09:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:09:41,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:42,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-26 21:09:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:42,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:42,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 21:09:42,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:42,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:09:42,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:09:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:42,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 335 proven. 30 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-26 21:09:42,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117764886] [2020-10-26 21:09:42,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:09:42,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:09:42,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976686317] [2020-10-26 21:09:42,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:09:42,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:09:42,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:09:42,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:09:42,548 INFO L87 Difference]: Start difference. First operand 93686 states and 123187 transitions. Second operand 8 states. [2020-10-26 21:09:42,700 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:09:43,195 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 93