/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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:55:30,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:55:30,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:55:30,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:55:30,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:55:30,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:55:30,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:55:30,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:55:30,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:55:30,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:55:30,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:55:30,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:55:30,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:55:30,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:55:30,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:55:30,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:55:30,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:55:30,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:55:30,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:55:30,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:55:30,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:55:30,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:55:30,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:55:30,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:55:30,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:55:30,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:55:30,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:55:30,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:55:30,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:55:30,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:55:30,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:55:30,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:55:30,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:55:30,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:55:30,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:55:30,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:55:30,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:55:30,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:55:30,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:55:30,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:55:30,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:55:30,305 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 20:55:30,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:55:30,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:55:30,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:55:30,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:55:30,362 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:55:30,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:55:30,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:55:30,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:55:30,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:55:30,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:55:30,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:55:30,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:55:30,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:55:30,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:55:30,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:55:30,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:55:30,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:55:30,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:55:30,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:55:30,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:55:30,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:55:30,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:55:30,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:55:30,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:55:30,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:55:30,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:55:30,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:55:30,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:55:30,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:55:30,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:55:30,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:55:30,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:55:30,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:55:30,830 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:55:30,830 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:55:30,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label07.c [2020-10-26 20:55:30,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ac9785f2/dfc3758d0c01457db890ae022293062d/FLAGca459c245 [2020-10-26 20:55:32,036 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:55:32,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label07.c [2020-10-26 20:55:32,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ac9785f2/dfc3758d0c01457db890ae022293062d/FLAGca459c245 [2020-10-26 20:55:32,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ac9785f2/dfc3758d0c01457db890ae022293062d [2020-10-26 20:55:32,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:55:32,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:55:32,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:55:32,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:55:32,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:55:32,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:55:32" (1/1) ... [2020-10-26 20:55:32,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5130b99f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:55:32, skipping insertion in model container [2020-10-26 20:55:32,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:55:32" (1/1) ... [2020-10-26 20:55:32,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:55:32,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:55:34,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:55:34,215 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:55:35,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:55:35,159 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:55:35,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:55:35 WrapperNode [2020-10-26 20:55:35,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:55:35,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:55:35,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:55:35,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:55:35,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:55:35" (1/1) ... [2020-10-26 20:55:35,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:55:35" (1/1) ... [2020-10-26 20:55:35,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:55:35" (1/1) ... [2020-10-26 20:55:35,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:55:35" (1/1) ... [2020-10-26 20:55:35,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:55:35" (1/1) ... [2020-10-26 20:55:35,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:55:35" (1/1) ... [2020-10-26 20:55:35,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:55:35" (1/1) ... [2020-10-26 20:55:35,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:55:35,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:55:35,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:55:35,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:55:35,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:55:35" (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 20:55:35,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:55:35,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:55:35,657 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:55:35,658 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:55:35,658 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 20:55:35,658 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 20:55:35,659 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 20:55:35,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:55:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:55:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 20:55:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 20:55:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 20:55:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:55:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:55:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:55:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:55:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:55:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:55:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:55:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:55:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:55:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:55:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:55:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:55:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:55:41,160 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:55:41,160 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:55:41,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:55:41 BoogieIcfgContainer [2020-10-26 20:55:41,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:55:41,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:55:41,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:55:41,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:55:41,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:55:32" (1/3) ... [2020-10-26 20:55:41,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c3672a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:55:41, skipping insertion in model container [2020-10-26 20:55:41,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:55:35" (2/3) ... [2020-10-26 20:55:41,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c3672a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:55:41, skipping insertion in model container [2020-10-26 20:55:41,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:55:41" (3/3) ... [2020-10-26 20:55:41,173 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label07.c [2020-10-26 20:55:41,186 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:55:41,192 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:55:41,206 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:55:41,240 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:55:41,241 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:55:41,241 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:55:41,241 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:55:41,241 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:55:41,241 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:55:41,241 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:55:41,242 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:55:41,277 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-26 20:55:41,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2020-10-26 20:55:41,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:55:41,336 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, 1, 1, 1] [2020-10-26 20:55:41,336 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:55:41,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:55:41,343 INFO L82 PathProgramCache]: Analyzing trace with hash -329586596, now seen corresponding path program 1 times [2020-10-26 20:55:41,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:55:41,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983333032] [2020-10-26 20:55:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:55:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:55:42,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:55:46,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:55:47,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:55:47,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 818 [2020-10-26 20:55:47,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:55:47,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 20:55:47,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:55:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 20:55:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:55:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 809 [2020-10-26 20:55:47,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:55:48,155 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:55:48,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:55:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:55:48,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:55:48,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:55:48,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:55:48,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:55:48,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 20:55:48,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:55:48,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:55:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:55:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:55:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:55:49,277 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 20:55:49,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983333032] [2020-10-26 20:55:49,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:55:49,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 20:55:49,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903484245] [2020-10-26 20:55:49,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:55:49,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:55:49,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:55:49,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:55:49,308 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-26 20:55:49,498 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:56:01,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:56:01,387 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-26 20:56:01,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:56:01,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 802 [2020-10-26 20:56:01,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:56:01,431 INFO L225 Difference]: With dead ends: 2677 [2020-10-26 20:56:01,431 INFO L226 Difference]: Without dead ends: 1703 [2020-10-26 20:56:01,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:56:01,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-26 20:56:01,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-26 20:56:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-26 20:56:01,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2730 transitions. [2020-10-26 20:56:01,595 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2730 transitions. Word has length 802 [2020-10-26 20:56:01,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:56:01,598 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 2730 transitions. [2020-10-26 20:56:01,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:56:01,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2730 transitions. [2020-10-26 20:56:01,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2020-10-26 20:56:01,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:56:01,633 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2020-10-26 20:56:01,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:56:01,634 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:56:01,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:56:01,635 INFO L82 PathProgramCache]: Analyzing trace with hash -591762498, now seen corresponding path program 1 times [2020-10-26 20:56:01,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:56:01,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337087559] [2020-10-26 20:56:01,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:56:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:56:01,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:56:03,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:56:06,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:56:06,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:56:06,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 828 [2020-10-26 20:56:06,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:56:06,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 20:56:06,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:56:06,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:56:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:56:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:56:06,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:56:06,972 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:56:06,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:56:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:56:06,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:56:06,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:56:06,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:56:06,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:56:06,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:56:06,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:56:06,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:56:06,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:56:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:56:06,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:56:07,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:56:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:56:07,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:56:07,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:56:07,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:56:07,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:56:07,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:56:07,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:56:07,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:56:07,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:56:07,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:56:07,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:56:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:56:07,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337087559] [2020-10-26 20:56:07,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:56:07,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:56:07,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826541762] [2020-10-26 20:56:07,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:56:07,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:56:07,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:56:07,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:56:07,559 INFO L87 Difference]: Start difference. First operand 1690 states and 2730 transitions. Second operand 7 states. [2020-10-26 20:56:07,707 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:56:10,321 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 20:56:22,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:56:22,574 INFO L93 Difference]: Finished difference Result 5194 states and 8423 transitions. [2020-10-26 20:56:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:56:22,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 810 [2020-10-26 20:56:22,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:56:22,595 INFO L225 Difference]: With dead ends: 5194 [2020-10-26 20:56:22,595 INFO L226 Difference]: Without dead ends: 3510 [2020-10-26 20:56:22,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 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 20:56:22,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3510 states. [2020-10-26 20:56:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3510 to 3438. [2020-10-26 20:56:22,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3438 states. [2020-10-26 20:56:22,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3438 states to 3438 states and 4979 transitions. [2020-10-26 20:56:22,780 INFO L78 Accepts]: Start accepts. Automaton has 3438 states and 4979 transitions. Word has length 810 [2020-10-26 20:56:22,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:56:22,781 INFO L481 AbstractCegarLoop]: Abstraction has 3438 states and 4979 transitions. [2020-10-26 20:56:22,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:56:22,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3438 states and 4979 transitions. [2020-10-26 20:56:22,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2020-10-26 20:56:22,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:56:22,799 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, 1, 1, 1] [2020-10-26 20:56:22,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:56:22,800 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:56:22,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:56:22,803 INFO L82 PathProgramCache]: Analyzing trace with hash 616828509, now seen corresponding path program 1 times [2020-10-26 20:56:22,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:56:22,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898340689] [2020-10-26 20:56:22,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:56:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:56:22,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:56:23,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:56:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:56:27,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:56:27,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-26 20:56:27,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:56:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-26 20:56:27,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:56:27,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:56:27,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:56:27,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 20:56:27,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:56:28,193 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:56:28,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:56:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:56:28,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:56:28,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:56:28,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:56:28,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:56:28,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:56:28,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:56:28,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:56:28,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:56:28,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:56:28,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:56:28,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:56:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:56:28,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:56:28,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:56:28,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:56:28,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:56:28,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 20:56:28,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:56:28,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:56:28,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:56:28,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:56:28,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:56:28,678 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 20:56:28,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898340689] [2020-10-26 20:56:28,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:56:28,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:56:28,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92091107] [2020-10-26 20:56:28,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:56:28,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:56:28,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:56:28,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:56:28,682 INFO L87 Difference]: Start difference. First operand 3438 states and 4979 transitions. Second operand 7 states. [2020-10-26 20:56:28,830 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:56:39,667 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 20:56:43,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:56:43,675 INFO L93 Difference]: Finished difference Result 10491 states and 15514 transitions. [2020-10-26 20:56:43,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:56:43,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 813 [2020-10-26 20:56:43,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:56:43,714 INFO L225 Difference]: With dead ends: 10491 [2020-10-26 20:56:43,715 INFO L226 Difference]: Without dead ends: 7059 [2020-10-26 20:56:43,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 20:56:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7059 states. [2020-10-26 20:56:43,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7059 to 6985. [2020-10-26 20:56:43,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6985 states. [2020-10-26 20:56:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6985 states to 6985 states and 9835 transitions. [2020-10-26 20:56:43,993 INFO L78 Accepts]: Start accepts. Automaton has 6985 states and 9835 transitions. Word has length 813 [2020-10-26 20:56:43,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:56:43,994 INFO L481 AbstractCegarLoop]: Abstraction has 6985 states and 9835 transitions. [2020-10-26 20:56:43,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:56:43,994 INFO L276 IsEmpty]: Start isEmpty. Operand 6985 states and 9835 transitions. [2020-10-26 20:56:44,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2020-10-26 20:56:44,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:56:44,019 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, 1, 1, 1] [2020-10-26 20:56:44,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:56:44,019 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:56:44,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:56:44,020 INFO L82 PathProgramCache]: Analyzing trace with hash -849006343, now seen corresponding path program 1 times [2020-10-26 20:56:44,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:56:44,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765638748] [2020-10-26 20:56:44,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:56:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:56:44,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:56:45,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:56:47,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:56:49,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:56:49,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 833 [2020-10-26 20:56:49,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:56:49,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-26 20:56:49,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:56:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:56:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:56:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 20:56:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:56:49,417 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:56:49,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:56:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:56:49,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:56:49,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:56:49,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:56:49,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:56:49,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:56:49,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:56:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:56:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:56:49,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:56:49,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:56:49,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:56:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:56:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:56:49,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:56:49,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:56:49,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:56:49,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 20:56:49,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:56:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:56:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:56:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:56:49,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:56:49,935 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 20:56:49,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765638748] [2020-10-26 20:56:49,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:56:49,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 20:56:49,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744125201] [2020-10-26 20:56:49,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:56:49,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:56:49,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:56:49,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:56:49,941 INFO L87 Difference]: Start difference. First operand 6985 states and 9835 transitions. Second operand 8 states. [2020-10-26 20:56:50,113 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:56:51,549 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 20:56:54,426 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:57:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:57:10,521 INFO L93 Difference]: Finished difference Result 28165 states and 41824 transitions. [2020-10-26 20:57:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:57:10,522 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 815 [2020-10-26 20:57:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:57:10,638 INFO L225 Difference]: With dead ends: 28165 [2020-10-26 20:57:10,638 INFO L226 Difference]: Without dead ends: 21186 [2020-10-26 20:57:10,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 20:57:10,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21186 states. [2020-10-26 20:57:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21186 to 21145. [2020-10-26 20:57:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21145 states. [2020-10-26 20:57:11,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21145 states to 21145 states and 28632 transitions. [2020-10-26 20:57:11,350 INFO L78 Accepts]: Start accepts. Automaton has 21145 states and 28632 transitions. Word has length 815 [2020-10-26 20:57:11,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:57:11,351 INFO L481 AbstractCegarLoop]: Abstraction has 21145 states and 28632 transitions. [2020-10-26 20:57:11,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:57:11,351 INFO L276 IsEmpty]: Start isEmpty. Operand 21145 states and 28632 transitions. [2020-10-26 20:57:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2020-10-26 20:57:11,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:57:11,412 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:11,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:57:11,413 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:57:11,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:57:11,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1987940815, now seen corresponding path program 1 times [2020-10-26 20:57:11,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:57:11,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050977941] [2020-10-26 20:57:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:57:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:57:11,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:14,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:16,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:57:16,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 837 [2020-10-26 20:57:16,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:57:16,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-26 20:57:16,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:57:16,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:57:16,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:57:16,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 20:57:16,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:57:16,745 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:57:16,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:57:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:57:16,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:16,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:57:16,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:57:16,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:57:16,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:57:16,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:57:16,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:57:16,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:57:16,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:57:16,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:57:16,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:57:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:57:16,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:16,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:57:16,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:57:16,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:57:16,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 20:57:16,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:57:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:57:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:57:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:57:16,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:57:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:57:17,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050977941] [2020-10-26 20:57:17,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:57:17,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:57:17,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37443134] [2020-10-26 20:57:17,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:57:17,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:57:17,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:57:17,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:57:17,235 INFO L87 Difference]: Start difference. First operand 21145 states and 28632 transitions. Second operand 7 states. [2020-10-26 20:57:17,387 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:57:25,655 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-26 20:57:31,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:57:31,463 INFO L93 Difference]: Finished difference Result 51304 states and 70863 transitions. [2020-10-26 20:57:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:57:31,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 819 [2020-10-26 20:57:31,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:57:31,571 INFO L225 Difference]: With dead ends: 51304 [2020-10-26 20:57:31,571 INFO L226 Difference]: Without dead ends: 30165 [2020-10-26 20:57:31,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:57:31,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30165 states. [2020-10-26 20:57:32,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30165 to 30030. [2020-10-26 20:57:32,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30030 states. [2020-10-26 20:57:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30030 states to 30030 states and 39772 transitions. [2020-10-26 20:57:32,425 INFO L78 Accepts]: Start accepts. Automaton has 30030 states and 39772 transitions. Word has length 819 [2020-10-26 20:57:32,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:57:32,426 INFO L481 AbstractCegarLoop]: Abstraction has 30030 states and 39772 transitions. [2020-10-26 20:57:32,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:57:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 30030 states and 39772 transitions. [2020-10-26 20:57:32,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2020-10-26 20:57:32,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:57:32,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:32,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:57:32,501 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:57:32,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:57:32,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1394668753, now seen corresponding path program 1 times [2020-10-26 20:57:32,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:57:32,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924839087] [2020-10-26 20:57:32,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:57:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:57:32,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:32,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:36,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:37,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:57:37,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 849 [2020-10-26 20:57:37,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:57:37,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-26 20:57:37,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:57:37,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:57:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:57:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 20:57:37,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:57:37,963 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:57:37,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:57:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:57:37,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:37,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:57:37,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:57:37,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:57:37,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:57:37,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:57:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:57:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:57:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:57:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:57:38,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:57:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:57:38,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:38,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:38,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:57:38,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:57:38,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:57:38,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 20:57:38,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:57:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:57:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:57:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:57:38,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:57:38,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 20:57:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:57:38,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:38,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:57:38,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:57:38,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:57:38,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:57:38,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:57:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:57:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:57:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:57:38,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:57:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:57:38,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924839087] [2020-10-26 20:57:38,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:57:38,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:57:38,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148227737] [2020-10-26 20:57:38,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:57:38,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:57:38,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:57:38,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:57:38,560 INFO L87 Difference]: Start difference. First operand 30030 states and 39772 transitions. Second operand 8 states. [2020-10-26 20:57:38,724 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:57:41,933 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 20:57:52,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:57:52,938 INFO L93 Difference]: Finished difference Result 64642 states and 86325 transitions. [2020-10-26 20:57:52,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 20:57:52,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 829 [2020-10-26 20:57:52,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:57:53,049 INFO L225 Difference]: With dead ends: 64642 [2020-10-26 20:57:53,050 INFO L226 Difference]: Without dead ends: 35452 [2020-10-26 20:57:53,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-26 20:57:53,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35452 states. [2020-10-26 20:57:53,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35452 to 35340. [2020-10-26 20:57:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35340 states. [2020-10-26 20:57:53,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35340 states to 35340 states and 46338 transitions. [2020-10-26 20:57:53,985 INFO L78 Accepts]: Start accepts. Automaton has 35340 states and 46338 transitions. Word has length 829 [2020-10-26 20:57:53,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:57:53,986 INFO L481 AbstractCegarLoop]: Abstraction has 35340 states and 46338 transitions. [2020-10-26 20:57:53,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:57:53,986 INFO L276 IsEmpty]: Start isEmpty. Operand 35340 states and 46338 transitions. [2020-10-26 20:57:54,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2020-10-26 20:57:54,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:57:54,049 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:57:54,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:57:54,050 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:57:54,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:57:54,050 INFO L82 PathProgramCache]: Analyzing trace with hash 327917024, now seen corresponding path program 1 times [2020-10-26 20:57:54,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:57:54,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761824896] [2020-10-26 20:57:54,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:57:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:57:54,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:59,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:57:59,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 858 [2020-10-26 20:57:59,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:57:59,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4839 [2020-10-26 20:57:59,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:57:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 20:57:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 20:57:59,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 806 [2020-10-26 20:57:59,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:57:59,570 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:57:59,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:57:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:57:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:59,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:57:59,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:57:59,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:57:59,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:57:59,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:57:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:57:59,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:57:59,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:57:59,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:57:59,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:57:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:57:59,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:59,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:57:59,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:57:59,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:57:59,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:57:59,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:57:59,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:57:59,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:57:59,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:57:59,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:57:59,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 20:57:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:57:59,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:57:59,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:57:59,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:57:59,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:57:59,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:57:59,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:57:59,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:57:59,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:57:59,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:57:59,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:58:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-26 20:58:00,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761824896] [2020-10-26 20:58:00,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:58:00,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:58:00,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521605617] [2020-10-26 20:58:00,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:58:00,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:58:00,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:58:00,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:58:00,383 INFO L87 Difference]: Start difference. First operand 35340 states and 46338 transitions. Second operand 6 states. [2020-10-26 20:58:00,673 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 20:58:00,999 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:58:19,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:58:19,376 INFO L93 Difference]: Finished difference Result 84957 states and 115308 transitions. [2020-10-26 20:58:19,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:58:19,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 838 [2020-10-26 20:58:19,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:58:19,554 INFO L225 Difference]: With dead ends: 84957 [2020-10-26 20:58:19,554 INFO L226 Difference]: Without dead ends: 50457 [2020-10-26 20:58:19,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:58:19,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50457 states. [2020-10-26 20:58:20,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50457 to 50436. [2020-10-26 20:58:20,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50436 states. [2020-10-26 20:58:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50436 states to 50436 states and 62251 transitions. [2020-10-26 20:58:20,806 INFO L78 Accepts]: Start accepts. Automaton has 50436 states and 62251 transitions. Word has length 838 [2020-10-26 20:58:20,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:58:20,807 INFO L481 AbstractCegarLoop]: Abstraction has 50436 states and 62251 transitions. [2020-10-26 20:58:20,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:58:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 50436 states and 62251 transitions. [2020-10-26 20:58:20,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2020-10-26 20:58:20,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:58:20,896 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 20:58:20,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:58:20,896 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:58:20,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:58:20,897 INFO L82 PathProgramCache]: Analyzing trace with hash 244850781, now seen corresponding path program 1 times [2020-10-26 20:58:20,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:58:20,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577631678] [2020-10-26 20:58:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:58:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:58:21,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:58:21,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:58:23,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:58:24,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:58:26,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:58:26,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1029 [2020-10-26 20:58:26,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:58:26,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-26 20:58:26,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:58:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:58:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 20:58:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 20:58:26,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:58:26,369 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:58:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:58:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:58:26,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:58:26,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:58:26,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:58:26,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:58:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:58:26,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:58:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:58:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:58:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:58:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:58:26,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:58:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:58:26,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:58:26,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:58:26,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:58:26,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:58:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:58:26,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:58:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:58:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:58:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:58:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:58:26,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 20:58:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:58:26,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:58:26,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:58:26,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 20:58:26,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:58:26,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 20:58:26,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:58:26,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:58:26,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:58:26,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 20:58:26,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:58:26,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 20:58:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:58:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:58:26,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:58:26,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 20:58:26,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:58:26,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 20:58:26,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:58:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:58:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-26 20:58:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:58:26,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:58:27,169 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 216 proven. 72 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-26 20:58:27,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577631678] [2020-10-26 20:58:27,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:58:27,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:58:27,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146207713] [2020-10-26 20:58:27,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:58:27,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:58:27,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:58:27,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:58:27,172 INFO L87 Difference]: Start difference. First operand 50436 states and 62251 transitions. Second operand 7 states. [2020-10-26 20:58:27,505 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:58:30,001 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:58:52,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:58:52,817 INFO L93 Difference]: Finished difference Result 153426 states and 197985 transitions. [2020-10-26 20:58:52,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:58:52,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1007 [2020-10-26 20:58:52,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:58:53,180 INFO L225 Difference]: With dead ends: 153426 [2020-10-26 20:58:53,180 INFO L226 Difference]: Without dead ends: 103830 [2020-10-26 20:58:53,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:58:53,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103830 states. [2020-10-26 20:58:55,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103830 to 103789. [2020-10-26 20:58:55,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103789 states. [2020-10-26 20:58:56,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103789 states to 103789 states and 131781 transitions. [2020-10-26 20:58:56,342 INFO L78 Accepts]: Start accepts. Automaton has 103789 states and 131781 transitions. Word has length 1007 [2020-10-26 20:58:56,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:58:56,342 INFO L481 AbstractCegarLoop]: Abstraction has 103789 states and 131781 transitions. [2020-10-26 20:58:56,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:58:56,343 INFO L276 IsEmpty]: Start isEmpty. Operand 103789 states and 131781 transitions. [2020-10-26 20:58:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2020-10-26 20:58:56,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:58:56,782 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:56,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 20:58:56,782 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:58:56,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:58:56,783 INFO L82 PathProgramCache]: Analyzing trace with hash -307625281, now seen corresponding path program 1 times [2020-10-26 20:58:56,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:58:56,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202784856] [2020-10-26 20:58:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:58:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:58:57,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:58:57,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:58:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:58:57,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:58:58,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:02,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:02,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1105 [2020-10-26 20:59:02,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:59:02,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-26 20:59:02,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:59:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 20:59:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 20:59:02,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:02,359 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:59:02,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:59:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:02,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:02,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:02,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:59:02,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:02,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:59:02,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:59:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:59:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:59:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:02,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:59:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:02,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:02,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:02,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:59:02,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:02,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:59:02,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:02,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:59:02,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:59:02,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:59:02,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:02,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 20:59:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:02,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:02,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:02,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 20:59:02,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:02,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-26 20:59:02,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:59:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:59:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-26 20:59:02,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:02,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-26 20:59:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:02,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:02,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:59:02,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:59:02,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:59:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-26 20:59:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:59:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:02,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-26 20:59:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:02,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:02,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:02,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:59:02,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:02,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:59:02,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:02,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:59:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 20:59:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:59:02,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:02,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-26 20:59:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:02,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:02,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:02,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:59:02,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:02,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:59:02,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:02,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:59:02,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-26 20:59:02,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:59:02,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:02,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-26 20:59:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:02,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:02,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:02,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-26 20:59:02,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:02,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 20:59:02,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:02,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:59:02,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-26 20:59:02,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:59:02,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 289 proven. 101 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-26 20:59:03,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202784856] [2020-10-26 20:59:03,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:59:03,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:59:03,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190841076] [2020-10-26 20:59:03,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:59:03,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:59:03,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:59:03,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:59:03,531 INFO L87 Difference]: Start difference. First operand 103789 states and 131781 transitions. Second operand 7 states. [2020-10-26 20:59:03,710 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 94