/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/Problem15_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:40:13,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:40:13,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:40:13,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:40:13,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:40:13,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:40:13,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:40:13,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:40:13,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:40:13,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:40:13,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:40:13,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:40:13,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:40:13,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:40:13,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:40:13,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:40:13,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:40:13,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:40:13,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:40:13,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:40:13,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:40:13,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:40:13,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:40:13,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:40:13,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:40:13,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:40:13,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:40:13,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:40:13,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:40:13,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:40:13,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:40:13,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:40:13,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:40:13,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:40:13,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:40:13,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:40:13,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:40:13,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:40:13,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:40:13,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:40:13,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:40:13,869 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 07:40:13,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:40:13,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:40:13,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:40:13,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:40:13,900 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:40:13,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:40:13,901 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:40:13,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:40:13,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:40:13,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:40:13,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:40:13,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:40:13,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:40:13,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:40:13,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:40:13,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:40:13,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:40:13,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:40:13,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:40:13,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:40:13,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:40:13,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:40:13,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:40:13,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:40:13,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:40:13,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:40:13,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:40:13,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:40:13,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:40:13,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:40:14,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:40:14,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:40:14,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:40:14,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:40:14,368 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:40:14,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label05.c [2020-10-29 07:40:14,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28b1395d8/6e4db2f7cf0d4ace8c120182bf30a48f/FLAG7b42fa073 [2020-10-29 07:40:15,390 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:40:15,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label05.c [2020-10-29 07:40:15,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28b1395d8/6e4db2f7cf0d4ace8c120182bf30a48f/FLAG7b42fa073 [2020-10-29 07:40:15,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28b1395d8/6e4db2f7cf0d4ace8c120182bf30a48f [2020-10-29 07:40:15,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:40:15,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:40:15,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:40:15,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:40:15,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:40:15,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:40:15" (1/1) ... [2020-10-29 07:40:15,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732eb14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:15, skipping insertion in model container [2020-10-29 07:40:15,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:40:15" (1/1) ... [2020-10-29 07:40:15,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:40:15,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:40:16,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:40:16,392 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:40:16,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:40:16,749 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:40:16,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:16 WrapperNode [2020-10-29 07:40:16,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:40:16,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:40:16,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:40:16,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:40:16,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:16" (1/1) ... [2020-10-29 07:40:16,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:16" (1/1) ... [2020-10-29 07:40:16,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:16" (1/1) ... [2020-10-29 07:40:16,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:16" (1/1) ... [2020-10-29 07:40:16,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:16" (1/1) ... [2020-10-29 07:40:16,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:16" (1/1) ... [2020-10-29 07:40:16,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:16" (1/1) ... [2020-10-29 07:40:16,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:40:16,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:40:16,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:40:16,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:40:16,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:16" (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 07:40:17,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:40:17,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:40:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:40:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:40:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:40:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:40:17,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:40:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:40:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:40:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:40:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:40:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:40:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:40:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:40:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:40:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:40:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:40:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:40:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:40:17,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:40:17,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:40:20,328 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:40:20,328 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:40:20,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:40:20 BoogieIcfgContainer [2020-10-29 07:40:20,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:40:20,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:40:20,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:40:20,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:40:20,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:40:15" (1/3) ... [2020-10-29 07:40:20,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233e7a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:40:20, skipping insertion in model container [2020-10-29 07:40:20,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:40:16" (2/3) ... [2020-10-29 07:40:20,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233e7a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:40:20, skipping insertion in model container [2020-10-29 07:40:20,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:40:20" (3/3) ... [2020-10-29 07:40:20,340 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label05.c [2020-10-29 07:40:20,353 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:40:20,359 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:40:20,373 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:40:20,405 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:40:20,405 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:40:20,406 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:40:20,406 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:40:20,406 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:40:20,406 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:40:20,406 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:40:20,406 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:40:20,435 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:40:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 07:40:20,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:20,447 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] [2020-10-29 07:40:20,448 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:20,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1575287431, now seen corresponding path program 1 times [2020-10-29 07:40:20,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:20,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416590786] [2020-10-29 07:40:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:21,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:21,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:40:21,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:21,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-29 07:40:21,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:21,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:40:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 07:40:21,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:40:21,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:21,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:21,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:21,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:21,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:21,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:40:21,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:21,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:40:21,587 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 07:40:21,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416590786] [2020-10-29 07:40:21,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:40:21,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:40:21,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899128609] [2020-10-29 07:40:21,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:40:21,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:21,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:40:21,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:40:21,618 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-29 07:40:29,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:29,522 INFO L93 Difference]: Finished difference Result 1522 states and 2792 transitions. [2020-10-29 07:40:29,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:40:29,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-29 07:40:29,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:29,556 INFO L225 Difference]: With dead ends: 1522 [2020-10-29 07:40:29,556 INFO L226 Difference]: Without dead ends: 1011 [2020-10-29 07:40:29,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:40:29,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-29 07:40:29,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1001. [2020-10-29 07:40:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-10-29 07:40:29,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1379 transitions. [2020-10-29 07:40:29,748 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1379 transitions. Word has length 71 [2020-10-29 07:40:29,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:29,751 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1379 transitions. [2020-10-29 07:40:29,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:40:29,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1379 transitions. [2020-10-29 07:40:29,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 07:40:29,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:29,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:29,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:40:29,766 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:29,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:29,767 INFO L82 PathProgramCache]: Analyzing trace with hash -2006284399, now seen corresponding path program 1 times [2020-10-29 07:40:29,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:29,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476754407] [2020-10-29 07:40:29,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:29,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:30,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:30,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:33,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:33,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 07:40:33,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:40:33,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4120 [2020-10-29 07:40:33,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:33,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:33,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:33,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 07:40:33,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 07:40:33,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:40:34,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:34,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:34,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:34,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:34,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:34,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:40:34,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:34,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:34,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:34,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:34,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:34,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:34,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:34,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:34,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:34,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:40:34,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:34,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 07:40:34,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:34,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:40:34,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:40:34,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476754407] [2020-10-29 07:40:34,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:34,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:40:34,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907862698] [2020-10-29 07:40:34,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:40:34,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:34,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:40:34,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:40:34,356 INFO L87 Difference]: Start difference. First operand 1001 states and 1379 transitions. Second operand 5 states. [2020-10-29 07:40:42,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:42,494 INFO L93 Difference]: Finished difference Result 2933 states and 4055 transitions. [2020-10-29 07:40:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:40:42,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-29 07:40:42,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:42,511 INFO L225 Difference]: With dead ends: 2933 [2020-10-29 07:40:42,511 INFO L226 Difference]: Without dead ends: 1938 [2020-10-29 07:40:42,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:40:42,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2020-10-29 07:40:42,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1936. [2020-10-29 07:40:42,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1936 states. [2020-10-29 07:40:42,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 2401 transitions. [2020-10-29 07:40:42,588 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 2401 transitions. Word has length 140 [2020-10-29 07:40:42,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:42,589 INFO L481 AbstractCegarLoop]: Abstraction has 1936 states and 2401 transitions. [2020-10-29 07:40:42,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:40:42,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 2401 transitions. [2020-10-29 07:40:42,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-29 07:40:42,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:42,596 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 07:40:42,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:40:42,596 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:42,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:42,597 INFO L82 PathProgramCache]: Analyzing trace with hash -171097408, now seen corresponding path program 1 times [2020-10-29 07:40:42,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:42,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395679565] [2020-10-29 07:40:42,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:42,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:42,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:43,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:45,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:47,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:47,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-29 07:40:47,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:40:47,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4420 [2020-10-29 07:40:47,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:47,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:47,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:40:47,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:40:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:40:47,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:47,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:47,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:47,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:47,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:47,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:40:47,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:47,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:47,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:47,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:47,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:47,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:47,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:47,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:47,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:47,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:40:47,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:47,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 07:40:47,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:47,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:47,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:47,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:40:47,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:47,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:40:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:47,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:47,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:47,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:40:47,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:47,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 07:40:47,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:47,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:40:47,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:40:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 07:40:47,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395679565] [2020-10-29 07:40:47,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:47,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:40:47,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45228955] [2020-10-29 07:40:47,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:40:47,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:47,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:40:47,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:40:47,830 INFO L87 Difference]: Start difference. First operand 1936 states and 2401 transitions. Second operand 7 states. [2020-10-29 07:41:00,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:00,263 INFO L93 Difference]: Finished difference Result 3909 states and 5082 transitions. [2020-10-29 07:41:00,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:41:00,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-29 07:41:00,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:00,282 INFO L225 Difference]: With dead ends: 3909 [2020-10-29 07:41:00,282 INFO L226 Difference]: Without dead ends: 2597 [2020-10-29 07:41:00,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:41:00,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2020-10-29 07:41:00,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2575. [2020-10-29 07:41:00,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2575 states. [2020-10-29 07:41:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3119 transitions. [2020-10-29 07:41:00,364 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3119 transitions. Word has length 245 [2020-10-29 07:41:00,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:00,365 INFO L481 AbstractCegarLoop]: Abstraction has 2575 states and 3119 transitions. [2020-10-29 07:41:00,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:41:00,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3119 transitions. [2020-10-29 07:41:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-29 07:41:00,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:00,374 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:00,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:41:00,374 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:00,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:00,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1915466862, now seen corresponding path program 1 times [2020-10-29 07:41:00,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:00,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336060684] [2020-10-29 07:41:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:00,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:00,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:00,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:05,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:05,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-29 07:41:05,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:41:05,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 07:41:05,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:05,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:05,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:41:05,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:41:05,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:41:05,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:05,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:05,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:05,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:05,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:05,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:05,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:41:05,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:05,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:05,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:05,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:05,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:41:05,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:05,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:05,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:06,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:06,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:41:06,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:06,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-29 07:41:06,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:06,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:41:06,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:06,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:41:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:06,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:06,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:06,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:41:06,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:06,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 07:41:06,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:06,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:06,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:06,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:41:06,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:06,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 126 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:41:07,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336060684] [2020-10-29 07:41:07,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:07,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:41:07,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92918849] [2020-10-29 07:41:07,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:41:07,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:07,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:41:07,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:41:07,041 INFO L87 Difference]: Start difference. First operand 2575 states and 3119 transitions. Second operand 7 states. [2020-10-29 07:41:17,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:17,012 INFO L93 Difference]: Finished difference Result 4878 states and 5969 transitions. [2020-10-29 07:41:17,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:41:17,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-29 07:41:17,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:17,031 INFO L225 Difference]: With dead ends: 4878 [2020-10-29 07:41:17,031 INFO L226 Difference]: Without dead ends: 2616 [2020-10-29 07:41:17,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:41:17,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2020-10-29 07:41:17,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 2588. [2020-10-29 07:41:17,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2588 states. [2020-10-29 07:41:17,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 3131 transitions. [2020-10-29 07:41:17,115 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 3131 transitions. Word has length 351 [2020-10-29 07:41:17,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:17,116 INFO L481 AbstractCegarLoop]: Abstraction has 2588 states and 3131 transitions. [2020-10-29 07:41:17,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:41:17,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 3131 transitions. [2020-10-29 07:41:17,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-29 07:41:17,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:17,125 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:17,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:41:17,125 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:17,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:17,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1744229506, now seen corresponding path program 1 times [2020-10-29 07:41:17,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:17,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480674558] [2020-10-29 07:41:17,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:17,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:17,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:17,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:19,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:22,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:22,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-29 07:41:22,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:41:22,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-29 07:41:22,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:22,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:22,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:41:22,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:41:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 371 [2020-10-29 07:41:22,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:41:22,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:22,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:22,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:22,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:22,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:22,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:41:22,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:22,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:41:22,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:41:22,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:22,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:22,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:22,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:22,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:41:22,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:22,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-29 07:41:22,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:22,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:41:22,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:22,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:41:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:22,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:23,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:23,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:23,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:41:23,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:23,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-29 07:41:23,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:23,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 07:41:23,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 118 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 07:41:24,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480674558] [2020-10-29 07:41:24,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:24,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:41:24,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661985606] [2020-10-29 07:41:24,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:41:24,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:24,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:41:24,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:41:24,128 INFO L87 Difference]: Start difference. First operand 2588 states and 3131 transitions. Second operand 7 states. [2020-10-29 07:41:38,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:38,343 INFO L93 Difference]: Finished difference Result 5490 states and 7108 transitions. [2020-10-29 07:41:38,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:41:38,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 366 [2020-10-29 07:41:38,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:38,369 INFO L225 Difference]: With dead ends: 5490 [2020-10-29 07:41:38,369 INFO L226 Difference]: Without dead ends: 4155 [2020-10-29 07:41:38,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:41:38,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4155 states. [2020-10-29 07:41:38,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4155 to 3523. [2020-10-29 07:41:38,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3523 states. [2020-10-29 07:41:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3523 states to 3523 states and 4451 transitions. [2020-10-29 07:41:38,496 INFO L78 Accepts]: Start accepts. Automaton has 3523 states and 4451 transitions. Word has length 366 [2020-10-29 07:41:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:38,498 INFO L481 AbstractCegarLoop]: Abstraction has 3523 states and 4451 transitions. [2020-10-29 07:41:38,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:41:38,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3523 states and 4451 transitions. [2020-10-29 07:41:38,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-10-29 07:41:38,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:38,511 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:38,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:41:38,512 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:38,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:38,512 INFO L82 PathProgramCache]: Analyzing trace with hash 163073338, now seen corresponding path program 1 times [2020-10-29 07:41:38,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:38,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717593288] [2020-10-29 07:41:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:38,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:39,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:41,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:41,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-10-29 07:41:41,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:41,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2534 [2020-10-29 07:41:41,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:41,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:41,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:41,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:41:41,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:41:41,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:41,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:41,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:41,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:41,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:41,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:41,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:41:41,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:41,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:41,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:41,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:41,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:41,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:41,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:41,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:41,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:41,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:41:41,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:41,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-29 07:41:41,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:41,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:41,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:41:41,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:41,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:41:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:41,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:42,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:42,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:41:42,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:42,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-29 07:41:42,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:42,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:42,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:42,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:42,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:41:42,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 233 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:41:42,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717593288] [2020-10-29 07:41:42,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:42,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:41:42,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801221173] [2020-10-29 07:41:42,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:41:42,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:42,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:41:42,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:41:42,783 INFO L87 Difference]: Start difference. First operand 3523 states and 4451 transitions. Second operand 7 states. [2020-10-29 07:41:54,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:54,610 INFO L93 Difference]: Finished difference Result 8681 states and 11414 transitions. [2020-10-29 07:41:54,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:41:54,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 455 [2020-10-29 07:41:54,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:54,642 INFO L225 Difference]: With dead ends: 8681 [2020-10-29 07:41:54,642 INFO L226 Difference]: Without dead ends: 5471 [2020-10-29 07:41:54,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:41:54,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5471 states. [2020-10-29 07:41:54,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5471 to 5442. [2020-10-29 07:41:54,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5442 states. [2020-10-29 07:41:54,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5442 states to 5442 states and 6639 transitions. [2020-10-29 07:41:54,820 INFO L78 Accepts]: Start accepts. Automaton has 5442 states and 6639 transitions. Word has length 455 [2020-10-29 07:41:54,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:54,821 INFO L481 AbstractCegarLoop]: Abstraction has 5442 states and 6639 transitions. [2020-10-29 07:41:54,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:41:54,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5442 states and 6639 transitions. [2020-10-29 07:41:54,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-29 07:41:54,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:54,836 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:54,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:41:54,836 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:54,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:54,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1544536797, now seen corresponding path program 1 times [2020-10-29 07:41:54,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:54,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064689819] [2020-10-29 07:41:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:55,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:55,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:55,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:57,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:57,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:58,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:59,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:59,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-29 07:41:59,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:41:59,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 07:41:59,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:59,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:59,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:41:59,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:41:59,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 315 [2020-10-29 07:41:59,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:00,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:00,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:00,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:00,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:00,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:00,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:42:00,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:00,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:00,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:00,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:00,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:00,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:00,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:00,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:00,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:42:00,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:00,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 07:42:00,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:00,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:42:00,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:00,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:42:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:00,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:00,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:42:00,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:42:00,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-10-29 07:42:00,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:00,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:42:00,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:01,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:42:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:01,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:01,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:42:01,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:01,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 07:42:01,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:01,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:42:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 373 proven. 109 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 07:42:01,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064689819] [2020-10-29 07:42:01,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:01,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:42:01,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625794862] [2020-10-29 07:42:01,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:42:01,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:01,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:42:01,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:42:01,469 INFO L87 Difference]: Start difference. First operand 5442 states and 6639 transitions. Second operand 8 states. [2020-10-29 07:42:17,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:17,508 INFO L93 Difference]: Finished difference Result 11948 states and 15561 transitions. [2020-10-29 07:42:17,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:42:17,511 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 476 [2020-10-29 07:42:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:17,550 INFO L225 Difference]: With dead ends: 11948 [2020-10-29 07:42:17,550 INFO L226 Difference]: Without dead ends: 7126 [2020-10-29 07:42:17,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:42:17,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2020-10-29 07:42:17,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 7064. [2020-10-29 07:42:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7064 states. [2020-10-29 07:42:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7064 states to 7064 states and 8493 transitions. [2020-10-29 07:42:17,813 INFO L78 Accepts]: Start accepts. Automaton has 7064 states and 8493 transitions. Word has length 476 [2020-10-29 07:42:17,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:17,814 INFO L481 AbstractCegarLoop]: Abstraction has 7064 states and 8493 transitions. [2020-10-29 07:42:17,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:42:17,814 INFO L276 IsEmpty]: Start isEmpty. Operand 7064 states and 8493 transitions. [2020-10-29 07:42:17,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2020-10-29 07:42:17,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:17,827 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:17,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:42:17,828 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:17,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:17,829 INFO L82 PathProgramCache]: Analyzing trace with hash 427469478, now seen corresponding path program 1 times [2020-10-29 07:42:17,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:17,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820849707] [2020-10-29 07:42:17,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:18,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:18,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:22,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:22,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 554 [2020-10-29 07:42:22,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:42:22,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 07:42:22,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:22,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:22,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:22,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:42:23,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:42:23,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:23,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:23,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:23,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:23,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:23,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:42:23,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:23,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:23,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:23,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:23,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:23,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:23,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:23,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:42:23,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:23,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 07:42:23,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:23,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:42:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:23,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:42:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:23,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:23,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:23,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:42:23,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:23,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 07:42:23,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:23,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:23,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:23,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:23,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:42:23,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:23,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:42:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:23,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:24,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:24,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:42:24,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:24,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 07:42:24,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:24,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:24,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:24,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 07:42:24,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:24,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 301 proven. 81 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-29 07:42:24,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820849707] [2020-10-29 07:42:24,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:24,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:42:24,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095528737] [2020-10-29 07:42:24,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:42:24,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:24,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:42:24,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:42:24,381 INFO L87 Difference]: Start difference. First operand 7064 states and 8493 transitions. Second operand 8 states. [2020-10-29 07:42:44,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:44,706 INFO L93 Difference]: Finished difference Result 17060 states and 20831 transitions. [2020-10-29 07:42:44,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 07:42:44,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 538 [2020-10-29 07:42:44,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:44,754 INFO L225 Difference]: With dead ends: 17060 [2020-10-29 07:42:44,754 INFO L226 Difference]: Without dead ends: 10309 [2020-10-29 07:42:44,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-29 07:42:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10309 states. [2020-10-29 07:42:45,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10309 to 9941. [2020-10-29 07:42:45,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9941 states. [2020-10-29 07:42:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9941 states to 9941 states and 11801 transitions. [2020-10-29 07:42:45,077 INFO L78 Accepts]: Start accepts. Automaton has 9941 states and 11801 transitions. Word has length 538 [2020-10-29 07:42:45,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:45,078 INFO L481 AbstractCegarLoop]: Abstraction has 9941 states and 11801 transitions. [2020-10-29 07:42:45,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:42:45,078 INFO L276 IsEmpty]: Start isEmpty. Operand 9941 states and 11801 transitions. [2020-10-29 07:42:45,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2020-10-29 07:42:45,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:45,091 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:45,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:42:45,092 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:45,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:45,093 INFO L82 PathProgramCache]: Analyzing trace with hash 890158510, now seen corresponding path program 1 times [2020-10-29 07:42:45,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:45,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623012694] [2020-10-29 07:42:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:45,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:45,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:47,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 566 [2020-10-29 07:42:49,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:42:49,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4118 [2020-10-29 07:42:49,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:49,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 493 [2020-10-29 07:42:49,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 07:42:49,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:49,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:49,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:49,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:49,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:42:49,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:49,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:49,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:49,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:49,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:49,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:42:49,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:49,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:42:49,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:49,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:49,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:49,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:42:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:49,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:42:49,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:49,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:42:49,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:49,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:49,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:42:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:49,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:42:49,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:49,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 07:42:49,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:49,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:49,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:42:49,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 192 proven. 3 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-29 07:42:50,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623012694] [2020-10-29 07:42:50,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:50,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:42:50,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152240029] [2020-10-29 07:42:50,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:42:50,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:50,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:42:50,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:42:50,167 INFO L87 Difference]: Start difference. First operand 9941 states and 11801 transitions. Second operand 5 states. [2020-10-29 07:43:04,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:04,833 INFO L93 Difference]: Finished difference Result 22074 states and 27119 transitions. [2020-10-29 07:43:04,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:43:04,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 550 [2020-10-29 07:43:04,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:04,895 INFO L225 Difference]: With dead ends: 22074 [2020-10-29 07:43:04,896 INFO L226 Difference]: Without dead ends: 12446 [2020-10-29 07:43:04,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:43:04,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12446 states. [2020-10-29 07:43:05,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12446 to 11815. [2020-10-29 07:43:05,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11815 states. [2020-10-29 07:43:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11815 states to 11815 states and 13838 transitions. [2020-10-29 07:43:05,347 INFO L78 Accepts]: Start accepts. Automaton has 11815 states and 13838 transitions. Word has length 550 [2020-10-29 07:43:05,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:05,348 INFO L481 AbstractCegarLoop]: Abstraction has 11815 states and 13838 transitions. [2020-10-29 07:43:05,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:43:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 11815 states and 13838 transitions. [2020-10-29 07:43:05,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-10-29 07:43:05,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:05,366 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:05,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:43:05,367 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:05,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:05,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1993823349, now seen corresponding path program 1 times [2020-10-29 07:43:05,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:05,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854258321] [2020-10-29 07:43:05,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:05,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:06,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:07,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:09,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:09,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:09,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 582 [2020-10-29 07:43:09,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:43:09,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4090 [2020-10-29 07:43:09,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:09,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:09,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:09,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:43:09,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 07:43:09,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:09,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:09,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:09,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:09,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:09,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:09,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:43:09,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:09,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:09,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:09,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:09,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:09,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:09,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:09,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:09,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:09,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:43:09,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:09,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 07:43:09,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:09,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:09,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:09,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:09,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:09,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:10,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:43:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:10,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:10,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:10,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:43:10,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:10,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 07:43:10,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:10,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:43:10,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:10,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:43:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:10,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:10,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:10,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 07:43:10,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:43:10,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 07:43:10,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:10,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 07:43:10,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 318 proven. 64 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 07:43:10,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854258321] [2020-10-29 07:43:10,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:10,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:43:10,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666624007] [2020-10-29 07:43:10,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:10,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:10,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:10,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:10,713 INFO L87 Difference]: Start difference. First operand 11815 states and 13838 transitions. Second operand 7 states. [2020-10-29 07:43:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:25,552 INFO L93 Difference]: Finished difference Result 25872 states and 31314 transitions. [2020-10-29 07:43:25,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:43:25,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 566 [2020-10-29 07:43:25,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:25,616 INFO L225 Difference]: With dead ends: 25872 [2020-10-29 07:43:25,617 INFO L226 Difference]: Without dead ends: 14370 [2020-10-29 07:43:25,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:43:25,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14370 states. [2020-10-29 07:43:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14370 to 13406. [2020-10-29 07:43:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13406 states. [2020-10-29 07:43:26,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13406 states to 13406 states and 15655 transitions. [2020-10-29 07:43:26,005 INFO L78 Accepts]: Start accepts. Automaton has 13406 states and 15655 transitions. Word has length 566 [2020-10-29 07:43:26,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:26,006 INFO L481 AbstractCegarLoop]: Abstraction has 13406 states and 15655 transitions. [2020-10-29 07:43:26,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:26,006 INFO L276 IsEmpty]: Start isEmpty. Operand 13406 states and 15655 transitions. [2020-10-29 07:43:26,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2020-10-29 07:43:26,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:26,021 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:26,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:43:26,022 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:26,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:26,023 INFO L82 PathProgramCache]: Analyzing trace with hash 2116007908, now seen corresponding path program 1 times [2020-10-29 07:43:26,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:26,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547483290] [2020-10-29 07:43:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:26,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:26,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:28,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:29,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:29,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 612 [2020-10-29 07:43:29,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:43:29,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3409 [2020-10-29 07:43:29,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:29,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:43:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 07:43:29,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:29,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:29,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:29,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:29,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:29,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:29,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:43:29,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:29,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:29,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:29,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:29,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:29,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:29,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:29,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:29,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:29,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:43:29,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:29,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:43:29,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:29,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:29,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:29,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:29,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:29,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:30,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:43:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:30,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:30,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:30,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:43:30,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:30,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 07:43:30,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:30,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:30,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:30,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:30,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:43:30,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:30,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:43:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:30,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:30,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:30,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:43:30,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:30,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 07:43:30,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:30,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:30,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:30,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:30,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:43:30,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 359 proven. 64 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 07:43:30,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547483290] [2020-10-29 07:43:30,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:30,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:43:30,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808982659] [2020-10-29 07:43:30,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:43:30,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:30,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:43:30,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:43:30,639 INFO L87 Difference]: Start difference. First operand 13406 states and 15655 transitions. Second operand 6 states. [2020-10-29 07:43:46,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:46,260 INFO L93 Difference]: Finished difference Result 27281 states and 33203 transitions. [2020-10-29 07:43:46,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:43:46,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 596 [2020-10-29 07:43:46,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:46,327 INFO L225 Difference]: With dead ends: 27281 [2020-10-29 07:43:46,328 INFO L226 Difference]: Without dead ends: 17609 [2020-10-29 07:43:46,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:43:46,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17609 states. [2020-10-29 07:43:46,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17609 to 16978. [2020-10-29 07:43:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16978 states. [2020-10-29 07:43:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16978 states to 16978 states and 20139 transitions. [2020-10-29 07:43:46,761 INFO L78 Accepts]: Start accepts. Automaton has 16978 states and 20139 transitions. Word has length 596 [2020-10-29 07:43:46,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:46,762 INFO L481 AbstractCegarLoop]: Abstraction has 16978 states and 20139 transitions. [2020-10-29 07:43:46,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:43:46,763 INFO L276 IsEmpty]: Start isEmpty. Operand 16978 states and 20139 transitions. [2020-10-29 07:43:46,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2020-10-29 07:43:46,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:46,781 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:46,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:43:46,782 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:46,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:46,783 INFO L82 PathProgramCache]: Analyzing trace with hash 5161167, now seen corresponding path program 1 times [2020-10-29 07:43:46,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:46,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114163811] [2020-10-29 07:43:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:47,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:47,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:49,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:49,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 638 [2020-10-29 07:43:49,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:43:49,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2818 [2020-10-29 07:43:49,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:49,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:43:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 07:43:49,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:49,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:49,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:49,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:49,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:49,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:49,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:43:49,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:49,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:49,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:49,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:49,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:50,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:50,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:43:50,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:50,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:43:50,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:50,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:50,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:50,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:43:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:50,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:50,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:50,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:43:50,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:50,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 07:43:50,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:50,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:50,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:50,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:50,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:43:50,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:50,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:43:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:50,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:50,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:50,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 07:43:50,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:50,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-29 07:43:50,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:50,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 07:43:50,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 453 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:43:50,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114163811] [2020-10-29 07:43:50,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:50,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:43:50,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922920588] [2020-10-29 07:43:50,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:50,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:50,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:50,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:50,943 INFO L87 Difference]: Start difference. First operand 16978 states and 20139 transitions. Second operand 7 states.