/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_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:03:54,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:03:54,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:03:54,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:03:54,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:03:54,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:03:54,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:03:54,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:03:54,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:03:54,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:03:54,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:03:54,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:03:54,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:03:54,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:03:54,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:03:54,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:03:54,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:03:54,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:03:54,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:03:54,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:03:54,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:03:54,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:03:54,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:03:54,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:03:54,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:03:54,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:03:54,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:03:54,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:03:54,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:03:54,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:03:54,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:03:54,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:03:54,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:03:54,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:03:54,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:03:54,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:03:54,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:03:54,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:03:54,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:03:54,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:03:54,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:03:54,272 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 05:03:54,300 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:03:54,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:03:54,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:03:54,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:03:54,303 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:03:54,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:03:54,303 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:03:54,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:03:54,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:03:54,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:03:54,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:03:54,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:03:54,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:03:54,305 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:03:54,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:03:54,305 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:03:54,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:03:54,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:03:54,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:03:54,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:03:54,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:03:54,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:03:54,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:03:54,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:03:54,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:03:54,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:03:54,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:03:54,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:03:54,308 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:03:54,308 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:03:54,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:03:54,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:03:54,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:03:54,712 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:03:54,713 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:03:54,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label06.c [2020-10-29 05:03:54,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02f873924/10dbefa066fa45f08bf8fee779b125b1/FLAG78dc10627 [2020-10-29 05:03:55,965 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:03:55,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label06.c [2020-10-29 05:03:55,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02f873924/10dbefa066fa45f08bf8fee779b125b1/FLAG78dc10627 [2020-10-29 05:03:56,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02f873924/10dbefa066fa45f08bf8fee779b125b1 [2020-10-29 05:03:56,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:03:56,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:03:56,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:03:56,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:03:56,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:03:56,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:03:56" (1/1) ... [2020-10-29 05:03:56,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60015b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:56, skipping insertion in model container [2020-10-29 05:03:56,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:03:56" (1/1) ... [2020-10-29 05:03:56,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:03:56,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:03:58,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:03:58,020 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:03:58,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:03:58,830 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:03:58,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:58 WrapperNode [2020-10-29 05:03:58,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:03:58,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:03:58,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:03:58,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:03:58,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:58" (1/1) ... [2020-10-29 05:03:58,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:58" (1/1) ... [2020-10-29 05:03:58,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:58" (1/1) ... [2020-10-29 05:03:58,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:58" (1/1) ... [2020-10-29 05:03:59,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:58" (1/1) ... [2020-10-29 05:03:59,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:58" (1/1) ... [2020-10-29 05:03:59,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:58" (1/1) ... [2020-10-29 05:03:59,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:03:59,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:03:59,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:03:59,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:03:59,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:58" (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 05:03:59,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:03:59,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:03:59,264 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:03:59,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:03:59,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:03:59,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:03:59,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:03:59,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:03:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:03:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:03:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:03:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:03:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:03:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:03:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:03:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:03:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:03:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:03:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:03:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:03:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:03:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:03:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:03:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:03:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:04:04,000 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:04:04,003 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:04:04,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:04:04 BoogieIcfgContainer [2020-10-29 05:04:04,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:04:04,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:04:04,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:04:04,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:04:04,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:03:56" (1/3) ... [2020-10-29 05:04:04,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b9d786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:04:04, skipping insertion in model container [2020-10-29 05:04:04,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:58" (2/3) ... [2020-10-29 05:04:04,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b9d786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:04:04, skipping insertion in model container [2020-10-29 05:04:04,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:04:04" (3/3) ... [2020-10-29 05:04:04,025 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label06.c [2020-10-29 05:04:04,037 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:04:04,043 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:04:04,054 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:04:04,087 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:04:04,088 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:04:04,088 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:04:04,088 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:04:04,088 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:04:04,088 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:04:04,088 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:04:04,088 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:04:04,127 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:04:04,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2020-10-29 05:04:04,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:04:04,179 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] [2020-10-29 05:04:04,179 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:04:04,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:04:04,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1922788076, now seen corresponding path program 1 times [2020-10-29 05:04:04,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:04:04,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49745006] [2020-10-29 05:04:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:04:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:05,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:09,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:10,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:10,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 790 [2020-10-29 05:04:10,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:04:10,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-29 05:04:10,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:10,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:04:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:04:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 781 [2020-10-29 05:04:10,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 05:04:10,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:04:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:10,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:10,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:10,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:04:10,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:10,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 05:04:10,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:10,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:10,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:04:10,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:10,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:04:10,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:04:11,697 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 05:04:11,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49745006] [2020-10-29 05:04:11,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:04:11,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:04:11,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256354961] [2020-10-29 05:04:11,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:04:11,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:04:11,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:04:11,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:04:11,728 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-29 05:04:21,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:04:21,511 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-29 05:04:21,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:04:21,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 774 [2020-10-29 05:04:21,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:04:21,571 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:04:21,571 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:04:21,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:04:21,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:04:21,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:04:21,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:04:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2730 transitions. [2020-10-29 05:04:21,785 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2730 transitions. Word has length 774 [2020-10-29 05:04:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:04:21,790 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 2730 transitions. [2020-10-29 05:04:21,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:04:21,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2730 transitions. [2020-10-29 05:04:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2020-10-29 05:04:21,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:04:21,827 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] [2020-10-29 05:04:21,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:04:21,829 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:04:21,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:04:21,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1895331150, now seen corresponding path program 1 times [2020-10-29 05:04:21,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:04:21,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413429172] [2020-10-29 05:04:21,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:04:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:21,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:23,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:26,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:26,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 800 [2020-10-29 05:04:26,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:04:26,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 05:04:26,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:26,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:04:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:04:26,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 778 [2020-10-29 05:04:26,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:04:27,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:04:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:27,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:27,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:27,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:04:27,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:27,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:04:27,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:27,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 05:04:27,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:04:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:27,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:27,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:27,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:04:27,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:27,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:04:27,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:27,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:04:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:04:27,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:04:28,325 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 05:04:28,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413429172] [2020-10-29 05:04:28,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:04:28,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:04:28,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848262872] [2020-10-29 05:04:28,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:04:28,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:04:28,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:04:28,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:04:28,331 INFO L87 Difference]: Start difference. First operand 1690 states and 2730 transitions. Second operand 5 states. [2020-10-29 05:04:38,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:04:38,909 INFO L93 Difference]: Finished difference Result 5089 states and 8287 transitions. [2020-10-29 05:04:38,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:04:38,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 782 [2020-10-29 05:04:38,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:04:38,933 INFO L225 Difference]: With dead ends: 5089 [2020-10-29 05:04:38,933 INFO L226 Difference]: Without dead ends: 3405 [2020-10-29 05:04:38,938 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 05:04:38,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2020-10-29 05:04:39,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 3388. [2020-10-29 05:04:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3388 states. [2020-10-29 05:04:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 5179 transitions. [2020-10-29 05:04:39,049 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 5179 transitions. Word has length 782 [2020-10-29 05:04:39,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:04:39,051 INFO L481 AbstractCegarLoop]: Abstraction has 3388 states and 5179 transitions. [2020-10-29 05:04:39,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:04:39,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 5179 transitions. [2020-10-29 05:04:39,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2020-10-29 05:04:39,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:04:39,080 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] [2020-10-29 05:04:39,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:04:39,081 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:04:39,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:04:39,082 INFO L82 PathProgramCache]: Analyzing trace with hash -152347227, now seen corresponding path program 1 times [2020-10-29 05:04:39,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:04:39,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160101342] [2020-10-29 05:04:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:04:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:39,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:42,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:44,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:44,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 807 [2020-10-29 05:04:44,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:04:44,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 05:04:44,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:44,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:04:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:04:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 778 [2020-10-29 05:04:44,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:04:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:04:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:44,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:44,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:44,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:04:44,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:04:44,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:44,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:44,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:04:44,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:04:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:44,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:44,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:44,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:04:44,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:44,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:04:44,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:44,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:04:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:04:44,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:45,532 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 05:04:45,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160101342] [2020-10-29 05:04:45,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:04:45,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:04:45,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863769379] [2020-10-29 05:04:45,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:04:45,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:04:45,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:04:45,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:04:45,535 INFO L87 Difference]: Start difference. First operand 3388 states and 5179 transitions. Second operand 6 states. [2020-10-29 05:04:46,475 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:05:00,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:05:00,539 INFO L93 Difference]: Finished difference Result 13551 states and 21204 transitions. [2020-10-29 05:05:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:05:00,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 789 [2020-10-29 05:05:00,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:05:00,605 INFO L225 Difference]: With dead ends: 13551 [2020-10-29 05:05:00,605 INFO L226 Difference]: Without dead ends: 10169 [2020-10-29 05:05:00,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:05:00,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10169 states. [2020-10-29 05:05:01,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10169 to 10159. [2020-10-29 05:05:01,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10159 states. [2020-10-29 05:05:01,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10159 states to 10159 states and 14202 transitions. [2020-10-29 05:05:01,042 INFO L78 Accepts]: Start accepts. Automaton has 10159 states and 14202 transitions. Word has length 789 [2020-10-29 05:05:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:05:01,045 INFO L481 AbstractCegarLoop]: Abstraction has 10159 states and 14202 transitions. [2020-10-29 05:05:01,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:05:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 10159 states and 14202 transitions. [2020-10-29 05:05:01,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2020-10-29 05:05:01,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:05:01,085 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:05:01,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:05:01,086 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:05:01,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:05:01,087 INFO L82 PathProgramCache]: Analyzing trace with hash -496138567, now seen corresponding path program 1 times [2020-10-29 05:05:01,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:05:01,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194348695] [2020-10-29 05:05:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:05:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:01,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:01,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:01,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:04,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:06,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:06,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 883 [2020-10-29 05:05:06,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:05:06,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-29 05:05:06,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:06,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:05:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:05:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 05:05:06,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:06,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:05:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:06,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:06,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:05:06,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:06,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:05:06,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:06,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:06,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:05:06,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:06,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:05:06,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:06,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:05:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:06,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:06,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:06,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:05:06,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:06,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:05:06,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:06,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:05:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:06,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:05:06,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:05:06,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 05:05:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:06,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:06,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 05:05:06,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:06,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 05:05:06,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:06,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:05:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:05:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 05:05:06,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:06,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 05:05:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:06,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:06,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:06,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:05:06,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:06,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:05:06,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:06,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:06,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:05:06,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:05:06,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:05:06,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 87 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 05:05:07,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194348695] [2020-10-29 05:05:07,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:05:07,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:05:07,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835893120] [2020-10-29 05:05:07,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:05:07,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:05:07,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:05:07,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:05:07,420 INFO L87 Difference]: Start difference. First operand 10159 states and 14202 transitions. Second operand 7 states. [2020-10-29 05:05:18,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:05:18,837 INFO L93 Difference]: Finished difference Result 20521 states and 28969 transitions. [2020-10-29 05:05:18,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:05:18,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 861 [2020-10-29 05:05:18,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:05:18,898 INFO L225 Difference]: With dead ends: 20521 [2020-10-29 05:05:18,898 INFO L226 Difference]: Without dead ends: 10368 [2020-10-29 05:05:18,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:05:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2020-10-29 05:05:19,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 10317. [2020-10-29 05:05:19,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10317 states. [2020-10-29 05:05:19,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10317 states to 10317 states and 13279 transitions. [2020-10-29 05:05:19,239 INFO L78 Accepts]: Start accepts. Automaton has 10317 states and 13279 transitions. Word has length 861 [2020-10-29 05:05:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:05:19,239 INFO L481 AbstractCegarLoop]: Abstraction has 10317 states and 13279 transitions. [2020-10-29 05:05:19,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:05:19,240 INFO L276 IsEmpty]: Start isEmpty. Operand 10317 states and 13279 transitions. [2020-10-29 05:05:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 869 [2020-10-29 05:05:19,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:05:19,279 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:05:19,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:05:19,280 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:05:19,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:05:19,281 INFO L82 PathProgramCache]: Analyzing trace with hash 205864322, now seen corresponding path program 1 times [2020-10-29 05:05:19,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:05:19,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3111946] [2020-10-29 05:05:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:05:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:19,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:19,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:24,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:24,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 890 [2020-10-29 05:05:24,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:05:24,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 05:05:24,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:24,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:05:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:05:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 05:05:24,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:24,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:05:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:24,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:24,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:24,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:05:24,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:24,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:05:24,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:24,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:05:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:05:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:24,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:05:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:24,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:24,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:05:24,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:24,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:05:24,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:24,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:24,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:05:24,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:24,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:05:24,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:24,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:05:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:24,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:24,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 05:05:24,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:24,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 05:05:24,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:24,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:24,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:05:24,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:05:24,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 05:05:24,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:24,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 05:05:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:24,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:24,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:24,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:05:24,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:24,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:05:24,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:24,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:24,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:05:24,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:05:24,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:05:24,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 101 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 05:05:25,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3111946] [2020-10-29 05:05:25,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:05:25,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:05:25,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418644337] [2020-10-29 05:05:25,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:05:25,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:05:25,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:05:25,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:05:25,171 INFO L87 Difference]: Start difference. First operand 10317 states and 13279 transitions. Second operand 7 states. [2020-10-29 05:05:37,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:05:37,857 INFO L93 Difference]: Finished difference Result 26006 states and 34506 transitions. [2020-10-29 05:05:37,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:05:37,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 868 [2020-10-29 05:05:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:05:37,910 INFO L225 Difference]: With dead ends: 26006 [2020-10-29 05:05:37,910 INFO L226 Difference]: Without dead ends: 15695 [2020-10-29 05:05:37,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:05:37,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15695 states. [2020-10-29 05:05:38,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15695 to 15633. [2020-10-29 05:05:38,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15633 states. [2020-10-29 05:05:38,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15633 states to 15633 states and 19403 transitions. [2020-10-29 05:05:38,324 INFO L78 Accepts]: Start accepts. Automaton has 15633 states and 19403 transitions. Word has length 868 [2020-10-29 05:05:38,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:05:38,325 INFO L481 AbstractCegarLoop]: Abstraction has 15633 states and 19403 transitions. [2020-10-29 05:05:38,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:05:38,325 INFO L276 IsEmpty]: Start isEmpty. Operand 15633 states and 19403 transitions. [2020-10-29 05:05:38,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2020-10-29 05:05:38,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:05:38,383 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 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] [2020-10-29 05:05:38,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:05:38,383 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:05:38,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:05:38,384 INFO L82 PathProgramCache]: Analyzing trace with hash 176558827, now seen corresponding path program 1 times [2020-10-29 05:05:38,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:05:38,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431187515] [2020-10-29 05:05:38,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:05:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:38,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:38,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:38,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:43,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:43,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-29 05:05:43,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:05:43,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 05:05:43,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:43,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:05:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-29 05:05:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 05:05:43,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:43,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:05:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:43,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:43,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:43,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:05:43,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:43,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:05:43,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:43,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:43,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:05:43,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:43,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:05:43,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:43,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:05:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:43,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:43,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:43,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:05:43,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:43,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 05:05:43,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:43,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:43,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:05:43,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:43,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:05:43,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:43,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 05:05:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:43,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:43,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 05:05:43,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:43,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 05:05:43,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:43,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:43,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:05:43,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:43,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 05:05:43,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:43,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 05:05:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:43,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:43,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:43,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 05:05:43,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:05:43,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 05:05:43,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:43,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:43,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:05:43,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:43,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 05:05:43,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:43,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 05:05:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:43,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:43,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:43,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 05:05:43,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:43,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 05:05:43,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:43,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:05:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:05:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 05:05:43,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 289 proven. 4 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-29 05:05:44,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431187515] [2020-10-29 05:05:44,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:05:44,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:05:44,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796396841] [2020-10-29 05:05:44,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:05:44,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:05:44,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:05:44,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:05:44,502 INFO L87 Difference]: Start difference. First operand 15633 states and 19403 transitions. Second operand 7 states. [2020-10-29 05:05:56,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:05:56,953 INFO L93 Difference]: Finished difference Result 47042 states and 60070 transitions. [2020-10-29 05:05:56,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:05:56,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 959 [2020-10-29 05:05:56,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:05:57,068 INFO L225 Difference]: With dead ends: 47042 [2020-10-29 05:05:57,069 INFO L226 Difference]: Without dead ends: 31415 [2020-10-29 05:05:57,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:05:57,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31415 states. [2020-10-29 05:05:57,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31415 to 31266. [2020-10-29 05:05:57,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31266 states. [2020-10-29 05:05:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31266 states to 31266 states and 38790 transitions. [2020-10-29 05:05:57,776 INFO L78 Accepts]: Start accepts. Automaton has 31266 states and 38790 transitions. Word has length 959 [2020-10-29 05:05:57,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:05:57,777 INFO L481 AbstractCegarLoop]: Abstraction has 31266 states and 38790 transitions. [2020-10-29 05:05:57,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:05:57,777 INFO L276 IsEmpty]: Start isEmpty. Operand 31266 states and 38790 transitions. [2020-10-29 05:05:57,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2020-10-29 05:05:57,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:05:57,862 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:05:57,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:05:57,863 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:05:57,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:05:57,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1579627674, now seen corresponding path program 1 times [2020-10-29 05:05:57,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:05:57,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789687866] [2020-10-29 05:05:57,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:05:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:57,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:58,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:58,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:01,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:03,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:03,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 998 [2020-10-29 05:06:03,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:06:03,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-29 05:06:03,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:03,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:03,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:06:03,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 05:06:03,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 05:06:03,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:03,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:06:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:03,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:03,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:03,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:06:03,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:03,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:06:03,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:03,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:06:03,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:03,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:06:03,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:03,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:06:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:03,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:03,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:03,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 05:06:03,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 05:06:03,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:03,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:06:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 05:06:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:03,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 05:06:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:03,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:03,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:03,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 05:06:03,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:03,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 05:06:03,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:03,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:03,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:06:03,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:06:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 05:06:03,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:03,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-29 05:06:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:03,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:03,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:03,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:06:03,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:03,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:06:03,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:03,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:06:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:06:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:06:03,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 267 proven. 20 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 05:06:04,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789687866] [2020-10-29 05:06:04,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:06:04,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:06:04,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813567388] [2020-10-29 05:06:04,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:06:04,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:06:04,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:06:04,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:06:04,104 INFO L87 Difference]: Start difference. First operand 31266 states and 38790 transitions. Second operand 7 states. [2020-10-29 05:06:04,597 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:06:23,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:06:23,862 INFO L93 Difference]: Finished difference Result 103973 states and 137664 transitions. [2020-10-29 05:06:23,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:06:23,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 976 [2020-10-29 05:06:23,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:06:24,173 INFO L225 Difference]: With dead ends: 103973 [2020-10-29 05:06:24,174 INFO L226 Difference]: Without dead ends: 72713 [2020-10-29 05:06:24,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:06:24,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72713 states. [2020-10-29 05:06:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72713 to 71800. [2020-10-29 05:06:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71800 states. [2020-10-29 05:06:26,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71800 states to 71800 states and 89136 transitions. [2020-10-29 05:06:26,181 INFO L78 Accepts]: Start accepts. Automaton has 71800 states and 89136 transitions. Word has length 976 [2020-10-29 05:06:26,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:06:26,182 INFO L481 AbstractCegarLoop]: Abstraction has 71800 states and 89136 transitions. [2020-10-29 05:06:26,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:06:26,182 INFO L276 IsEmpty]: Start isEmpty. Operand 71800 states and 89136 transitions. [2020-10-29 05:06:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1049 [2020-10-29 05:06:26,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:06:26,851 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:06:26,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:06:26,851 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:06:26,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:06:26,852 INFO L82 PathProgramCache]: Analyzing trace with hash -2060911446, now seen corresponding path program 1 times [2020-10-29 05:06:26,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:06:26,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542490090] [2020-10-29 05:06:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:06:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:27,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:27,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:27,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:29,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:32,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:32,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1070 [2020-10-29 05:06:32,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:06:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-29 05:06:32,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:32,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:06:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 05:06:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 05:06:32,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:32,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:06:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:32,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:32,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:32,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:06:32,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:32,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:06:32,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:32,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:06:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:06:32,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:32,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:06:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:32,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:32,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:32,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 05:06:32,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:32,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 05:06:32,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:32,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:06:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 05:06:32,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:32,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 05:06:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:32,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:32,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:32,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 05:06:32,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 05:06:32,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:32,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:06:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:06:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 05:06:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:32,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-29 05:06:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:32,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:32,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:32,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:06:32,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:32,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:06:32,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:32,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:32,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:06:32,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:06:32,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:06:32,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 374 proven. 20 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 05:06:33,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542490090] [2020-10-29 05:06:33,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:06:33,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:06:33,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342959433] [2020-10-29 05:06:33,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:06:33,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:06:33,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:06:33,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:06:33,540 INFO L87 Difference]: Start difference. First operand 71800 states and 89136 transitions. Second operand 7 states. [2020-10-29 05:06:48,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:06:48,634 INFO L93 Difference]: Finished difference Result 165619 states and 215882 transitions. [2020-10-29 05:06:48,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:06:48,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1048 [2020-10-29 05:06:48,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:06:49,000 INFO L225 Difference]: With dead ends: 165619 [2020-10-29 05:06:49,000 INFO L226 Difference]: Without dead ends: 93889 [2020-10-29 05:06:49,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:06:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93889 states. [2020-10-29 05:06:51,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93889 to 92236. [2020-10-29 05:06:51,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92236 states. [2020-10-29 05:06:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92236 states to 92236 states and 112336 transitions. [2020-10-29 05:06:51,834 INFO L78 Accepts]: Start accepts. Automaton has 92236 states and 112336 transitions. Word has length 1048 [2020-10-29 05:06:51,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:06:51,835 INFO L481 AbstractCegarLoop]: Abstraction has 92236 states and 112336 transitions. [2020-10-29 05:06:51,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:06:51,835 INFO L276 IsEmpty]: Start isEmpty. Operand 92236 states and 112336 transitions. [2020-10-29 05:06:52,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1200 [2020-10-29 05:06:52,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:06:52,182 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 05:06:52,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:06:52,183 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:06:52,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:06:52,183 INFO L82 PathProgramCache]: Analyzing trace with hash -944608179, now seen corresponding path program 1 times [2020-10-29 05:06:52,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:06:52,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128955915] [2020-10-29 05:06:52,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:06:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:52,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:52,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:52,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:54,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:57,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:57,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1221 [2020-10-29 05:06:57,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:06:57,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-29 05:06:57,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:57,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:06:57,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 439 [2020-10-29 05:06:57,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 503 [2020-10-29 05:06:57,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:59,852 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-29 05:06:59,980 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-29 05:07:00,124 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-29 05:07:00,304 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-10-29 05:07:00,451 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-10-29 05:07:00,639 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-10-29 05:07:00,831 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 38 [2020-10-29 05:07:01,109 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 44 [2020-10-29 05:07:01,376 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 42 [2020-10-29 05:07:01,560 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 32 [2020-10-29 05:07:01,843 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33 [2020-10-29 05:07:01,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:07:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:01,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:01,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:01,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:07:01,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:01,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:07:01,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:01,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:01,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:07:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:07:01,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:02,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:07:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:02,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:02,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:02,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 05:07:02,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:02,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 05:07:02,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:02,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:07:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:07:02,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:02,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-29 05:07:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:02,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:02,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:02,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 05:07:02,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:02,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:07:02,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:02,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:07:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:07:02,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:02,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-10-29 05:07:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:02,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:02,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:02,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 05:07:02,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:02,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 05:07:02,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:02,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:07:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-29 05:07:02,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:07:09,255 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 419 proven. 3 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2020-10-29 05:07:09,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128955915] [2020-10-29 05:07:09,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:07:09,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:07:09,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268278211] [2020-10-29 05:07:09,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:07:09,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:07:09,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:07:09,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:07:09,258 INFO L87 Difference]: Start difference. First operand 92236 states and 112336 transitions. Second operand 17 states. [2020-10-29 05:07:12,801 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 05:07:13,019 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-29 05:07:14,501 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 129 [2020-10-29 05:07:17,950 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-29 05:07:18,251 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 05:07:18,500 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-29 05:07:18,939 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 122 [2020-10-29 05:07:20,933 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 121 [2020-10-29 05:07:23,459 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2020-10-29 05:07:24,339 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 05:07:24,523 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 05:07:26,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:07:26,415 INFO L93 Difference]: Finished difference Result 184967 states and 225267 transitions. [2020-10-29 05:07:26,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:07:26,416 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1199 [2020-10-29 05:07:26,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:07:26,718 INFO L225 Difference]: With dead ends: 184967 [2020-10-29 05:07:26,718 INFO L226 Difference]: Without dead ends: 92741