/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:04:14,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:04:14,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:04:14,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:04:14,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:04:14,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:04:14,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:04:14,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:04:14,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:04:14,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:04:14,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:04:14,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:04:14,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:04:14,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:04:14,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:04:14,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:04:14,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:04:14,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:04:14,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:04:14,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:04:14,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:04:14,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:04:14,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:04:14,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:04:14,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:04:14,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:04:14,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:04:14,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:04:14,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:04:14,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:04:14,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:04:14,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:04:14,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:04:14,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:04:14,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:04:14,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:04:14,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:04:14,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:04:14,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:04:14,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:04:14,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:04:14,336 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 [2020-10-29 05:04:14,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:04:14,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:04:14,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:04:14,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:04:14,392 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:04:14,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:04:14,392 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:04:14,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:04:14,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:04:14,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:04:14,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:04:14,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:04:14,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:04:14,395 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:04:14,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:04:14,395 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:04:14,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:04:14,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:04:14,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:04:14,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:04:14,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:04:14,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:04:14,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:04:14,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:04:14,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:04:14,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:04:14,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:04:14,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:04:14,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:04:14,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:04:14,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:04:14,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:04:14,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:04:14,860 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:04:14,861 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:04:14,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label07.c [2020-10-29 05:04:14,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/817574772/dd6c58581f034d3399b7cba9f536b5cf/FLAG6a9bcd31f [2020-10-29 05:04:15,945 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:04:15,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label07.c [2020-10-29 05:04:15,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/817574772/dd6c58581f034d3399b7cba9f536b5cf/FLAG6a9bcd31f [2020-10-29 05:04:16,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/817574772/dd6c58581f034d3399b7cba9f536b5cf [2020-10-29 05:04:16,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:04:16,376 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:04:16,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:04:16,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:04:16,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:04:16,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:04:16" (1/1) ... [2020-10-29 05:04:16,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1098b93e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:04:16, skipping insertion in model container [2020-10-29 05:04:16,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:04:16" (1/1) ... [2020-10-29 05:04:16,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:04:16,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:04:18,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:04:18,185 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:04:18,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:04:18,884 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:04:18,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:04:18 WrapperNode [2020-10-29 05:04:18,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:04:18,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:04:18,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:04:18,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:04:18,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:04:18" (1/1) ... [2020-10-29 05:04:18,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:04:18" (1/1) ... [2020-10-29 05:04:18,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:04:18" (1/1) ... [2020-10-29 05:04:18,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:04:18" (1/1) ... [2020-10-29 05:04:19,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:04:18" (1/1) ... [2020-10-29 05:04:19,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:04:18" (1/1) ... [2020-10-29 05:04:19,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:04:18" (1/1) ... [2020-10-29 05:04:19,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:04:19,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:04:19,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:04:19,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:04:19,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:04:18" (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 [2020-10-29 05:04:19,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:04:19,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:04:19,275 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:04:19,275 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:04:19,275 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:04:19,276 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:04:19,276 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:04:19,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:04:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:04:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:04:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:04:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:04:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:04:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:04:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:04:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:04:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:04:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:04:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:04:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:04:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:04:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:04:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:04:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:04:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:04:25,010 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:04:25,010 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:04:25,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:04:25 BoogieIcfgContainer [2020-10-29 05:04:25,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:04:25,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:04:25,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:04:25,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:04:25,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:04:16" (1/3) ... [2020-10-29 05:04:25,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754c5b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:04:25, skipping insertion in model container [2020-10-29 05:04:25,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:04:18" (2/3) ... [2020-10-29 05:04:25,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754c5b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:04:25, skipping insertion in model container [2020-10-29 05:04:25,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:04:25" (3/3) ... [2020-10-29 05:04:25,030 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label07.c [2020-10-29 05:04:25,044 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:04:25,051 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:04:25,067 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:04:25,120 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:04:25,120 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:04:25,120 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:04:25,120 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:04:25,121 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:04:25,121 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:04:25,121 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:04:25,121 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:04:25,170 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:04:25,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2020-10-29 05:04:25,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:04:25,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:04:25,234 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:04:25,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:04:25,242 INFO L82 PathProgramCache]: Analyzing trace with hash -329586596, now seen corresponding path program 1 times [2020-10-29 05:04:25,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:04:25,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979388191] [2020-10-29 05:04:25,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:04:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:26,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:31,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:31,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:31,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 818 [2020-10-29 05:04:31,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:04:31,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5297 [2020-10-29 05:04:31,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:31,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:04:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:04:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 809 [2020-10-29 05:04:31,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 05:04:32,509 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:04:32,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:04:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:32,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:32,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:04:32,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:32,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 05:04:32,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:32,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:04:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:04:32,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:04:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:04:33,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979388191] [2020-10-29 05:04:33,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:04:33,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:04:33,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677671684] [2020-10-29 05:04:33,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:04:33,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:04:33,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:04:33,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:04:33,471 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-29 05:04:33,775 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:04:44,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:04:44,916 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-29 05:04:44,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:04:44,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 802 [2020-10-29 05:04:44,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:04:44,975 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:04:44,975 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:04:44,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:04:45,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:04:45,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:04:45,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:04:45,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2730 transitions. [2020-10-29 05:04:45,158 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2730 transitions. Word has length 802 [2020-10-29 05:04:45,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:04:45,163 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 2730 transitions. [2020-10-29 05:04:45,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:04:45,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2730 transitions. [2020-10-29 05:04:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2020-10-29 05:04:45,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:04:45,199 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:04:45,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:04:45,200 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:04:45,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:04:45,202 INFO L82 PathProgramCache]: Analyzing trace with hash -591762498, now seen corresponding path program 1 times [2020-10-29 05:04:45,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:04:45,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634122231] [2020-10-29 05:04:45,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:04:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:45,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:46,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:50,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:50,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:50,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 828 [2020-10-29 05:04:50,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:04:50,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-29 05:04:50,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:50,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:50,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:04:50,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:04:50,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-29 05:04:50,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:04:51,435 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:04:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:04:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:51,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:51,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:51,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:04:51,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:51,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:04:51,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:51,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:51,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:51,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:51,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:51,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:04:51,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:04:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:51,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:51,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:51,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:04:51,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:51,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:04:51,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:51,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:51,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:04:51,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:51,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:04:51,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:04:55,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634122231] [2020-10-29 05:04:55,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:04:55,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:04:55,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130924978] [2020-10-29 05:04:55,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:04:55,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:04:55,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:04:55,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:04:55,236 INFO L87 Difference]: Start difference. First operand 1690 states and 2730 transitions. Second operand 5 states. [2020-10-29 05:04:55,518 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:05:07,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:05:07,493 INFO L93 Difference]: Finished difference Result 4173 states and 7026 transitions. [2020-10-29 05:05:07,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:05:07,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 810 [2020-10-29 05:05:07,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:05:07,505 INFO L225 Difference]: With dead ends: 4173 [2020-10-29 05:05:07,506 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:05:07,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:05:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:05:07,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:05:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:05:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2047 transitions. [2020-10-29 05:05:07,584 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2047 transitions. Word has length 810 [2020-10-29 05:05:07,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:05:07,585 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 2047 transitions. [2020-10-29 05:05:07,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:05:07,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2047 transitions. [2020-10-29 05:05:07,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2020-10-29 05:05:07,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:05:07,601 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:05:07,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:05:07,601 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:05:07,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:05:07,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1424489365, now seen corresponding path program 1 times [2020-10-29 05:05:07,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:05:07,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922035738] [2020-10-29 05:05:07,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:05:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:07,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:08,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:12,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:12,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 835 [2020-10-29 05:05:12,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:05:12,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-29 05:05:12,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:12,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:12,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:05:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:05:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 806 [2020-10-29 05:05:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:05:13,379 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:05:13,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:05:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:13,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:13,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:05:13,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:13,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:05:13,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:13,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:05:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:05:13,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:13,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:05:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:13,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:13,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:13,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:05:13,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:13,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:05:13,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:13,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:13,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:05:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:05:13,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:05:14,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:05:14,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922035738] [2020-10-29 05:05:14,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:05:14,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:05:14,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130245835] [2020-10-29 05:05:14,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:05:14,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:05:14,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:05:14,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:05:14,604 INFO L87 Difference]: Start difference. First operand 1690 states and 2047 transitions. Second operand 5 states. [2020-10-29 05:05:14,874 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:05:22,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:05:22,544 INFO L93 Difference]: Finished difference Result 5077 states and 6209 transitions. [2020-10-29 05:05:22,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:05:22,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 817 [2020-10-29 05:05:22,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:05:22,565 INFO L225 Difference]: With dead ends: 5077 [2020-10-29 05:05:22,565 INFO L226 Difference]: Without dead ends: 3393 [2020-10-29 05:05:22,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:05:22,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2020-10-29 05:05:22,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 3389. [2020-10-29 05:05:22,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3389 states. [2020-10-29 05:05:22,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 3887 transitions. [2020-10-29 05:05:22,667 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 3887 transitions. Word has length 817 [2020-10-29 05:05:22,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:05:22,670 INFO L481 AbstractCegarLoop]: Abstraction has 3389 states and 3887 transitions. [2020-10-29 05:05:22,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:05:22,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 3887 transitions. [2020-10-29 05:05:22,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2020-10-29 05:05:22,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:05:22,705 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:05:22,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:05:22,705 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:05:22,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:05:22,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1610332398, now seen corresponding path program 1 times [2020-10-29 05:05:22,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:05:22,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385432616] [2020-10-29 05:05:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:05:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:22,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:23,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:27,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:27,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 868 [2020-10-29 05:05:27,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:05:27,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-29 05:05:27,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:27,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:05:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-29 05:05:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 621 [2020-10-29 05:05:27,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:29,975 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-29 05:05:30,115 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-29 05:05:30,385 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-10-29 05:05:30,546 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-29 05:05:30,901 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-29 05:05:31,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:05:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:31,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:31,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:31,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:05:31,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:31,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:05:31,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:31,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:05:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:05:31,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:31,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:05:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:31,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:31,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:31,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 05:05:31,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 05:05:31,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:31,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:05:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 05:05:31,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:05:37,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385432616] [2020-10-29 05:05:37,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:05:37,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:05:37,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509871156] [2020-10-29 05:05:37,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:05:37,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:05:37,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:05:37,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:05:37,289 INFO L87 Difference]: Start difference. First operand 3389 states and 3887 transitions. Second operand 17 states. [2020-10-29 05:05:37,823 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 05:05:38,107 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-29 05:05:38,830 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-29 05:05:42,523 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-29 05:05:42,809 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 05:05:44,293 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-29 05:05:45,465 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 05:05:47,560 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 05:05:47,809 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-29 05:05:48,399 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-29 05:05:50,695 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:05:52,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:05:52,140 INFO L93 Difference]: Finished difference Result 7390 states and 8613 transitions. [2020-10-29 05:05:52,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:05:52,148 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 850 [2020-10-29 05:05:52,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:05:52,164 INFO L225 Difference]: With dead ends: 7390 [2020-10-29 05:05:52,165 INFO L226 Difference]: Without dead ends: 3734 [2020-10-29 05:05:52,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:05:52,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2020-10-29 05:05:52,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3730. [2020-10-29 05:05:52,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3730 states. [2020-10-29 05:05:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 4231 transitions. [2020-10-29 05:05:52,281 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 4231 transitions. Word has length 850 [2020-10-29 05:05:52,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:05:52,283 INFO L481 AbstractCegarLoop]: Abstraction has 3730 states and 4231 transitions. [2020-10-29 05:05:52,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:05:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 4231 transitions. [2020-10-29 05:05:52,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2020-10-29 05:05:52,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:05:52,301 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:05:52,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:05:52,302 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:05:52,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:05:52,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1791685171, now seen corresponding path program 1 times [2020-10-29 05:05:52,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:05:52,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179140991] [2020-10-29 05:05:52,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:05:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:52,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:52,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:55,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:56,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:57,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:57,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 895 [2020-10-29 05:05:57,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:05:57,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 05:05:57,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:57,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:57,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:05:57,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 05:05:57,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 775 [2020-10-29 05:05:57,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:58,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:05:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:58,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:58,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:58,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:05:58,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:58,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:05:58,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:58,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:58,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:05:58,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:58,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:05:58,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:59,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:05:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:59,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:59,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:59,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:05:59,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:59,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:05:59,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:59,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:05:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:05:59,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:59,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:05:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:59,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:59,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 05:05:59,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:59,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 05:05:59,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:59,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:59,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:05:59,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:59,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 05:05:59,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 05:06:04,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179140991] [2020-10-29 05:06:04,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:06:04,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:06:04,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024067749] [2020-10-29 05:06:04,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:06:04,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:06:04,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:06:04,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:06:04,791 INFO L87 Difference]: Start difference. First operand 3730 states and 4231 transitions. Second operand 5 states. [2020-10-29 05:06:05,392 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 05:06:13,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:06:13,107 INFO L93 Difference]: Finished difference Result 8224 states and 9510 transitions. [2020-10-29 05:06:13,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:06:13,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 875 [2020-10-29 05:06:13,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:06:13,132 INFO L225 Difference]: With dead ends: 8224 [2020-10-29 05:06:13,132 INFO L226 Difference]: Without dead ends: 3734 [2020-10-29 05:06:13,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:06:13,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2020-10-29 05:06:13,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3730. [2020-10-29 05:06:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3730 states. [2020-10-29 05:06:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 4229 transitions. [2020-10-29 05:06:13,232 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 4229 transitions. Word has length 875 [2020-10-29 05:06:13,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:06:13,233 INFO L481 AbstractCegarLoop]: Abstraction has 3730 states and 4229 transitions. [2020-10-29 05:06:13,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:06:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 4229 transitions. [2020-10-29 05:06:13,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2020-10-29 05:06:13,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:06:13,256 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:06:13,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:06:13,257 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:06:13,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:06:13,258 INFO L82 PathProgramCache]: Analyzing trace with hash -134382410, now seen corresponding path program 1 times [2020-10-29 05:06:13,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:06:13,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638574893] [2020-10-29 05:06:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:06:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:13,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:14,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:16,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:18,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:18,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 928 [2020-10-29 05:06:18,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:06:18,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-29 05:06:18,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:18,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:06:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-29 05:06:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 806 [2020-10-29 05:06:18,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:18,903 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:06:18,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:06:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:18,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:18,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:18,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:06:18,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:18,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:06:18,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:18,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:06:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:06:18,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:18,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:06:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:19,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:19,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 05:06:19,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:19,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 05:06:19,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:19,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:19,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:06:19,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:19,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 05:06:19,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 104 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:06:19,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638574893] [2020-10-29 05:06:19,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:06:19,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:06:19,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710729659] [2020-10-29 05:06:19,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:06:19,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:06:19,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:06:19,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:06:19,925 INFO L87 Difference]: Start difference. First operand 3730 states and 4229 transitions. Second operand 5 states. [2020-10-29 05:06:20,471 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:06:28,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:06:28,289 INFO L93 Difference]: Finished difference Result 9148 states and 10613 transitions. [2020-10-29 05:06:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:06:28,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 910 [2020-10-29 05:06:28,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:06:28,320 INFO L225 Difference]: With dead ends: 9148 [2020-10-29 05:06:28,321 INFO L226 Difference]: Without dead ends: 5424 [2020-10-29 05:06:28,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:06:28,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5424 states. [2020-10-29 05:06:28,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5424 to 5420. [2020-10-29 05:06:28,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5420 states. [2020-10-29 05:06:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5420 states to 5420 states and 6125 transitions. [2020-10-29 05:06:28,457 INFO L78 Accepts]: Start accepts. Automaton has 5420 states and 6125 transitions. Word has length 910 [2020-10-29 05:06:28,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:06:28,459 INFO L481 AbstractCegarLoop]: Abstraction has 5420 states and 6125 transitions. [2020-10-29 05:06:28,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:06:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5420 states and 6125 transitions. [2020-10-29 05:06:28,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2020-10-29 05:06:28,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:06:28,529 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:06:28,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:06:28,530 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:06:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:06:28,531 INFO L82 PathProgramCache]: Analyzing trace with hash -545019023, now seen corresponding path program 1 times [2020-10-29 05:06:28,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:06:28,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389431037] [2020-10-29 05:06:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:06:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:28,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:31,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:33,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:33,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 933 [2020-10-29 05:06:33,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:06:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-29 05:06:33,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:33,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:06:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-29 05:06:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 806 [2020-10-29 05:06:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:34,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:06:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:34,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:34,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:34,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:06:34,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:34,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:06:34,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:34,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:06:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:06:34,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:34,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:06:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:34,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:34,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:34,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 05:06:34,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:34,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 05:06:34,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:34,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:06:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 05:06:34,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 109 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:06:34,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389431037] [2020-10-29 05:06:34,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:06:34,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:06:34,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255657327] [2020-10-29 05:06:34,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:06:34,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:06:34,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:06:34,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:06:34,905 INFO L87 Difference]: Start difference. First operand 5420 states and 6125 transitions. Second operand 5 states. [2020-10-29 05:06:43,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:06:43,508 INFO L93 Difference]: Finished difference Result 13370 states and 15400 transitions. [2020-10-29 05:06:43,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:06:43,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 915 [2020-10-29 05:06:43,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:06:43,548 INFO L225 Difference]: With dead ends: 13370 [2020-10-29 05:06:43,548 INFO L226 Difference]: Without dead ends: 7956 [2020-10-29 05:06:43,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:06:43,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7956 states. [2020-10-29 05:06:43,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7956 to 7952. [2020-10-29 05:06:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7952 states. [2020-10-29 05:06:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7952 states to 7952 states and 8963 transitions. [2020-10-29 05:06:43,768 INFO L78 Accepts]: Start accepts. Automaton has 7952 states and 8963 transitions. Word has length 915 [2020-10-29 05:06:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:06:43,770 INFO L481 AbstractCegarLoop]: Abstraction has 7952 states and 8963 transitions. [2020-10-29 05:06:43,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:06:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 7952 states and 8963 transitions. [2020-10-29 05:06:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2020-10-29 05:06:43,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:06:43,803 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:06:43,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:06:43,803 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:06:43,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:06:43,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1881418929, now seen corresponding path program 1 times [2020-10-29 05:06:43,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:06:43,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158579348] [2020-10-29 05:06:43,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:06:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:43,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:45,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:47,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:48,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:48,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 951 [2020-10-29 05:06:48,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:06:48,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 05:06:48,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:48,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:06:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-29 05:06:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 829 [2020-10-29 05:06:48,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:49,329 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:06:49,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:06:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:49,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:49,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:49,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:06:49,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:49,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:06:49,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:49,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:06:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:06:49,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:49,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:06:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:49,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:49,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:49,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 05:06:49,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:49,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 05:06:49,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:49,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:06:49,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:49,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 05:06:49,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:49,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-29 05:06:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:49,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:49,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:49,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:49,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:06:49,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:06:49,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 05:06:49,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:49,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:06:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:06:49,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 05:06:50,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158579348] [2020-10-29 05:06:50,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:06:50,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:06:50,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611618962] [2020-10-29 05:06:50,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:06:50,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:06:50,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:06:50,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:06:50,391 INFO L87 Difference]: Start difference. First operand 7952 states and 8963 transitions. Second operand 6 states. [2020-10-29 05:06:50,523 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:06:58,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:06:58,454 INFO L93 Difference]: Finished difference Result 23507 states and 26957 transitions. [2020-10-29 05:06:58,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:06:58,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 931 [2020-10-29 05:06:58,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:06:58,506 INFO L225 Difference]: With dead ends: 23507 [2020-10-29 05:06:58,506 INFO L226 Difference]: Without dead ends: 15561 [2020-10-29 05:06:58,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:06:58,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15561 states. [2020-10-29 05:06:58,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15561 to 15557. [2020-10-29 05:06:58,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15557 states. [2020-10-29 05:06:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15557 states to 15557 states and 17900 transitions. [2020-10-29 05:06:58,887 INFO L78 Accepts]: Start accepts. Automaton has 15557 states and 17900 transitions. Word has length 931 [2020-10-29 05:06:58,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:06:58,888 INFO L481 AbstractCegarLoop]: Abstraction has 15557 states and 17900 transitions. [2020-10-29 05:06:58,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:06:58,889 INFO L276 IsEmpty]: Start isEmpty. Operand 15557 states and 17900 transitions. [2020-10-29 05:06:58,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1022 [2020-10-29 05:06:58,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:06:58,943 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:06:58,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:06:58,943 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:06:58,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:06:58,944 INFO L82 PathProgramCache]: Analyzing trace with hash -257469651, now seen corresponding path program 1 times [2020-10-29 05:06:58,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:06:58,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619319222] [2020-10-29 05:06:58,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:06:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:59,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:59,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:59,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:02,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:04,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:04,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1043 [2020-10-29 05:07:04,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:07:04,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 05:07:04,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:04,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:04,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:07:04,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:07:04,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 05:07:04,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:04,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:07:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:04,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:04,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:04,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:07:04,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:04,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:07:04,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:04,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:07:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:07:04,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:04,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:07:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:04,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:04,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:04,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 05:07:04,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 05:07:04,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:04,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:07:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:07:04,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 05:07:04,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:04,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-29 05:07:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:04,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:04,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:04,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 05:07:04,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:04,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:07:04,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:04,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:04,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:07:04,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 05:07:04,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:07:04,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:04,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-29 05:07:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:04,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:04,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:04,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 05:07:04,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:04,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:07:04,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:04,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:04,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:07:04,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-29 05:07:04,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:07:04,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 210 proven. 101 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-29 05:07:05,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619319222] [2020-10-29 05:07:05,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:07:05,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:07:05,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150665853] [2020-10-29 05:07:05,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:07:05,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:07:05,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:07:05,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:07:05,154 INFO L87 Difference]: Start difference. First operand 15557 states and 17900 transitions. Second operand 7 states. [2020-10-29 05:07:05,286 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:07:06,518 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:07:14,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:07:14,171 INFO L93 Difference]: Finished difference Result 31365 states and 36431 transitions. [2020-10-29 05:07:14,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:07:14,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1021 [2020-10-29 05:07:14,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:07:14,221 INFO L225 Difference]: With dead ends: 31365 [2020-10-29 05:07:14,221 INFO L226 Difference]: Without dead ends: 15814 [2020-10-29 05:07:14,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:07:14,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15814 states. [2020-10-29 05:07:14,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15814 to 15778. [2020-10-29 05:07:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15778 states. [2020-10-29 05:07:14,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15778 states to 15778 states and 17365 transitions. [2020-10-29 05:07:14,614 INFO L78 Accepts]: Start accepts. Automaton has 15778 states and 17365 transitions. Word has length 1021 [2020-10-29 05:07:14,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:07:14,615 INFO L481 AbstractCegarLoop]: Abstraction has 15778 states and 17365 transitions. [2020-10-29 05:07:14,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:07:14,615 INFO L276 IsEmpty]: Start isEmpty. Operand 15778 states and 17365 transitions. [2020-10-29 05:07:14,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2020-10-29 05:07:14,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:07:14,663 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:07:14,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:07:14,663 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:07:14,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:07:14,664 INFO L82 PathProgramCache]: Analyzing trace with hash -709174188, now seen corresponding path program 1 times [2020-10-29 05:07:14,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:07:14,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457773989] [2020-10-29 05:07:14,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:07:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:14,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:14,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:15,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:17,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:19,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:19,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1060 [2020-10-29 05:07:19,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:07:19,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5248 [2020-10-29 05:07:19,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:19,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:07:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:07:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-29 05:07:19,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:20,228 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:07:20,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:07:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:20,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:20,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:20,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:07:20,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:20,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:07:20,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:20,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:20,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:07:20,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:20,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:07:20,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:20,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:07:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:20,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:20,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:20,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:07:20,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:20,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:07:20,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:20,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:20,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:07:20,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:20,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:07:20,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:20,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:07:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:20,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:20,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:20,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:20,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 05:07:20,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:07:20,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 05:07:20,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:20,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:20,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:07:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:07:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 05:07:20,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:20,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 05:07:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:20,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:20,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:20,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:20,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 05:07:20,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:07:20,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 05:07:20,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:20,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:07:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 05:07:20,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:20,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-29 05:07:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:20,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:20,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:20,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 05:07:20,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:20,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 05:07:20,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:20,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:07:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:07:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 05:07:20,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 286 proven. 46 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-29 05:07:21,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457773989] [2020-10-29 05:07:21,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:07:21,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:07:21,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094766050] [2020-10-29 05:07:21,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:07:21,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:07:21,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:07:21,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:07:21,840 INFO L87 Difference]: Start difference. First operand 15778 states and 17365 transitions. Second operand 7 states. [2020-10-29 05:07:22,124 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:07:22,300 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:07:38,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:07:38,180 INFO L93 Difference]: Finished difference Result 55625 states and 62675 transitions. [2020-10-29 05:07:38,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:07:38,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1036 [2020-10-29 05:07:38,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:07:38,303 INFO L225 Difference]: With dead ends: 55625 [2020-10-29 05:07:38,304 INFO L226 Difference]: Without dead ends: 39853 [2020-10-29 05:07:38,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:07:38,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39853 states. [2020-10-29 05:07:39,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39853 to 36073. [2020-10-29 05:07:39,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36073 states. [2020-10-29 05:07:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36073 states to 36073 states and 39577 transitions. [2020-10-29 05:07:39,201 INFO L78 Accepts]: Start accepts. Automaton has 36073 states and 39577 transitions. Word has length 1036 [2020-10-29 05:07:39,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:07:39,202 INFO L481 AbstractCegarLoop]: Abstraction has 36073 states and 39577 transitions. [2020-10-29 05:07:39,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:07:39,202 INFO L276 IsEmpty]: Start isEmpty. Operand 36073 states and 39577 transitions. [2020-10-29 05:07:39,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1561 [2020-10-29 05:07:39,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:07:39,303 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:07:39,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:07:39,303 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:07:39,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:07:39,304 INFO L82 PathProgramCache]: Analyzing trace with hash -108728094, now seen corresponding path program 1 times [2020-10-29 05:07:39,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:07:39,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982706791] [2020-10-29 05:07:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:07:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:39,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:39,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:39,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:40,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:44,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:44,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1588 [2020-10-29 05:07:44,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:07:44,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 05:07:44,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:44,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:44,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:07:44,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-29 05:07:44,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 426 [2020-10-29 05:07:44,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:44,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:07:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:44,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:44,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:44,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:07:44,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:44,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:07:44,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:44,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:44,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:07:44,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:44,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:07:44,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:44,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:07:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:44,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:44,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:44,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:07:44,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:44,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:07:44,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:44,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:07:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:07:44,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:44,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:07:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:45,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:45,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 05:07:45,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:45,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 05:07:45,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:45,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:07:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:07:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:45,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 05:07:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:45,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:45,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:45,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:07:45,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:45,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:07:45,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:45,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:07:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:07:45,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:45,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-29 05:07:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:45,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:45,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:45,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:07:45,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:45,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 05:07:45,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:45,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:07:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:45,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 05:07:45,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:45,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-10-29 05:07:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:45,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:46,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:46,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-29 05:07:46,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:46,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-10-29 05:07:46,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:46,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:07:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:07:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 427 [2020-10-29 05:07:46,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:46,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 05:07:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:46,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:46,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:46,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-29 05:07:46,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 05:07:46,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:46,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:07:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:07:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-29 05:07:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0