/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/Problem15_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:48:10,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:48:10,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:48:10,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:48:10,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:48:10,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:48:10,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:48:10,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:48:10,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:48:10,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:48:10,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:48:10,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:48:10,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:48:10,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:48:10,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:48:10,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:48:10,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:48:10,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:48:10,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:48:10,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:48:10,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:48:10,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:48:10,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:48:10,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:48:10,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:48:10,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:48:10,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:48:10,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:48:10,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:48:10,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:48:10,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:48:10,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:48:10,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:48:10,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:48:10,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:48:10,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:48:10,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:48:10,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:48:10,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:48:10,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:48:10,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:48:10,980 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 23:48:11,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:48:11,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:48:11,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:48:11,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:48:11,041 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:48:11,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:48:11,041 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:48:11,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:48:11,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:48:11,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:48:11,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:48:11,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:48:11,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:48:11,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:48:11,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:48:11,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:48:11,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:48:11,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:48:11,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:48:11,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:48:11,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:48:11,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:48:11,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:48:11,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:48:11,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:48:11,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:48:11,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:48:11,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:48:11,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:48:11,047 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:48:11,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:48:11,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:48:11,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:48:11,520 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:48:11,521 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:48:11,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label54.c [2020-10-26 23:48:11,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5cf1dc8d/7271c8566dcc42db9438a9810d74ea25/FLAG55bcff6c2 [2020-10-26 23:48:12,543 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:48:12,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label54.c [2020-10-26 23:48:12,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5cf1dc8d/7271c8566dcc42db9438a9810d74ea25/FLAG55bcff6c2 [2020-10-26 23:48:12,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5cf1dc8d/7271c8566dcc42db9438a9810d74ea25 [2020-10-26 23:48:12,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:48:12,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:48:12,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:48:12,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:48:12,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:48:12,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:48:12" (1/1) ... [2020-10-26 23:48:12,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62601e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:12, skipping insertion in model container [2020-10-26 23:48:12,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:48:12" (1/1) ... [2020-10-26 23:48:12,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:48:12,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:48:13,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:48:13,714 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:48:13,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:48:13,988 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:48:13,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:13 WrapperNode [2020-10-26 23:48:13,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:48:13,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:48:13,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:48:13,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:48:14,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:13" (1/1) ... [2020-10-26 23:48:14,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:13" (1/1) ... [2020-10-26 23:48:14,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:13" (1/1) ... [2020-10-26 23:48:14,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:13" (1/1) ... [2020-10-26 23:48:14,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:13" (1/1) ... [2020-10-26 23:48:14,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:13" (1/1) ... [2020-10-26 23:48:14,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:13" (1/1) ... [2020-10-26 23:48:14,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:48:14,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:48:14,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:48:14,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:48:14,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:13" (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 23:48:14,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:48:14,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:48:14,359 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:48:14,359 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:48:14,359 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:48:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:48:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:48:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:48:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:48:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:48:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:48:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:48:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:48:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:48:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:48:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:48:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:48:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:48:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:48:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:48:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:48:18,207 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:48:18,208 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:48:18,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:48:18 BoogieIcfgContainer [2020-10-26 23:48:18,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:48:18,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:48:18,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:48:18,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:48:18,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:48:12" (1/3) ... [2020-10-26 23:48:18,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69482642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:48:18, skipping insertion in model container [2020-10-26 23:48:18,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:13" (2/3) ... [2020-10-26 23:48:18,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69482642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:48:18, skipping insertion in model container [2020-10-26 23:48:18,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:48:18" (3/3) ... [2020-10-26 23:48:18,225 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label54.c [2020-10-26 23:48:18,241 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:48:18,248 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:48:18,263 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:48:18,313 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:48:18,314 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:48:18,314 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:48:18,314 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:48:18,314 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:48:18,314 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:48:18,314 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:48:18,315 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:48:18,350 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:48:18,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-26 23:48:18,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:18,360 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] [2020-10-26 23:48:18,361 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:18,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:18,368 INFO L82 PathProgramCache]: Analyzing trace with hash -890920153, now seen corresponding path program 1 times [2020-10-26 23:48:18,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:18,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592610913] [2020-10-26 23:48:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:19,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:19,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-26 23:48:19,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:19,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-26 23:48:19,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:19,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:48:19,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:19,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-26 23:48:19,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:48:19,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:19,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:19,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:19,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:19,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:19,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:48:19,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:19,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:19,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:19,488 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 23:48:19,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592610913] [2020-10-26 23:48:19,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:48:19,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:48:19,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382460456] [2020-10-26 23:48:19,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:48:19,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:19,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:48:19,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:48:19,515 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:48:25,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:25,413 INFO L93 Difference]: Finished difference Result 1229 states and 2206 transitions. [2020-10-26 23:48:25,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:48:25,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-26 23:48:25,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:25,440 INFO L225 Difference]: With dead ends: 1229 [2020-10-26 23:48:25,440 INFO L226 Difference]: Without dead ends: 709 [2020-10-26 23:48:25,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:48:25,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-26 23:48:25,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 695. [2020-10-26 23:48:25,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-26 23:48:25,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1081 transitions. [2020-10-26 23:48:25,605 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1081 transitions. Word has length 47 [2020-10-26 23:48:25,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:25,606 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1081 transitions. [2020-10-26 23:48:25,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:48:25,607 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1081 transitions. [2020-10-26 23:48:25,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-26 23:48:25,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:25,613 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:48:25,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:48:25,614 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:25,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:25,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1576645745, now seen corresponding path program 1 times [2020-10-26 23:48:25,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:25,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989595601] [2020-10-26 23:48:25,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:25,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:26,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:26,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:27,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:27,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:27,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:48:27,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:48:27,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1782 [2020-10-26 23:48:27,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:48:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-26 23:48:27,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:48:27,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:27,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:27,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:27,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:27,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:27,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:48:27,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:27,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:27,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:27,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:27,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:48:27,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:27,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:27,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:27,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:48:27,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:48:27,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-26 23:48:27,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:48:27,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:28,032 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:48:28,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989595601] [2020-10-26 23:48:28,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:28,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:48:28,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33682116] [2020-10-26 23:48:28,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:28,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:28,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:28,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:28,042 INFO L87 Difference]: Start difference. First operand 695 states and 1081 transitions. Second operand 7 states. [2020-10-26 23:48:36,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:36,747 INFO L93 Difference]: Finished difference Result 2017 states and 3282 transitions. [2020-10-26 23:48:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:48:36,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-26 23:48:36,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:36,756 INFO L225 Difference]: With dead ends: 2017 [2020-10-26 23:48:36,756 INFO L226 Difference]: Without dead ends: 1328 [2020-10-26 23:48:36,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:48:36,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2020-10-26 23:48:36,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1324. [2020-10-26 23:48:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1324 states. [2020-10-26 23:48:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1885 transitions. [2020-10-26 23:48:36,815 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1885 transitions. Word has length 117 [2020-10-26 23:48:36,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:36,816 INFO L481 AbstractCegarLoop]: Abstraction has 1324 states and 1885 transitions. [2020-10-26 23:48:36,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:36,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1885 transitions. [2020-10-26 23:48:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-26 23:48:36,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:36,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:48:36,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:48:36,823 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:36,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:36,823 INFO L82 PathProgramCache]: Analyzing trace with hash -576279598, now seen corresponding path program 1 times [2020-10-26 23:48:36,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:36,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657658087] [2020-10-26 23:48:36,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:36,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:37,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:38,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:38,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-26 23:48:38,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:48:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2031 [2020-10-26 23:48:38,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:48:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-26 23:48:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:39,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:39,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:39,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:39,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:39,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:39,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:48:39,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:39,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:39,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:39,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:39,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:39,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:39,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:39,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:39,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 23:48:39,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:39,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-26 23:48:39,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:39,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 23:48:39,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:48:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:48:39,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657658087] [2020-10-26 23:48:39,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:48:39,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:48:39,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59818886] [2020-10-26 23:48:39,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:39,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:39,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:39,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:39,525 INFO L87 Difference]: Start difference. First operand 1324 states and 1885 transitions. Second operand 7 states. [2020-10-26 23:48:50,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:50,168 INFO L93 Difference]: Finished difference Result 3296 states and 4911 transitions. [2020-10-26 23:48:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:48:50,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-10-26 23:48:50,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:50,190 INFO L225 Difference]: With dead ends: 3296 [2020-10-26 23:48:50,190 INFO L226 Difference]: Without dead ends: 2285 [2020-10-26 23:48:50,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:48:50,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-10-26 23:48:50,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 1961. [2020-10-26 23:48:50,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-10-26 23:48:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2615 transitions. [2020-10-26 23:48:50,269 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2615 transitions. Word has length 163 [2020-10-26 23:48:50,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:50,270 INFO L481 AbstractCegarLoop]: Abstraction has 1961 states and 2615 transitions. [2020-10-26 23:48:50,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:50,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2615 transitions. [2020-10-26 23:48:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-26 23:48:50,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:50,277 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:48:50,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:48:50,278 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:50,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:50,278 INFO L82 PathProgramCache]: Analyzing trace with hash 722902798, now seen corresponding path program 1 times [2020-10-26 23:48:50,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:50,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047049899] [2020-10-26 23:48:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:50,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:50,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:52,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:55,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:55,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-26 23:48:55,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:48:55,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-26 23:48:55,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:48:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:48:55,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:55,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:55,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:55,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:55,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:55,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:55,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:48:55,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:55,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:55,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:55,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:56,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:56,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:48:56,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:56,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-26 23:48:56,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:48:56,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:56,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:48:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:56,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:56,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:56,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:48:56,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:56,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:48:56,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:48:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:56,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 78 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:48:56,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047049899] [2020-10-26 23:48:56,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:56,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:56,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143265880] [2020-10-26 23:48:56,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:56,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:56,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:56,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:56,915 INFO L87 Difference]: Start difference. First operand 1961 states and 2615 transitions. Second operand 7 states. [2020-10-26 23:48:57,100 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 23:49:06,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:06,224 INFO L93 Difference]: Finished difference Result 4258 states and 5603 transitions. [2020-10-26 23:49:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:49:06,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-10-26 23:49:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:06,246 INFO L225 Difference]: With dead ends: 4258 [2020-10-26 23:49:06,246 INFO L226 Difference]: Without dead ends: 2303 [2020-10-26 23:49:06,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:49:06,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2020-10-26 23:49:06,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2277. [2020-10-26 23:49:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2277 states. [2020-10-26 23:49:06,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2943 transitions. [2020-10-26 23:49:06,345 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2943 transitions. Word has length 327 [2020-10-26 23:49:06,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:06,345 INFO L481 AbstractCegarLoop]: Abstraction has 2277 states and 2943 transitions. [2020-10-26 23:49:06,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:06,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2943 transitions. [2020-10-26 23:49:06,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-26 23:49:06,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:06,355 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:49:06,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:49:06,356 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:06,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1710682711, now seen corresponding path program 1 times [2020-10-26 23:49:06,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:06,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088014362] [2020-10-26 23:49:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:06,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:09,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:09,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-26 23:49:09,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:49:09,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2693 [2020-10-26 23:49:09,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:09,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:49:09,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:49:09,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:49:09,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:09,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:09,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:09,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:09,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:09,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:49:09,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:09,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:49:09,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:09,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:09,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:09,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:49:09,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-26 23:49:09,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:49:09,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:10,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:49:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:10,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:10,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:10,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:49:10,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:10,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 23:49:10,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:10,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:10,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:10,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:49:10,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:49:10,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088014362] [2020-10-26 23:49:10,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:10,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:10,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747574090] [2020-10-26 23:49:10,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:10,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:10,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:10,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:10,461 INFO L87 Difference]: Start difference. First operand 2277 states and 2943 transitions. Second operand 7 states. [2020-10-26 23:49:21,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:21,989 INFO L93 Difference]: Finished difference Result 4936 states and 6594 transitions. [2020-10-26 23:49:21,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:49:21,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 401 [2020-10-26 23:49:21,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:22,010 INFO L225 Difference]: With dead ends: 4936 [2020-10-26 23:49:22,010 INFO L226 Difference]: Without dead ends: 2972 [2020-10-26 23:49:22,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:49:22,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-10-26 23:49:22,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2934. [2020-10-26 23:49:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2020-10-26 23:49:22,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 3709 transitions. [2020-10-26 23:49:22,111 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 3709 transitions. Word has length 401 [2020-10-26 23:49:22,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:22,112 INFO L481 AbstractCegarLoop]: Abstraction has 2934 states and 3709 transitions. [2020-10-26 23:49:22,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:22,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 3709 transitions. [2020-10-26 23:49:22,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-26 23:49:22,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:22,122 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:22,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:49:22,122 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:22,123 INFO L82 PathProgramCache]: Analyzing trace with hash -511360582, now seen corresponding path program 1 times [2020-10-26 23:49:22,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:22,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748603770] [2020-10-26 23:49:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:22,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:22,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:22,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:23,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:26,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:27,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:27,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-26 23:49:27,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:49:27,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 23:49:27,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:27,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:27,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:49:27,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-26 23:49:27,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:27,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:27,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:27,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:27,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:27,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:49:27,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:27,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:27,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:27,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:27,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:27,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:49:27,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:27,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 23:49:27,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:27,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:27,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:27,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:49:27,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:49:27,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:49:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:27,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:27,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:28,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:28,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:49:28,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:49:28,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 983 [2020-10-26 23:49:28,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:28,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:28,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:28,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:49:28,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:29,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:49:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:29,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:29,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:49:29,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:29,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:49:29,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:49:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:29,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 213 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-26 23:49:29,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748603770] [2020-10-26 23:49:29,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:29,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:29,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371800442] [2020-10-26 23:49:29,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:29,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:29,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:29,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:29,882 INFO L87 Difference]: Start difference. First operand 2934 states and 3709 transitions. Second operand 7 states. [2020-10-26 23:49:40,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:40,339 INFO L93 Difference]: Finished difference Result 5680 states and 7248 transitions. [2020-10-26 23:49:40,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:49:40,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 422 [2020-10-26 23:49:40,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:40,362 INFO L225 Difference]: With dead ends: 5680 [2020-10-26 23:49:40,363 INFO L226 Difference]: Without dead ends: 2976 [2020-10-26 23:49:40,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:49:40,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-10-26 23:49:40,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 2934. [2020-10-26 23:49:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2020-10-26 23:49:40,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 3687 transitions. [2020-10-26 23:49:40,463 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 3687 transitions. Word has length 422 [2020-10-26 23:49:40,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:40,464 INFO L481 AbstractCegarLoop]: Abstraction has 2934 states and 3687 transitions. [2020-10-26 23:49:40,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:40,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 3687 transitions. [2020-10-26 23:49:40,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-10-26 23:49:40,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:40,478 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:40,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:49:40,478 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:40,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:40,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1700580618, now seen corresponding path program 1 times [2020-10-26 23:49:40,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:40,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972538589] [2020-10-26 23:49:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:40,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:40,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:41,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:41,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:44,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:45,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:45,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 523 [2020-10-26 23:49:45,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:49:45,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-26 23:49:45,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-26 23:49:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 23:49:45,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:45,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:45,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:45,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:45,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:45,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:45,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:49:45,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:45,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:45,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:45,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:45,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:45,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:45,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:46,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:46,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-26 23:49:46,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:46,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-26 23:49:46,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:46,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:49:46,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:46,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-26 23:49:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:46,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:46,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:46,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:49:46,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:46,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-26 23:49:46,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:46,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:46,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:49:46,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:46,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-10-26 23:49:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:46,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:46,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:46,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:49:46,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:46,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:49:46,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:49:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:46,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 298 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-26 23:49:47,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972538589] [2020-10-26 23:49:47,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:47,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:47,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760051225] [2020-10-26 23:49:47,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:47,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:47,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:47,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:47,039 INFO L87 Difference]: Start difference. First operand 2934 states and 3687 transitions. Second operand 7 states. [2020-10-26 23:50:01,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:50:01,107 INFO L93 Difference]: Finished difference Result 8148 states and 10554 transitions. [2020-10-26 23:50:01,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:50:01,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 507 [2020-10-26 23:50:01,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:50:01,134 INFO L225 Difference]: With dead ends: 8148 [2020-10-26 23:50:01,135 INFO L226 Difference]: Without dead ends: 5211 [2020-10-26 23:50:01,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:50:01,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5211 states. [2020-10-26 23:50:01,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5211 to 5177. [2020-10-26 23:50:01,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5177 states. [2020-10-26 23:50:01,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 6236 transitions. [2020-10-26 23:50:01,279 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 6236 transitions. Word has length 507 [2020-10-26 23:50:01,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:01,279 INFO L481 AbstractCegarLoop]: Abstraction has 5177 states and 6236 transitions. [2020-10-26 23:50:01,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:50:01,280 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 6236 transitions. [2020-10-26 23:50:01,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2020-10-26 23:50:01,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:01,287 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:01,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:50:01,287 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:01,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:01,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1335741922, now seen corresponding path program 1 times [2020-10-26 23:50:01,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:01,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415136084] [2020-10-26 23:50:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:01,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:01,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:06,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:06,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 528 [2020-10-26 23:50:06,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:50:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 23:50:06,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:50:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:50:06,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:06,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:06,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:06,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:06,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:06,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:06,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:50:06,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:06,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:06,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:06,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:06,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:06,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:06,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:06,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:06,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:50:06,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:06,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-26 23:50:06,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:06,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:50:06,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:07,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:50:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:07,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:07,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:07,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:50:07,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:07,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 23:50:07,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:07,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:07,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:07,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:50:07,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:07,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:50:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:07,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:07,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:07,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:50:07,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:50:07,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:50:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 229 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-26 23:50:07,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415136084] [2020-10-26 23:50:07,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:50:07,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:50:07,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061670184] [2020-10-26 23:50:07,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:50:07,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:50:07,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:50:07,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:50:07,724 INFO L87 Difference]: Start difference. First operand 5177 states and 6236 transitions. Second operand 7 states. [2020-10-26 23:50:21,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:50:21,470 INFO L93 Difference]: Finished difference Result 12031 states and 14533 transitions. [2020-10-26 23:50:21,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:50:21,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 512 [2020-10-26 23:50:21,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:50:21,508 INFO L225 Difference]: With dead ends: 12031 [2020-10-26 23:50:21,508 INFO L226 Difference]: Without dead ends: 7167 [2020-10-26 23:50:21,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:50:21,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7167 states. [2020-10-26 23:50:21,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7167 to 6789. [2020-10-26 23:50:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6789 states. [2020-10-26 23:50:21,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6789 states to 6789 states and 8045 transitions. [2020-10-26 23:50:21,713 INFO L78 Accepts]: Start accepts. Automaton has 6789 states and 8045 transitions. Word has length 512 [2020-10-26 23:50:21,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:21,714 INFO L481 AbstractCegarLoop]: Abstraction has 6789 states and 8045 transitions. [2020-10-26 23:50:21,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:50:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand 6789 states and 8045 transitions. [2020-10-26 23:50:21,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-26 23:50:21,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:21,722 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:21,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:50:21,723 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:21,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1677632790, now seen corresponding path program 1 times [2020-10-26 23:50:21,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:21,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995575224] [2020-10-26 23:50:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:22,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:22,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:24,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:24,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 540 [2020-10-26 23:50:24,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:50:24,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2743 [2020-10-26 23:50:24,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:50:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:50:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:24,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:24,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:24,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:24,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:24,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:24,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:50:24,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:24,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:24,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:24,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:24,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:50:24,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:24,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:50:24,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:24,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:25,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:50:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:25,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:25,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:25,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:50:25,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:25,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:50:25,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:25,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:25,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:25,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:50:25,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:25,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:50:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:25,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:25,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:25,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:50:25,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:25,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:50:25,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:50:25,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:50:25,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995575224] [2020-10-26 23:50:25,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:50:25,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:50:25,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377423652] [2020-10-26 23:50:25,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:50:25,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:50:25,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:50:25,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:50:25,513 INFO L87 Difference]: Start difference. First operand 6789 states and 8045 transitions. Second operand 7 states. [2020-10-26 23:50:38,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:50:38,386 INFO L93 Difference]: Finished difference Result 13205 states and 16597 transitions. [2020-10-26 23:50:38,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:50:38,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 524 [2020-10-26 23:50:38,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:50:38,431 INFO L225 Difference]: With dead ends: 13205 [2020-10-26 23:50:38,431 INFO L226 Difference]: Without dead ends: 9525 [2020-10-26 23:50:38,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:50:38,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9525 states. [2020-10-26 23:50:38,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9525 to 9469. [2020-10-26 23:50:38,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9469 states. [2020-10-26 23:50:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9469 states to 9469 states and 11644 transitions. [2020-10-26 23:50:38,684 INFO L78 Accepts]: Start accepts. Automaton has 9469 states and 11644 transitions. Word has length 524 [2020-10-26 23:50:38,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:38,685 INFO L481 AbstractCegarLoop]: Abstraction has 9469 states and 11644 transitions. [2020-10-26 23:50:38,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:50:38,685 INFO L276 IsEmpty]: Start isEmpty. Operand 9469 states and 11644 transitions. [2020-10-26 23:50:38,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2020-10-26 23:50:38,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:38,694 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:38,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:50:38,695 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:38,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:38,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1807032914, now seen corresponding path program 1 times [2020-10-26 23:50:38,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:38,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369221996] [2020-10-26 23:50:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:38,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:39,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:39,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:40,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:40,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 559 [2020-10-26 23:50:40,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:50:40,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1754 [2020-10-26 23:50:40,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:50:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-26 23:50:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-26 23:50:40,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:40,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:40,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:40,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:40,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:40,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:40,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:50:40,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:40,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:40,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:41,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:41,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:41,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:50:41,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:41,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 23:50:41,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:41,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:41,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:41,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-26 23:50:41,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:41,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:50:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:41,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:41,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:41,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:50:41,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:41,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-26 23:50:41,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:50:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:50:41,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:41,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:50:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:41,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:41,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:42,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:42,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:50:42,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:50:42,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-26 23:50:42,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:42,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:42,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 23:50:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 296 proven. 123 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:50:42,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369221996] [2020-10-26 23:50:42,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:50:42,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:50:42,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555061293] [2020-10-26 23:50:42,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:50:42,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:50:42,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:50:42,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:50:42,611 INFO L87 Difference]: Start difference. First operand 9469 states and 11644 transitions. Second operand 11 states. [2020-10-26 23:50:46,434 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-26 23:50:49,595 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-10-26 23:50:49,881 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-26 23:50:56,225 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-26 23:51:10,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:10,149 INFO L93 Difference]: Finished difference Result 18295 states and 24975 transitions. [2020-10-26 23:51:10,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-26 23:51:10,152 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 543 [2020-10-26 23:51:10,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:10,204 INFO L225 Difference]: With dead ends: 18295 [2020-10-26 23:51:10,204 INFO L226 Difference]: Without dead ends: 11935 [2020-10-26 23:51:10,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2020-10-26 23:51:10,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11935 states. [2020-10-26 23:51:10,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11935 to 11090. [2020-10-26 23:51:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11090 states. [2020-10-26 23:51:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11090 states to 11090 states and 13506 transitions. [2020-10-26 23:51:10,533 INFO L78 Accepts]: Start accepts. Automaton has 11090 states and 13506 transitions. Word has length 543 [2020-10-26 23:51:10,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:10,534 INFO L481 AbstractCegarLoop]: Abstraction has 11090 states and 13506 transitions. [2020-10-26 23:51:10,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:51:10,534 INFO L276 IsEmpty]: Start isEmpty. Operand 11090 states and 13506 transitions. [2020-10-26 23:51:10,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2020-10-26 23:51:10,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:10,546 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:51:10,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:51:10,546 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:10,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:10,548 INFO L82 PathProgramCache]: Analyzing trace with hash 870763751, now seen corresponding path program 1 times [2020-10-26 23:51:10,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:10,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505742443] [2020-10-26 23:51:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:10,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:10,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:11,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:11,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:14,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:15,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:15,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 580 [2020-10-26 23:51:15,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:51:15,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-26 23:51:15,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:51:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:51:15,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-26 23:51:15,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:15,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:15,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:15,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:15,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:15,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:51:15,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:15,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:51:15,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:16,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:16,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:16,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:16,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-26 23:51:16,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:16,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-26 23:51:16,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:16,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:51:16,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:16,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-26 23:51:16,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:16,984 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-26 23:51:17,141 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-26 23:51:17,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-26 23:51:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:17,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:17,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:18,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:18,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:51:18,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:18,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-26 23:51:18,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:51:18,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:18,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-26 23:51:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:18,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:18,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:18,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:51:18,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:18,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:51:18,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:51:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:18,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 122 proven. 348 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 23:51:20,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505742443] [2020-10-26 23:51:20,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:20,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:51:20,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242846797] [2020-10-26 23:51:20,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:51:20,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:20,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:51:20,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:51:20,212 INFO L87 Difference]: Start difference. First operand 11090 states and 13506 transitions. Second operand 10 states. [2020-10-26 23:51:20,480 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-26 23:51:22,512 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-26 23:51:26,049 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-26 23:51:27,347 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-26 23:51:28,397 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-26 23:51:38,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:38,308 INFO L93 Difference]: Finished difference Result 20775 states and 25547 transitions. [2020-10-26 23:51:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 23:51:38,311 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 564 [2020-10-26 23:51:38,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:38,349 INFO L225 Difference]: With dead ends: 20775 [2020-10-26 23:51:38,349 INFO L226 Difference]: Without dead ends: 11189 [2020-10-26 23:51:38,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:51:38,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11189 states. [2020-10-26 23:51:38,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11189 to 11098. [2020-10-26 23:51:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11098 states. [2020-10-26 23:51:38,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11098 states to 11098 states and 13512 transitions. [2020-10-26 23:51:38,628 INFO L78 Accepts]: Start accepts. Automaton has 11098 states and 13512 transitions. Word has length 564 [2020-10-26 23:51:38,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:38,628 INFO L481 AbstractCegarLoop]: Abstraction has 11098 states and 13512 transitions. [2020-10-26 23:51:38,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:51:38,629 INFO L276 IsEmpty]: Start isEmpty. Operand 11098 states and 13512 transitions. [2020-10-26 23:51:38,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2020-10-26 23:51:38,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:38,639 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:51:38,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:51:38,639 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:38,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:38,640 INFO L82 PathProgramCache]: Analyzing trace with hash 118860706, now seen corresponding path program 1 times [2020-10-26 23:51:38,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:38,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607319043] [2020-10-26 23:51:38,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:39,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:42,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:42,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 617 [2020-10-26 23:51:42,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:42,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3342 [2020-10-26 23:51:42,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:42,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:42,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 486 [2020-10-26 23:51:42,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:51:42,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:42,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:42,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:42,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:42,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:42,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:42,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:51:42,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:42,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:42,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:42,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:42,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:42,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:51:42,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:42,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:51:42,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:42,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:42,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:51:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:42,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:42,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:42,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:51:42,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:42,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 23:51:42,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-26 23:51:42,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:42,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-10-26 23:51:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:42,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:42,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:42,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:51:42,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:42,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:51:42,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:42,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:42,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:42,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:51:42,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-26 23:51:43,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607319043] [2020-10-26 23:51:43,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:43,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:51:43,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896454704] [2020-10-26 23:51:43,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:51:43,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:43,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:51:43,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:51:43,214 INFO L87 Difference]: Start difference. First operand 11098 states and 13512 transitions. Second operand 7 states. [2020-10-26 23:51:56,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:56,761 INFO L93 Difference]: Finished difference Result 24466 states and 30445 transitions. [2020-10-26 23:51:56,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:51:56,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 601 [2020-10-26 23:51:56,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:56,813 INFO L225 Difference]: With dead ends: 24466 [2020-10-26 23:51:56,813 INFO L226 Difference]: Without dead ends: 13681 [2020-10-26 23:51:56,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:51:56,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13681 states. [2020-10-26 23:51:57,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13681 to 13643. [2020-10-26 23:51:57,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13643 states. [2020-10-26 23:51:57,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13643 states to 13643 states and 16897 transitions. [2020-10-26 23:51:57,163 INFO L78 Accepts]: Start accepts. Automaton has 13643 states and 16897 transitions. Word has length 601 [2020-10-26 23:51:57,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:57,165 INFO L481 AbstractCegarLoop]: Abstraction has 13643 states and 16897 transitions. [2020-10-26 23:51:57,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:51:57,165 INFO L276 IsEmpty]: Start isEmpty. Operand 13643 states and 16897 transitions. [2020-10-26 23:51:57,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2020-10-26 23:51:57,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:57,177 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:51:57,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:51:57,177 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:57,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:57,178 INFO L82 PathProgramCache]: Analyzing trace with hash -522254230, now seen corresponding path program 1 times [2020-10-26 23:51:57,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:57,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519568235] [2020-10-26 23:51:57,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat