/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=DEEPEST --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/heap-manipulation/bubble_sort_linux-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:51:13,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:51:13,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:51:13,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:51:13,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:51:13,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:51:13,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:51:13,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:51:13,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:51:13,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:51:13,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:51:13,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:51:13,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:51:13,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:51:13,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:51:13,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:51:13,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:51:13,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:51:13,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:51:13,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:51:13,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:51:13,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:51:13,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:51:13,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:51:13,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:51:13,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:51:13,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:51:13,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:51:13,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:51:13,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:51:13,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:51:13,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:51:13,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:51:13,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:51:13,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:51:13,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:51:13,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:51:13,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:51:13,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:51:13,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:51:13,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:51:13,899 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 [2020-10-27 19:51:13,949 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:51:13,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:51:13,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:51:13,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:51:13,954 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:51:13,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:51:13,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:51:13,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:51:13,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:51:13,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:51:13,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:51:13,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:51:13,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:51:13,957 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:51:13,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:51:13,957 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:51:13,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:51:13,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:51:13,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:51:13,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:51:13,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:51:13,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:51:13,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:51:13,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:51:13,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:51:13,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:51:13,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:51:13,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:51:13,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:51:13,960 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:51:14,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:51:14,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:51:14,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:51:14,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:51:14,464 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:51:14,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-1.i [2020-10-27 19:51:14,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bce79a4c0/fbabdb78d7a74a8b9c9032cefdf07c75/FLAG80b01a2d6 [2020-10-27 19:51:15,348 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:51:15,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-1.i [2020-10-27 19:51:15,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bce79a4c0/fbabdb78d7a74a8b9c9032cefdf07c75/FLAG80b01a2d6 [2020-10-27 19:51:15,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bce79a4c0/fbabdb78d7a74a8b9c9032cefdf07c75 [2020-10-27 19:51:15,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:51:15,548 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:51:15,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:51:15,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:51:15,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:51:15,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:51:15" (1/1) ... [2020-10-27 19:51:15,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@334a9848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:15, skipping insertion in model container [2020-10-27 19:51:15,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:51:15" (1/1) ... [2020-10-27 19:51:15,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:51:15,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:51:16,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:51:16,145 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:51:16,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:51:16,382 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:51:16,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:16 WrapperNode [2020-10-27 19:51:16,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:51:16,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:51:16,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:51:16,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:51:16,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:16" (1/1) ... [2020-10-27 19:51:16,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:16" (1/1) ... [2020-10-27 19:51:16,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:16" (1/1) ... [2020-10-27 19:51:16,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:16" (1/1) ... [2020-10-27 19:51:16,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:16" (1/1) ... [2020-10-27 19:51:16,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:16" (1/1) ... [2020-10-27 19:51:16,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:16" (1/1) ... [2020-10-27 19:51:16,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:51:16,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:51:16,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:51:16,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:51:16,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:16" (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 [2020-10-27 19:51:16,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:51:16,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:51:16,570 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:51:16,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 19:51:16,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 19:51:16,571 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-10-27 19:51:16,571 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2020-10-27 19:51:16,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-10-27 19:51:16,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2020-10-27 19:51:16,571 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-10-27 19:51:16,571 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2020-10-27 19:51:16,572 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2020-10-27 19:51:16,572 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2020-10-27 19:51:16,572 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2020-10-27 19:51:16,572 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2020-10-27 19:51:16,572 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2020-10-27 19:51:16,572 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2020-10-27 19:51:16,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:51:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:51:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:51:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 19:51:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 19:51:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:51:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:51:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 19:51:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 19:51:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 19:51:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 19:51:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 19:51:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 19:51:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 19:51:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 19:51:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 19:51:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 19:51:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 19:51:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 19:51:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 19:51:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 19:51:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 19:51:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 19:51:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 19:51:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 19:51:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 19:51:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 19:51:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 19:51:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 19:51:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 19:51:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 19:51:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 19:51:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 19:51:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 19:51:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 19:51:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 19:51:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 19:51:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 19:51:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 19:51:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 19:51:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 19:51:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 19:51:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 19:51:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 19:51:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 19:51:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 19:51:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 19:51:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 19:51:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 19:51:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 19:51:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 19:51:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 19:51:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 19:51:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 19:51:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 19:51:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 19:51:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 19:51:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 19:51:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 19:51:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 19:51:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 19:51:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 19:51:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 19:51:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 19:51:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 19:51:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 19:51:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 19:51:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 19:51:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 19:51:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:51:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 19:51:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 19:51:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 19:51:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 19:51:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 19:51:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 19:51:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 19:51:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 19:51:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 19:51:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 19:51:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 19:51:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 19:51:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 19:51:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 19:51:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 19:51:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 19:51:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 19:51:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 19:51:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 19:51:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 19:51:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 19:51:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 19:51:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 19:51:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 19:51:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 19:51:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 19:51:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 19:51:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 19:51:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 19:51:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 19:51:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 19:51:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 19:51:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 19:51:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 19:51:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 19:51:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 19:51:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 19:51:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 19:51:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-10-27 19:51:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-10-27 19:51:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-10-27 19:51:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-10-27 19:51:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-10-27 19:51:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-10-27 19:51:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-10-27 19:51:16,591 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-10-27 19:51:16,591 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-10-27 19:51:16,591 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-10-27 19:51:16,591 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-10-27 19:51:16,591 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-10-27 19:51:16,591 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-10-27 19:51:16,591 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-10-27 19:51:16,592 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-10-27 19:51:16,592 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-10-27 19:51:16,592 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-10-27 19:51:16,592 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-10-27 19:51:16,592 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-10-27 19:51:16,592 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-10-27 19:51:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-10-27 19:51:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-10-27 19:51:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-10-27 19:51:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-10-27 19:51:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-10-27 19:51:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-10-27 19:51:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-10-27 19:51:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-10-27 19:51:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-27 19:51:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-10-27 19:51:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-10-27 19:51:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-10-27 19:51:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-10-27 19:51:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-10-27 19:51:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-10-27 19:51:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-10-27 19:51:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-10-27 19:51:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-10-27 19:51:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-27 19:51:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-10-27 19:51:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-10-27 19:51:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-10-27 19:51:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-10-27 19:51:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-10-27 19:51:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-10-27 19:51:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-10-27 19:51:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-10-27 19:51:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-10-27 19:51:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-10-27 19:51:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-10-27 19:51:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-10-27 19:51:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-10-27 19:51:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-10-27 19:51:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-10-27 19:51:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-27 19:51:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-10-27 19:51:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-10-27 19:51:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-10-27 19:51:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-10-27 19:51:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-10-27 19:51:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-10-27 19:51:16,599 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-10-27 19:51:16,599 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-10-27 19:51:16,599 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-10-27 19:51:16,599 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-10-27 19:51:16,599 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-10-27 19:51:16,599 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-10-27 19:51:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-10-27 19:51:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-10-27 19:51:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-10-27 19:51:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-10-27 19:51:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-10-27 19:51:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-10-27 19:51:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-10-27 19:51:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-10-27 19:51:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-10-27 19:51:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-10-27 19:51:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-10-27 19:51:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-10-27 19:51:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-10-27 19:51:16,601 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-10-27 19:51:16,602 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-10-27 19:51:16,602 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-10-27 19:51:16,602 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-10-27 19:51:16,602 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-10-27 19:51:16,602 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-10-27 19:51:16,602 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-10-27 19:51:16,602 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-10-27 19:51:16,603 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-10-27 19:51:16,603 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-10-27 19:51:16,603 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-10-27 19:51:16,603 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-10-27 19:51:16,603 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-10-27 19:51:16,603 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-10-27 19:51:16,603 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-10-27 19:51:16,604 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-10-27 19:51:16,604 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-10-27 19:51:16,604 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-10-27 19:51:16,604 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-10-27 19:51:16,604 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-10-27 19:51:16,604 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-10-27 19:51:16,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:51:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-10-27 19:51:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2020-10-27 19:51:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 19:51:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-10-27 19:51:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 19:51:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2020-10-27 19:51:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-10-27 19:51:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2020-10-27 19:51:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2020-10-27 19:51:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 19:51:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:51:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2020-10-27 19:51:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2020-10-27 19:51:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:51:16,607 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2020-10-27 19:51:16,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:51:16,607 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2020-10-27 19:51:16,607 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2020-10-27 19:51:16,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:51:16,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:51:16,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:51:16,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 19:51:16,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:51:17,566 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:51:17,567 INFO L298 CfgBuilder]: Removed 41 assume(true) statements. [2020-10-27 19:51:17,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:51:17 BoogieIcfgContainer [2020-10-27 19:51:17,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:51:17,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:51:17,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:51:17,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:51:17,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:51:15" (1/3) ... [2020-10-27 19:51:17,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617e0cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:51:17, skipping insertion in model container [2020-10-27 19:51:17,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:16" (2/3) ... [2020-10-27 19:51:17,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617e0cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:51:17, skipping insertion in model container [2020-10-27 19:51:17,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:51:17" (3/3) ... [2020-10-27 19:51:17,589 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-1.i [2020-10-27 19:51:17,602 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:51:17,608 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:51:17,622 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:51:17,673 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:51:17,674 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:51:17,674 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:51:17,674 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:51:17,674 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:51:17,678 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:51:17,678 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:51:17,678 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:51:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-10-27 19:51:17,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 19:51:17,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:17,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:51:17,742 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:17,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:17,752 INFO L82 PathProgramCache]: Analyzing trace with hash -246079649, now seen corresponding path program 1 times [2020-10-27 19:51:17,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:17,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027696669] [2020-10-27 19:51:17,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:18,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:18,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:18,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 19:51:18,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:51:18,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-27 19:51:18,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:18,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:18,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 19:51:18,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:18,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-27 19:51:18,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:18,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:18,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:18,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:18,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 19:51:18,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:18,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:51:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:18,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:18,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:18,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:51:18,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:51:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:18,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:18,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027696669] [2020-10-27 19:51:18,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:18,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:51:18,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787654879] [2020-10-27 19:51:18,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:51:18,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:18,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:51:18,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:51:18,485 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 4 states. [2020-10-27 19:51:19,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:19,043 INFO L93 Difference]: Finished difference Result 309 states and 499 transitions. [2020-10-27 19:51:19,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 19:51:19,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-27 19:51:19,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:19,058 INFO L225 Difference]: With dead ends: 309 [2020-10-27 19:51:19,058 INFO L226 Difference]: Without dead ends: 150 [2020-10-27 19:51:19,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:51:19,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-27 19:51:19,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 132. [2020-10-27 19:51:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-27 19:51:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-10-27 19:51:19,133 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 16 [2020-10-27 19:51:19,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:19,133 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-10-27 19:51:19,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:51:19,133 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-10-27 19:51:19,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 19:51:19,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:19,136 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] [2020-10-27 19:51:19,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:51:19,136 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:19,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:19,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1061752932, now seen corresponding path program 1 times [2020-10-27 19:51:19,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:19,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637286949] [2020-10-27 19:51:19,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:19,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:19,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:19,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 19:51:19,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:19,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-27 19:51:19,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:19,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:51:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:51:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 19:51:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:19,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:19,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:19,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:19,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:19,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:19,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 19:51:19,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:51:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:51:19,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:19,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:51:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:19,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:19,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:19,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:51:19,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:19,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 19:51:19,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:19,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:51:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 19:51:19,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:19,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:19,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:19,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:19,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:51:19,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:19,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 19:51:19,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:19,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:19,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:51:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:19,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:19,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:19,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:51:19,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:19,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 19:51:19,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:19,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:19,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:19,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:19,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:19,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:19,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:19,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:19,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:19,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:19,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:51:19,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:19,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:19,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:19,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:19,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:19,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:19,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637286949] [2020-10-27 19:51:19,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:19,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 19:51:19,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621752110] [2020-10-27 19:51:19,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:51:19,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:19,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:51:19,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:51:19,802 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 8 states. [2020-10-27 19:51:20,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:20,624 INFO L93 Difference]: Finished difference Result 154 states and 183 transitions. [2020-10-27 19:51:20,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 19:51:20,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-27 19:51:20,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:20,627 INFO L225 Difference]: With dead ends: 154 [2020-10-27 19:51:20,628 INFO L226 Difference]: Without dead ends: 149 [2020-10-27 19:51:20,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-27 19:51:20,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-27 19:51:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 131. [2020-10-27 19:51:20,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-27 19:51:20,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2020-10-27 19:51:20,651 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 36 [2020-10-27 19:51:20,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:20,652 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2020-10-27 19:51:20,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:51:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2020-10-27 19:51:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 19:51:20,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:20,653 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] [2020-10-27 19:51:20,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:51:20,654 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:20,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:20,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1176936722, now seen corresponding path program 1 times [2020-10-27 19:51:20,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:20,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129179042] [2020-10-27 19:51:20,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:20,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:21,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:21,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 19:51:21,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:21,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-27 19:51:21,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:21,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 19:51:21,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:51:21,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 19:51:21,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:21,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:21,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:21,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:21,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:21,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:21,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 19:51:21,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:51:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:51:21,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:21,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:51:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:21,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:21,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:21,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:51:21,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:21,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 19:51:21,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:21,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:51:21,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:21,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 19:51:21,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:21,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:21,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:21,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:21,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:51:21,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:21,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 19:51:21,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:51:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 19:51:21,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:21,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:51:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:21,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:21,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:21,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:51:21,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 19:51:21,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:51:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 19:51:21,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:21,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:21,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:21,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:21,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:21,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:21,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 19:51:21,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:51:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:51:21,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:22,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129179042] [2020-10-27 19:51:22,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:22,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 19:51:22,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282072234] [2020-10-27 19:51:22,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 19:51:22,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:22,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 19:51:22,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-27 19:51:22,047 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand 16 states. [2020-10-27 19:51:23,338 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-27 19:51:23,523 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-27 19:51:23,669 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-27 19:51:23,840 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-27 19:51:25,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:25,964 INFO L93 Difference]: Finished difference Result 250 states and 297 transitions. [2020-10-27 19:51:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 19:51:25,965 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-10-27 19:51:25,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:25,969 INFO L225 Difference]: With dead ends: 250 [2020-10-27 19:51:25,969 INFO L226 Difference]: Without dead ends: 242 [2020-10-27 19:51:25,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=228, Invalid=962, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 19:51:25,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-27 19:51:26,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 211. [2020-10-27 19:51:26,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-27 19:51:26,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 253 transitions. [2020-10-27 19:51:26,044 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 253 transitions. Word has length 39 [2020-10-27 19:51:26,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:26,045 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 253 transitions. [2020-10-27 19:51:26,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 19:51:26,045 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 253 transitions. [2020-10-27 19:51:26,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 19:51:26,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:26,049 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] [2020-10-27 19:51:26,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:51:26,049 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:26,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:26,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1868463441, now seen corresponding path program 1 times [2020-10-27 19:51:26,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:26,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511653628] [2020-10-27 19:51:26,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:26,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:26,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:26,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 19:51:26,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:26,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 882 [2020-10-27 19:51:26,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:26,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 19:51:26,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:51:26,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 19:51:26,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:27,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:27,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:27,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:27,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:27,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:27,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 19:51:27,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:51:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:51:27,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:27,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:51:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:27,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:27,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:27,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:51:27,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:27,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-27 19:51:27,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:27,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:51:27,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:27,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:51:27,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:27,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:27,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:27,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:27,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:51:27,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:27,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-27 19:51:27,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:51:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:27,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:51:27,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:28,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:51:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:28,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:28,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:28,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:51:28,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:28,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 19:51:28,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:51:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:28,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:51:28,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:28,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:28,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:28,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:28,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:28,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:28,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 19:51:28,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:51:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:51:28,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:28,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511653628] [2020-10-27 19:51:28,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:28,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-27 19:51:28,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036879265] [2020-10-27 19:51:28,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 19:51:28,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:28,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 19:51:28,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-10-27 19:51:28,511 INFO L87 Difference]: Start difference. First operand 211 states and 253 transitions. Second operand 19 states. [2020-10-27 19:51:32,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:32,659 INFO L93 Difference]: Finished difference Result 335 states and 405 transitions. [2020-10-27 19:51:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 19:51:32,660 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2020-10-27 19:51:32,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:32,668 INFO L225 Difference]: With dead ends: 335 [2020-10-27 19:51:32,668 INFO L226 Difference]: Without dead ends: 330 [2020-10-27 19:51:32,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 19:51:32,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-27 19:51:32,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 292. [2020-10-27 19:51:32,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-27 19:51:32,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 355 transitions. [2020-10-27 19:51:32,727 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 355 transitions. Word has length 42 [2020-10-27 19:51:32,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:32,728 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 355 transitions. [2020-10-27 19:51:32,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 19:51:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 355 transitions. [2020-10-27 19:51:32,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 19:51:32,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:32,731 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] [2020-10-27 19:51:32,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:51:32,731 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:32,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:32,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1056603810, now seen corresponding path program 1 times [2020-10-27 19:51:32,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:32,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169056570] [2020-10-27 19:51:32,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:33,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:33,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 19:51:33,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:33,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-10-27 19:51:33,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 19:51:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:51:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 19:51:33,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:33,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:33,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:33,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:33,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:33,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:33,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:51:33,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:33,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:51:33,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:33,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:51:33,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:33,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:51:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:34,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:34,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:51:34,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:34,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-27 19:51:34,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:34,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:51:34,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:34,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:51:34,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:34,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:34,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:34,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:34,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:51:34,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:34,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-27 19:51:34,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:34,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:51:34,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:51:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:34,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:51:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:34,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:34,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:34,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:51:34,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:34,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 19:51:34,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:34,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:51:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:51:34,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:34,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:34,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:34,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:34,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:34,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 19:51:34,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:51:34,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:34,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:51:34,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:34,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169056570] [2020-10-27 19:51:34,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:34,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-27 19:51:34,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431758650] [2020-10-27 19:51:34,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 19:51:34,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:34,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 19:51:34,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-27 19:51:34,875 INFO L87 Difference]: Start difference. First operand 292 states and 355 transitions. Second operand 18 states. [2020-10-27 19:51:38,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:38,651 INFO L93 Difference]: Finished difference Result 329 states and 396 transitions. [2020-10-27 19:51:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 19:51:38,653 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2020-10-27 19:51:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:38,656 INFO L225 Difference]: With dead ends: 329 [2020-10-27 19:51:38,656 INFO L226 Difference]: Without dead ends: 324 [2020-10-27 19:51:38,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=200, Invalid=1060, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 19:51:38,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-27 19:51:38,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 292. [2020-10-27 19:51:38,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-27 19:51:38,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 354 transitions. [2020-10-27 19:51:38,690 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 354 transitions. Word has length 45 [2020-10-27 19:51:38,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:38,691 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 354 transitions. [2020-10-27 19:51:38,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 19:51:38,691 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 354 transitions. [2020-10-27 19:51:38,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 19:51:38,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:38,692 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] [2020-10-27 19:51:38,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:51:38,693 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:38,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:38,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1810679932, now seen corresponding path program 1 times [2020-10-27 19:51:38,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:38,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346473238] [2020-10-27 19:51:38,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:38,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:39,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:39,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 19:51:39,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:39,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-10-27 19:51:39,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:39,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 19:51:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:51:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 19:51:39,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:39,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:39,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:39,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:39,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:39,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:39,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:51:39,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:51:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:51:39,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:39,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:51:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:39,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:40,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:40,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:51:40,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:40,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-27 19:51:40,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:40,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:51:40,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:40,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:51:40,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:40,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:40,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:40,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:40,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:51:40,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:40,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-27 19:51:40,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:40,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:51:40,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:40,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:51:40,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:40,743 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-27 19:51:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:51:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:40,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:40,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:40,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:51:40,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:40,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 19:51:40,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:40,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:51:40,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:40,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:51:40,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:41,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:41,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:41,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:41,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:41,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:41,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 19:51:41,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:51:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:51:41,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:41,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346473238] [2020-10-27 19:51:41,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:41,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-27 19:51:41,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126389399] [2020-10-27 19:51:41,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 19:51:41,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:41,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 19:51:41,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-27 19:51:41,253 INFO L87 Difference]: Start difference. First operand 292 states and 354 transitions. Second operand 19 states. [2020-10-27 19:51:42,300 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-27 19:51:45,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:45,460 INFO L93 Difference]: Finished difference Result 329 states and 395 transitions. [2020-10-27 19:51:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 19:51:45,462 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2020-10-27 19:51:45,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:45,464 INFO L225 Difference]: With dead ends: 329 [2020-10-27 19:51:45,464 INFO L226 Difference]: Without dead ends: 324 [2020-10-27 19:51:45,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 19:51:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-27 19:51:45,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 292. [2020-10-27 19:51:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-27 19:51:45,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 353 transitions. [2020-10-27 19:51:45,503 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 353 transitions. Word has length 48 [2020-10-27 19:51:45,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:45,504 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 353 transitions. [2020-10-27 19:51:45,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 19:51:45,504 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 353 transitions. [2020-10-27 19:51:45,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 19:51:45,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:45,505 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] [2020-10-27 19:51:45,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:51:45,506 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:45,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:45,506 INFO L82 PathProgramCache]: Analyzing trace with hash 448613391, now seen corresponding path program 1 times [2020-10-27 19:51:45,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:45,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475752116] [2020-10-27 19:51:45,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:45,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:45,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:48,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:48,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:51:48,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:51:48,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2590 [2020-10-27 19:51:48,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 19:51:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:51:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 19:51:48,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:49,891 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 280 DAG size of output: 56 [2020-10-27 19:51:51,272 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 280 DAG size of output: 57 [2020-10-27 19:51:51,811 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 34 [2020-10-27 19:51:52,421 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 42 [2020-10-27 19:51:52,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:52,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:52,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:52,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:52,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:52,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 19:51:52,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:52,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:51:52,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:52,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:51:52,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:52,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:51:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:52,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:53,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:53,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:51:53,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:53,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-27 19:51:53,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 19:51:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:51:53,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:54,387 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 56 [2020-10-27 19:51:54,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:54,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:54,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:54,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:51:54,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:54,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-27 19:51:54,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 19:51:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:51:54,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:56,121 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 90 [2020-10-27 19:51:56,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:51:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:56,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:56,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:56,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:51:56,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:56,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-27 19:51:56,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:51:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:51:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:56,856 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2020-10-27 19:51:57,517 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 86 [2020-10-27 19:51:57,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:57,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:57,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:57,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:57,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 19:51:57,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:57,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:51:57,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:57,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:51:57,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:58,049 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2020-10-27 19:51:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:58,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475752116] [2020-10-27 19:51:58,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:58,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-10-27 19:51:58,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731453832] [2020-10-27 19:51:58,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 19:51:58,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:58,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 19:51:58,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2020-10-27 19:51:58,131 INFO L87 Difference]: Start difference. First operand 292 states and 353 transitions. Second operand 22 states. [2020-10-27 19:51:58,429 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 54 [2020-10-27 19:51:58,831 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-10-27 19:51:59,169 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-27 19:51:59,498 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-27 19:52:00,006 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 19:52:00,352 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 19:52:00,629 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 19:52:01,551 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 126 [2020-10-27 19:52:01,943 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-27 19:52:02,186 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 19:52:02,663 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 132 [2020-10-27 19:52:03,405 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 160 [2020-10-27 19:52:04,210 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 172 [2020-10-27 19:52:04,828 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 161 [2020-10-27 19:52:05,389 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 149 [2020-10-27 19:52:06,001 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 155 [2020-10-27 19:52:06,507 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 144 [2020-10-27 19:52:07,049 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 151 [2020-10-27 19:52:10,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:52:10,598 INFO L93 Difference]: Finished difference Result 323 states and 386 transitions. [2020-10-27 19:52:10,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 19:52:10,599 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2020-10-27 19:52:10,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:52:10,603 INFO L225 Difference]: With dead ends: 323 [2020-10-27 19:52:10,603 INFO L226 Difference]: Without dead ends: 318 [2020-10-27 19:52:10,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=271, Invalid=1535, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 19:52:10,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-27 19:52:10,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 292. [2020-10-27 19:52:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-27 19:52:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 352 transitions. [2020-10-27 19:52:10,661 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 352 transitions. Word has length 51 [2020-10-27 19:52:10,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:52:10,662 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 352 transitions. [2020-10-27 19:52:10,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 19:52:10,662 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 352 transitions. [2020-10-27 19:52:10,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 19:52:10,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:52:10,663 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] [2020-10-27 19:52:10,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:52:10,664 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:52:10,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:52:10,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1445890676, now seen corresponding path program 1 times [2020-10-27 19:52:10,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:52:10,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077056469] [2020-10-27 19:52:10,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:52:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:10,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:11,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:11,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 19:52:11,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-27 19:52:11,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 19:52:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:52:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 19:52:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:11,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:52:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:11,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:11,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:11,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:11,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:11,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:52:11,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:52:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:52:11,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:11,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:52:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:11,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:11,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:11,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:52:11,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:11,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-27 19:52:11,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:52:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:11,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:52:11,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:12,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:12,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:12,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:12,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:52:12,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:12,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-27 19:52:12,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:52:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:52:12,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:12,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:52:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:12,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:12,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:12,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:52:12,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:12,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 19:52:12,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:12,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:52:12,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:52:12,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:12,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:12,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:12,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:12,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:12,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:12,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 19:52:12,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:52:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:52:12,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:12,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:52:12,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077056469] [2020-10-27 19:52:12,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:52:12,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-27 19:52:12,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721881559] [2020-10-27 19:52:12,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 19:52:12,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:52:12,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 19:52:12,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-27 19:52:12,896 INFO L87 Difference]: Start difference. First operand 292 states and 352 transitions. Second operand 19 states. [2020-10-27 19:52:17,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:52:17,699 INFO L93 Difference]: Finished difference Result 334 states and 399 transitions. [2020-10-27 19:52:17,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 19:52:17,700 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 54 [2020-10-27 19:52:17,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:52:17,703 INFO L225 Difference]: With dead ends: 334 [2020-10-27 19:52:17,703 INFO L226 Difference]: Without dead ends: 329 [2020-10-27 19:52:17,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=273, Invalid=1449, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 19:52:17,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-27 19:52:17,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 300. [2020-10-27 19:52:17,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-27 19:52:17,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 359 transitions. [2020-10-27 19:52:17,745 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 359 transitions. Word has length 54 [2020-10-27 19:52:17,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:52:17,746 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 359 transitions. [2020-10-27 19:52:17,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 19:52:17,746 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 359 transitions. [2020-10-27 19:52:17,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 19:52:17,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:52:17,748 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] [2020-10-27 19:52:17,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:52:17,748 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:52:17,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:52:17,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1452185530, now seen corresponding path program 1 times [2020-10-27 19:52:17,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:52:17,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917947085] [2020-10-27 19:52:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:52:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:18,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:18,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 19:52:18,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:18,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-10-27 19:52:18,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:18,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 19:52:18,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:52:18,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 19:52:18,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:18,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:52:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:18,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:18,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:18,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:18,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:52:18,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:52:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:52:18,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:18,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:52:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:18,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:19,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:19,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:52:19,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:19,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-27 19:52:19,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:19,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:52:19,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:19,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:52:19,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:19,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:19,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:19,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:19,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:52:19,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:19,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 19:52:19,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:52:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:52:19,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:19,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:52:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:19,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:19,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:19,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:52:19,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:19,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 19:52:19,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:19,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:52:19,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:19,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:52:19,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:20,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:20,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:20,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:20,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:20,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:20,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 19:52:20,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:20,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:52:20,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:20,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:52:20,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:20,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:52:20,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917947085] [2020-10-27 19:52:20,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:52:20,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 19:52:20,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496382896] [2020-10-27 19:52:20,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 19:52:20,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:52:20,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 19:52:20,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-27 19:52:20,200 INFO L87 Difference]: Start difference. First operand 300 states and 359 transitions. Second operand 20 states. [2020-10-27 19:52:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:52:25,734 INFO L93 Difference]: Finished difference Result 329 states and 391 transitions. [2020-10-27 19:52:25,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 19:52:25,738 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2020-10-27 19:52:25,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:52:25,741 INFO L225 Difference]: With dead ends: 329 [2020-10-27 19:52:25,741 INFO L226 Difference]: Without dead ends: 324 [2020-10-27 19:52:25,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=223, Invalid=1337, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 19:52:25,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-27 19:52:25,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 300. [2020-10-27 19:52:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-27 19:52:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 358 transitions. [2020-10-27 19:52:25,782 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 358 transitions. Word has length 57 [2020-10-27 19:52:25,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:52:25,782 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 358 transitions. [2020-10-27 19:52:25,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 19:52:25,782 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 358 transitions. [2020-10-27 19:52:25,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 19:52:25,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:52:25,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:52:25,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:52:25,784 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:52:25,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:52:25,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1930027834, now seen corresponding path program 1 times [2020-10-27 19:52:25,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:52:25,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715421585] [2020-10-27 19:52:25,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:52:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:25,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:28,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:28,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 19:52:28,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:28,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2753 [2020-10-27 19:52:28,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 19:52:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:52:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 19:52:28,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:28,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:52:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:28,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:28,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:28,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:28,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:28,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:52:28,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:52:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:52:28,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:28,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:52:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:28,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:30,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:30,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 19:52:30,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:30,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1624 [2020-10-27 19:52:30,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 19:52:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 19:52:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:30,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:30,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:30,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:30,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:52:30,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:30,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-27 19:52:30,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:30,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:52:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:52:30,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:31,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:52:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:31,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:31,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:31,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:52:31,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:31,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 19:52:31,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:52:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:52:31,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:31,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:31,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:31,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:31,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:31,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:31,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 19:52:31,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:52:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:52:31,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:31,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 19:52:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:31,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:31,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:31,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:52:31,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:31,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-27 19:52:31,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:31,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:52:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:52:31,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:31,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:52:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:31,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:31,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:52:31,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:31,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 19:52:31,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:31,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:52:31,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:31,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:52:31,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:32,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:32,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:32,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:32,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:32,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:32,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 19:52:32,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:32,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:52:32,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:32,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:52:32,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 19:52:32,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715421585] [2020-10-27 19:52:32,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:52:32,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 19:52:32,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445754034] [2020-10-27 19:52:32,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 19:52:32,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:52:32,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 19:52:32,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2020-10-27 19:52:32,423 INFO L87 Difference]: Start difference. First operand 300 states and 358 transitions. Second operand 26 states. [2020-10-27 19:52:33,130 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-27 19:52:33,600 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 19:52:33,970 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-27 19:52:34,865 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-27 19:52:35,482 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 19:52:35,871 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-27 19:52:36,416 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-27 19:52:39,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:52:39,449 INFO L93 Difference]: Finished difference Result 424 states and 507 transitions. [2020-10-27 19:52:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 19:52:39,450 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 63 [2020-10-27 19:52:39,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:52:39,453 INFO L225 Difference]: With dead ends: 424 [2020-10-27 19:52:39,453 INFO L226 Difference]: Without dead ends: 419 [2020-10-27 19:52:39,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=355, Invalid=2195, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 19:52:39,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-10-27 19:52:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 389. [2020-10-27 19:52:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-27 19:52:39,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 467 transitions. [2020-10-27 19:52:39,509 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 467 transitions. Word has length 63 [2020-10-27 19:52:39,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:52:39,509 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 467 transitions. [2020-10-27 19:52:39,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 19:52:39,510 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 467 transitions. [2020-10-27 19:52:39,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 19:52:39,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:52:39,511 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] [2020-10-27 19:52:39,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:52:39,511 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:52:39,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:52:39,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1537962617, now seen corresponding path program 1 times [2020-10-27 19:52:39,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:52:39,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829581366] [2020-10-27 19:52:39,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:52:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:39,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:40,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:40,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 19:52:40,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:40,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-27 19:52:40,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 19:52:40,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:52:40,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 19:52:40,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:40,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:52:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:40,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:40,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:40,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:40,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:52:40,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:40,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:52:40,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:40,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:52:40,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:40,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:52:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:40,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:40,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:40,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:52:40,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:40,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-27 19:52:40,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:52:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:52:40,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:40,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:40,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:41,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:41,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:52:41,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:41,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-27 19:52:41,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:52:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:52:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:41,454 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-27 19:52:41,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:52:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:41,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:41,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:41,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:52:41,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:41,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 19:52:41,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:52:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:52:41,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:41,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:41,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:41,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:41,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:41,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 19:52:41,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:52:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:52:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:52:41,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829581366] [2020-10-27 19:52:41,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:52:41,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 19:52:41,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913514021] [2020-10-27 19:52:41,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 19:52:41,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:52:41,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 19:52:41,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-27 19:52:41,932 INFO L87 Difference]: Start difference. First operand 389 states and 467 transitions. Second operand 20 states. [2020-10-27 19:52:44,496 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 19:52:44,827 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 19:52:47,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:52:47,542 INFO L93 Difference]: Finished difference Result 412 states and 491 transitions. [2020-10-27 19:52:47,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 19:52:47,544 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 60 [2020-10-27 19:52:47,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:52:47,547 INFO L225 Difference]: With dead ends: 412 [2020-10-27 19:52:47,547 INFO L226 Difference]: Without dead ends: 407 [2020-10-27 19:52:47,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=223, Invalid=1337, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 19:52:47,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-27 19:52:47,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 389. [2020-10-27 19:52:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-27 19:52:47,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 466 transitions. [2020-10-27 19:52:47,602 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 466 transitions. Word has length 60 [2020-10-27 19:52:47,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:52:47,602 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 466 transitions. [2020-10-27 19:52:47,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 19:52:47,602 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 466 transitions. [2020-10-27 19:52:47,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 19:52:47,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:52:47,603 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] [2020-10-27 19:52:47,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 19:52:47,604 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:52:47,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:52:47,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1947238649, now seen corresponding path program 1 times [2020-10-27 19:52:47,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:52:47,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74080387] [2020-10-27 19:52:47,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:52:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:47,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:47,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:48,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:48,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 19:52:48,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:52:48,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-10-27 19:52:48,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:52:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 19:52:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:52:48,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:48,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:52:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:48,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:48,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:48,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:48,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:52:48,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:52:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:52:48,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:48,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:52:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:48,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:48,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:48,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:52:48,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:48,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 19:52:48,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:52:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:52:48,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:48,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:48,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:48,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:52:48,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:48,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:52:48,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:52:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:52:48,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:48,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:52:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:48,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:48,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:48,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:52:48,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:48,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:52:48,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:52:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:52:48,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:48,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:49,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:49,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:49,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:49,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:49,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:52:49,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:49,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:52:49,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:49,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:52:49,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:52:49,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:52:49,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74080387] [2020-10-27 19:52:49,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:52:49,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 19:52:49,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080694084] [2020-10-27 19:52:49,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:52:49,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:52:49,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:52:49,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:52:49,024 INFO L87 Difference]: Start difference. First operand 389 states and 466 transitions. Second operand 8 states. [2020-10-27 19:52:50,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:52:50,334 INFO L93 Difference]: Finished difference Result 394 states and 471 transitions. [2020-10-27 19:52:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 19:52:50,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-10-27 19:52:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:52:50,339 INFO L225 Difference]: With dead ends: 394 [2020-10-27 19:52:50,339 INFO L226 Difference]: Without dead ends: 389 [2020-10-27 19:52:50,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:52:50,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-27 19:52:50,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 388. [2020-10-27 19:52:50,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-10-27 19:52:50,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 461 transitions. [2020-10-27 19:52:50,393 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 461 transitions. Word has length 63 [2020-10-27 19:52:50,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:52:50,393 INFO L481 AbstractCegarLoop]: Abstraction has 388 states and 461 transitions. [2020-10-27 19:52:50,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:52:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 461 transitions. [2020-10-27 19:52:50,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 19:52:50,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:52:50,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:52:50,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 19:52:50,395 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:52:50,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:52:50,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1170400281, now seen corresponding path program 1 times [2020-10-27 19:52:50,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:52:50,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112119662] [2020-10-27 19:52:50,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:52:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:50,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:52,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:52,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 19:52:52,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:52,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1927 [2020-10-27 19:52:52,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 19:52:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:52:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 19:52:52,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:52,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:52:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:52,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:52,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:52,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:52,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:52,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:52:52,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:52:52,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:52,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:52:52,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:52,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:52:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:53,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:53,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 19:52:53,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:53,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1106 [2020-10-27 19:52:53,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 19:52:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 19:52:53,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:53,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:54,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:54,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:52:54,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:54,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-27 19:52:54,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:52:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:52:54,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:54,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:52:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:54,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:54,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:54,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:52:54,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:54,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 19:52:54,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:54,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:52:54,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:54,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:52:54,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:54,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:54,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:54,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:54,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:54,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 19:52:54,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:52:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:52:54,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:54,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 19:52:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:54,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:55,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:55,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:52:55,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:55,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 19:52:55,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:55,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:52:55,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:55,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:52:55,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:52:55,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:52:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:55,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:55,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:55,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:52:55,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 19:52:55,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:52:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:52:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:55,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:55,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:55,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:55,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:55,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:55,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 19:52:55,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:52:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:52:55,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 19:52:55,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112119662] [2020-10-27 19:52:55,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:52:55,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 19:52:55,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221825447] [2020-10-27 19:52:55,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 19:52:55,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:52:55,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 19:52:55,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2020-10-27 19:52:55,639 INFO L87 Difference]: Start difference. First operand 388 states and 461 transitions. Second operand 27 states. [2020-10-27 19:52:56,394 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-10-27 19:52:56,877 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 19:52:57,260 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-27 19:52:57,688 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-27 19:52:57,897 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-10-27 19:52:58,054 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-10-27 19:52:58,270 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2020-10-27 19:52:58,607 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2020-10-27 19:52:58,935 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2020-10-27 19:52:59,580 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 19:52:59,794 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-27 19:53:00,006 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-10-27 19:53:00,283 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-27 19:53:01,227 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-27 19:53:01,609 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-27 19:53:06,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:53:06,080 INFO L93 Difference]: Finished difference Result 459 states and 543 transitions. [2020-10-27 19:53:06,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 19:53:06,083 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 66 [2020-10-27 19:53:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:53:06,086 INFO L225 Difference]: With dead ends: 459 [2020-10-27 19:53:06,086 INFO L226 Difference]: Without dead ends: 454 [2020-10-27 19:53:06,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=537, Invalid=3245, Unknown=0, NotChecked=0, Total=3782 [2020-10-27 19:53:06,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-10-27 19:53:06,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 416. [2020-10-27 19:53:06,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-27 19:53:06,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 496 transitions. [2020-10-27 19:53:06,147 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 496 transitions. Word has length 66 [2020-10-27 19:53:06,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:53:06,147 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 496 transitions. [2020-10-27 19:53:06,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 19:53:06,147 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 496 transitions. [2020-10-27 19:53:06,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 19:53:06,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:53:06,148 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] [2020-10-27 19:53:06,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 19:53:06,149 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:53:06,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:53:06,149 INFO L82 PathProgramCache]: Analyzing trace with hash -2108632218, now seen corresponding path program 1 times [2020-10-27 19:53:06,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:53:06,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546494217] [2020-10-27 19:53:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:53:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:06,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:06,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:07,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:07,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 19:53:07,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:53:07,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1273 [2020-10-27 19:53:07,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:07,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:53:07,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 19:53:07,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:53:07,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:07,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:53:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:07,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:07,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:07,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:53:07,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:07,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:53:07,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:53:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:53:07,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:07,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:53:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:07,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:07,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:07,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:53:07,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:07,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 19:53:07,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:53:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:53:07,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:07,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:53:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:07,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:07,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:07,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:53:07,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:07,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 19:53:07,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:07,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:53:07,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:53:07,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:07,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:53:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:07,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:07,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:07,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:53:07,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:07,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:53:07,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:07,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:53:07,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:07,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:53:07,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:07,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:53:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:07,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:07,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:07,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:53:07,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:07,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 19:53:07,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:53:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:53:07,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:53:07,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546494217] [2020-10-27 19:53:07,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:53:07,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 19:53:07,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297411832] [2020-10-27 19:53:07,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:53:07,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:53:07,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:53:07,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:53:07,675 INFO L87 Difference]: Start difference. First operand 416 states and 496 transitions. Second operand 8 states. [2020-10-27 19:53:08,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:53:08,900 INFO L93 Difference]: Finished difference Result 421 states and 501 transitions. [2020-10-27 19:53:08,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 19:53:08,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-10-27 19:53:08,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:53:08,907 INFO L225 Difference]: With dead ends: 421 [2020-10-27 19:53:08,907 INFO L226 Difference]: Without dead ends: 416 [2020-10-27 19:53:08,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:53:08,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-10-27 19:53:08,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 415. [2020-10-27 19:53:08,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-10-27 19:53:08,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 491 transitions. [2020-10-27 19:53:08,971 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 491 transitions. Word has length 66 [2020-10-27 19:53:08,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:53:08,971 INFO L481 AbstractCegarLoop]: Abstraction has 415 states and 491 transitions. [2020-10-27 19:53:08,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:53:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 491 transitions. [2020-10-27 19:53:08,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 19:53:08,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:53:08,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:53:08,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 19:53:08,973 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:53:08,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:53:08,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1102816347, now seen corresponding path program 1 times [2020-10-27 19:53:08,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:53:08,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542839505] [2020-10-27 19:53:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:53:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:09,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:10,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:10,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 19:53:10,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:10,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1916 [2020-10-27 19:53:10,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:10,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 19:53:10,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:53:10,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 19:53:10,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:11,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:53:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:11,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:11,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:11,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:53:11,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:11,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:53:11,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:11,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:53:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:53:11,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:11,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:53:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:11,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:12,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:12,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 19:53:12,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:12,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-10-27 19:53:12,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 19:53:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:12,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 19:53:12,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:12,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:53:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:12,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:12,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:12,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:53:12,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:12,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 19:53:12,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:53:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:53:12,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:13,119 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-27 19:53:13,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:53:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:13,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:13,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:13,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:53:13,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:13,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 19:53:13,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:53:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:53:13,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:13,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:53:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:13,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:13,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:13,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:53:13,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:13,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 19:53:13,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:13,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:53:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:53:13,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:13,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 19:53:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:13,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:13,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:13,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:53:13,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:13,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 19:53:13,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:13,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:53:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:53:13,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:14,283 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-27 19:53:14,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:53:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:14,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:14,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:14,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:53:14,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:14,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 19:53:14,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:53:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:53:14,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:14,989 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-27 19:53:14,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:53:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:15,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:15,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:15,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:53:15,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:15,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 19:53:15,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:15,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:53:15,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:15,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:53:15,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:15,421 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-10-27 19:53:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 19:53:15,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542839505] [2020-10-27 19:53:15,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:53:15,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 19:53:15,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678327403] [2020-10-27 19:53:15,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 19:53:15,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:53:15,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 19:53:15,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2020-10-27 19:53:15,492 INFO L87 Difference]: Start difference. First operand 415 states and 491 transitions. Second operand 28 states. [2020-10-27 19:53:16,364 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-10-27 19:53:16,831 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 19:53:17,281 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 19:53:17,627 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-27 19:53:18,162 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2020-10-27 19:53:18,646 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2020-10-27 19:53:18,953 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-27 19:53:19,873 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-27 19:53:20,192 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-27 19:53:20,583 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 19:53:20,867 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 19:53:21,743 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-27 19:53:25,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:53:25,793 INFO L93 Difference]: Finished difference Result 439 states and 517 transitions. [2020-10-27 19:53:25,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 19:53:25,795 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 69 [2020-10-27 19:53:25,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:53:25,798 INFO L225 Difference]: With dead ends: 439 [2020-10-27 19:53:25,798 INFO L226 Difference]: Without dead ends: 434 [2020-10-27 19:53:25,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=329, Invalid=2427, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 19:53:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-27 19:53:25,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 415. [2020-10-27 19:53:25,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-10-27 19:53:25,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 490 transitions. [2020-10-27 19:53:25,872 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 490 transitions. Word has length 69 [2020-10-27 19:53:25,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:53:25,873 INFO L481 AbstractCegarLoop]: Abstraction has 415 states and 490 transitions. [2020-10-27 19:53:25,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 19:53:25,873 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 490 transitions. [2020-10-27 19:53:25,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 19:53:25,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:53:25,874 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] [2020-10-27 19:53:25,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 19:53:25,874 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:53:25,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:53:25,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1290864496, now seen corresponding path program 1 times [2020-10-27 19:53:25,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:53:25,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483102727] [2020-10-27 19:53:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:53:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:25,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:25,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:26,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:26,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 19:53:26,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:53:26,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 925 [2020-10-27 19:53:26,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:26,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:53:26,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 19:53:26,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:53:26,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:26,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:53:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:26,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:26,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:26,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:53:26,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:26,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 19:53:26,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:26,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:53:26,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:26,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:53:26,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:26,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:53:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:26,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:26,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:53:26,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:26,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:53:26,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:53:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:53:26,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:26,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:53:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:26,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:26,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:26,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:53:26,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:26,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:53:26,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:53:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:53:26,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:26,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:53:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:26,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:26,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:26,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:53:26,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:26,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:53:26,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:26,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:53:26,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:26,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:53:26,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:26,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:53:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:26,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:26,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:26,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:53:26,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:26,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 19:53:26,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:26,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:53:26,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:26,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:53:26,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:53:26,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483102727] [2020-10-27 19:53:26,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:53:26,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:53:26,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133545602] [2020-10-27 19:53:26,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:53:26,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:53:26,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:53:26,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:53:26,971 INFO L87 Difference]: Start difference. First operand 415 states and 490 transitions. Second operand 6 states. [2020-10-27 19:53:27,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:53:27,730 INFO L93 Difference]: Finished difference Result 420 states and 495 transitions. [2020-10-27 19:53:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 19:53:27,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-27 19:53:27,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:53:27,739 INFO L225 Difference]: With dead ends: 420 [2020-10-27 19:53:27,739 INFO L226 Difference]: Without dead ends: 415 [2020-10-27 19:53:27,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:53:27,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-10-27 19:53:27,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 414. [2020-10-27 19:53:27,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-27 19:53:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 485 transitions. [2020-10-27 19:53:27,796 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 485 transitions. Word has length 68 [2020-10-27 19:53:27,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:53:27,796 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 485 transitions. [2020-10-27 19:53:27,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:53:27,796 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 485 transitions. [2020-10-27 19:53:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 19:53:27,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:53:27,797 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:53:27,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 19:53:27,798 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:53:27,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:53:27,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1475050566, now seen corresponding path program 1 times [2020-10-27 19:53:27,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:53:27,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188177833] [2020-10-27 19:53:27,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:53:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:30,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:30,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 19:53:30,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:30,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2637 [2020-10-27 19:53:30,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:30,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 19:53:30,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:53:30,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 19:53:30,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:30,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:53:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:30,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:30,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:30,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:53:30,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:30,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 19:53:30,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:53:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:53:30,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:30,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:53:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:30,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:32,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:32,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 19:53:32,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:32,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1700 [2020-10-27 19:53:32,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 19:53:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 19:53:32,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:32,812 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-10-27 19:53:32,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:53:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:32,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:33,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:33,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:53:33,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:33,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 19:53:33,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:33,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:53:33,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:33,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:53:33,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:33,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:53:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:33,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:33,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:33,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:53:33,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:33,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 19:53:33,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:33,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:53:33,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:33,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:53:33,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:33,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:53:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:33,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:33,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:33,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:53:33,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:33,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 19:53:33,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:53:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:53:33,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:33,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 19:53:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:33,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:33,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:33,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:53:33,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:33,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-27 19:53:33,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:53:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:53:33,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:34,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:53:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:34,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:34,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:34,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:53:34,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:34,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 19:53:34,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:34,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:53:34,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:34,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:53:34,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:34,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:53:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:34,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:34,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:34,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:53:34,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:34,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 19:53:34,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:53:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:53:34,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:34,998 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-27 19:53:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 19:53:35,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188177833] [2020-10-27 19:53:35,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:53:35,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 19:53:35,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685292295] [2020-10-27 19:53:35,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 19:53:35,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:53:35,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 19:53:35,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-10-27 19:53:35,084 INFO L87 Difference]: Start difference. First operand 414 states and 485 transitions. Second operand 27 states. [2020-10-27 19:53:35,567 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-10-27 19:53:36,259 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2020-10-27 19:53:36,642 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 87 [2020-10-27 19:53:36,945 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 66 [2020-10-27 19:53:37,503 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2020-10-27 19:53:37,875 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 19:53:38,156 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 19:53:38,482 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-27 19:53:38,980 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2020-10-27 19:53:39,812 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2020-10-27 19:53:40,498 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-27 19:53:40,892 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 19:53:41,183 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 19:53:41,644 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-27 19:53:42,416 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2020-10-27 19:53:42,749 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2020-10-27 19:53:43,177 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-27 19:53:43,659 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-27 19:53:44,051 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-27 19:53:44,316 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-27 19:53:44,598 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 78 [2020-10-27 19:53:45,196 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 85 [2020-10-27 19:53:45,726 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2020-10-27 19:53:51,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:53:51,537 INFO L93 Difference]: Finished difference Result 452 states and 526 transitions. [2020-10-27 19:53:51,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 19:53:51,539 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 72 [2020-10-27 19:53:51,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:53:51,542 INFO L225 Difference]: With dead ends: 452 [2020-10-27 19:53:51,542 INFO L226 Difference]: Without dead ends: 447 [2020-10-27 19:53:51,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=390, Invalid=3270, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 19:53:51,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-10-27 19:53:51,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 414. [2020-10-27 19:53:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-27 19:53:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 484 transitions. [2020-10-27 19:53:51,633 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 484 transitions. Word has length 72 [2020-10-27 19:53:51,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:53:51,633 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 484 transitions. [2020-10-27 19:53:51,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 19:53:51,633 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 484 transitions. [2020-10-27 19:53:51,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 19:53:51,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:53:51,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:53:51,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 19:53:51,634 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:53:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:53:51,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1271809525, now seen corresponding path program 1 times [2020-10-27 19:53:51,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:53:51,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623218199] [2020-10-27 19:53:51,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:53:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:51,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:53,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:53,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 19:53:53,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:53,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1861 [2020-10-27 19:53:53,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:53,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 19:53:53,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:53:53,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 19:53:53,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:53,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:53:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:53,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:53,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:53,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:53:53,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:53,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:53:53,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:53:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:53:53,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:53,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:53:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:53,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:54,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:54,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 19:53:54,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:54,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-27 19:53:54,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:54,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 19:53:54,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:54,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 19:53:54,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:54,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:53:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:55,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:55,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:55,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:53:55,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 19:53:55,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:53:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:53:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:55,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:53:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:55,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:55,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:55,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:53:55,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:55,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 19:53:55,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:55,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:53:55,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:55,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:53:55,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:55,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:53:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:55,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:55,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:55,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:53:55,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:55,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:53:55,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:53:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:53:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:53:55,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:55,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 19:53:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:55,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:55,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:55,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:53:55,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:55,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 19:53:55,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:53:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:53:55,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:56,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:53:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:56,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:56,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:56,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:53:56,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:56,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 19:53:56,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:56,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:53:56,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:56,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:53:56,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:56,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:53:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:53:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:53:56,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:53:56,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:53:56,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:53:56,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:53:56,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:53:56,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:53:56,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:53:56,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:53:56,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:53:56,349 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 19:53:56,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623218199] [2020-10-27 19:53:56,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:53:56,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 19:53:56,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27210934] [2020-10-27 19:53:56,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 19:53:56,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:53:56,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 19:53:56,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2020-10-27 19:53:56,351 INFO L87 Difference]: Start difference. First operand 414 states and 484 transitions. Second operand 27 states. [2020-10-27 19:53:57,226 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-27 19:53:57,848 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-27 19:53:58,016 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 19:53:58,258 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-27 19:53:58,471 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-27 19:53:59,505 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-27 19:54:00,961 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-27 19:54:04,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:54:04,315 INFO L93 Difference]: Finished difference Result 435 states and 507 transitions. [2020-10-27 19:54:04,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 19:54:04,317 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 75 [2020-10-27 19:54:04,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:54:04,320 INFO L225 Difference]: With dead ends: 435 [2020-10-27 19:54:04,320 INFO L226 Difference]: Without dead ends: 430 [2020-10-27 19:54:04,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=463, Invalid=2729, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 19:54:04,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-27 19:54:04,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 414. [2020-10-27 19:54:04,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-27 19:54:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 483 transitions. [2020-10-27 19:54:04,386 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 483 transitions. Word has length 75 [2020-10-27 19:54:04,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:54:04,387 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 483 transitions. [2020-10-27 19:54:04,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 19:54:04,387 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 483 transitions. [2020-10-27 19:54:04,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 19:54:04,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:54:04,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:54:04,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 19:54:04,389 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:54:04,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:54:04,389 INFO L82 PathProgramCache]: Analyzing trace with hash 437126490, now seen corresponding path program 1 times [2020-10-27 19:54:04,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:54:04,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047783423] [2020-10-27 19:54:04,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:54:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:04,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:05,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:05,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 19:54:05,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:05,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 738 [2020-10-27 19:54:05,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 19:54:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:54:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 19:54:05,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:05,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:54:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:05,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:05,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:54:05,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:05,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:54:05,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:54:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:54:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:54:05,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:05,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:54:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:05,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:05,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:05,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:54:05,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 19:54:05,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:05,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:54:05,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:54:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:54:05,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:05,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:54:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:05,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:05,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:05,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:54:05,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:05,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 19:54:05,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:54:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:54:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:54:05,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:06,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:54:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:06,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:06,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:06,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:54:06,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:06,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 19:54:06,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:54:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:54:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:54:06,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:06,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:54:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:06,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:06,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:06,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:54:06,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:06,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 19:54:06,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:06,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:54:06,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:54:06,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:54:06,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:54:06,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047783423] [2020-10-27 19:54:06,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:54:06,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 19:54:06,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138933851] [2020-10-27 19:54:06,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 19:54:06,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:54:06,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 19:54:06,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-27 19:54:06,657 INFO L87 Difference]: Start difference. First operand 414 states and 483 transitions. Second operand 20 states. [2020-10-27 19:54:08,190 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-27 19:54:09,516 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 19:54:10,188 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-27 19:54:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:54:12,566 INFO L93 Difference]: Finished difference Result 436 states and 507 transitions. [2020-10-27 19:54:12,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 19:54:12,567 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 75 [2020-10-27 19:54:12,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:54:12,571 INFO L225 Difference]: With dead ends: 436 [2020-10-27 19:54:12,571 INFO L226 Difference]: Without dead ends: 431 [2020-10-27 19:54:12,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=234, Invalid=1406, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 19:54:12,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-27 19:54:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 414. [2020-10-27 19:54:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-27 19:54:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 482 transitions. [2020-10-27 19:54:12,633 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 482 transitions. Word has length 75 [2020-10-27 19:54:12,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:54:12,633 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 482 transitions. [2020-10-27 19:54:12,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 19:54:12,633 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 482 transitions. [2020-10-27 19:54:12,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 19:54:12,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:54:12,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:54:12,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 19:54:12,635 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:54:12,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:54:12,635 INFO L82 PathProgramCache]: Analyzing trace with hash 30376625, now seen corresponding path program 1 times [2020-10-27 19:54:12,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:54:12,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334563123] [2020-10-27 19:54:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:54:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:12,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:14,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:14,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 19:54:14,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:14,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1835 [2020-10-27 19:54:14,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:14,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 19:54:14,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:54:14,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 19:54:14,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:14,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:54:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:14,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:14,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:14,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:54:14,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:14,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:54:14,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:54:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:54:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:54:14,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:14,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:54:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:14,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:16,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:16,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 19:54:16,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:16,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1125 [2020-10-27 19:54:16,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 19:54:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:54:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 19:54:16,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:16,255 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-10-27 19:54:16,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:54:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:16,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:16,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:16,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:54:16,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:16,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 19:54:16,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:16,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:54:16,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:54:16,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:54:16,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:16,916 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-27 19:54:17,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:54:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:17,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:17,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:17,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:54:17,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:17,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 19:54:17,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:54:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:54:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:54:17,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:17,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:54:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:17,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:17,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:17,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:54:17,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 19:54:17,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:54:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:54:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:54:17,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:17,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 19:54:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:17,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:17,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:17,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:54:17,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:17,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-27 19:54:17,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:54:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:54:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:54:17,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:18,219 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-10-27 19:54:18,456 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-27 19:54:18,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:54:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:18,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:18,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:18,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:54:18,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:18,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 19:54:18,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:18,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:54:18,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:54:18,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:54:18,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:18,908 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-27 19:54:18,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:54:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:18,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:18,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:18,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:54:18,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:18,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 19:54:18,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:18,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:54:18,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:54:18,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:54:18,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:19,278 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-27 19:54:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 19:54:19,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334563123] [2020-10-27 19:54:19,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:54:19,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 19:54:19,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958891571] [2020-10-27 19:54:19,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 19:54:19,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:54:19,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 19:54:19,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2020-10-27 19:54:19,355 INFO L87 Difference]: Start difference. First operand 414 states and 482 transitions. Second operand 28 states. [2020-10-27 19:54:20,351 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-27 19:54:21,151 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 143 [2020-10-27 19:54:21,583 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 19:54:21,946 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 19:54:22,402 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2020-10-27 19:54:22,925 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 103 [2020-10-27 19:54:23,317 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-10-27 19:54:23,634 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2020-10-27 19:54:23,928 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2020-10-27 19:54:24,168 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 58 [2020-10-27 19:54:24,488 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 94 [2020-10-27 19:54:24,988 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2020-10-27 19:54:25,269 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2020-10-27 19:54:25,996 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 129 [2020-10-27 19:54:26,597 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 19:54:26,984 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 19:54:27,300 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 89 [2020-10-27 19:54:28,124 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 99 [2020-10-27 19:54:28,914 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 103 [2020-10-27 19:54:29,407 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-27 19:54:29,891 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 102 [2020-10-27 19:54:30,362 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 19:54:30,657 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 19:54:31,296 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-27 19:54:31,562 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 19:54:32,085 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 90 [2020-10-27 19:54:37,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:54:37,398 INFO L93 Difference]: Finished difference Result 449 states and 520 transitions. [2020-10-27 19:54:37,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 19:54:37,399 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 78 [2020-10-27 19:54:37,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:54:37,408 INFO L225 Difference]: With dead ends: 449 [2020-10-27 19:54:37,408 INFO L226 Difference]: Without dead ends: 444 [2020-10-27 19:54:37,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=618, Invalid=4074, Unknown=0, NotChecked=0, Total=4692 [2020-10-27 19:54:37,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-27 19:54:37,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 414. [2020-10-27 19:54:37,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-27 19:54:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 481 transitions. [2020-10-27 19:54:37,480 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 481 transitions. Word has length 78 [2020-10-27 19:54:37,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:54:37,481 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 481 transitions. [2020-10-27 19:54:37,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 19:54:37,481 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 481 transitions. [2020-10-27 19:54:37,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 19:54:37,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:54:37,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:54:37,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 19:54:37,484 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:54:37,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:54:37,484 INFO L82 PathProgramCache]: Analyzing trace with hash -2051512207, now seen corresponding path program 1 times [2020-10-27 19:54:37,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:54:37,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093057027] [2020-10-27 19:54:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:54:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:37,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:37,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:37,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 19:54:37,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:37,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-27 19:54:37,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:37,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 19:54:37,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:54:37,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 19:54:37,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:38,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:54:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:38,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:38,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:38,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:54:38,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:38,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:54:38,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:54:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:54:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:54:38,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:38,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:54:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:38,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:38,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:38,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:54:38,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:38,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-27 19:54:38,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:54:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:54:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:54:38,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:38,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:54:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:38,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:39,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:39,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:54:39,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:39,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 19:54:39,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:54:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:54:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:54:39,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:39,409 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-27 19:54:39,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:54:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:39,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:39,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:39,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:54:39,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:39,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 19:54:39,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:39,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:54:39,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:54:39,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:54:39,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:39,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:54:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:39,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:39,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:54:39,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 19:54:39,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:54:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:54:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:54:39,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:40,041 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-27 19:54:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:54:40,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093057027] [2020-10-27 19:54:40,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:54:40,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 19:54:40,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71233475] [2020-10-27 19:54:40,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 19:54:40,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:54:40,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 19:54:40,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-27 19:54:40,098 INFO L87 Difference]: Start difference. First operand 414 states and 481 transitions. Second operand 20 states. [2020-10-27 19:54:41,281 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 19:54:41,682 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-27 19:54:42,264 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-27 19:54:42,652 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 19:54:43,213 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-27 19:54:43,820 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 19:54:44,281 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 19:54:45,285 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 19:54:47,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:54:47,800 INFO L93 Difference]: Finished difference Result 428 states and 495 transitions. [2020-10-27 19:54:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 19:54:47,802 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 78 [2020-10-27 19:54:47,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:54:47,806 INFO L225 Difference]: With dead ends: 428 [2020-10-27 19:54:47,806 INFO L226 Difference]: Without dead ends: 423 [2020-10-27 19:54:47,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=240, Invalid=1482, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 19:54:47,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-27 19:54:47,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 414. [2020-10-27 19:54:47,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-27 19:54:47,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 480 transitions. [2020-10-27 19:54:47,861 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 480 transitions. Word has length 78 [2020-10-27 19:54:47,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:54:47,862 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 480 transitions. [2020-10-27 19:54:47,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 19:54:47,862 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 480 transitions. [2020-10-27 19:54:47,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 19:54:47,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:54:47,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:54:47,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 19:54:47,863 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:54:47,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:54:47,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1396346914, now seen corresponding path program 1 times [2020-10-27 19:54:47,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:54:47,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927504177] [2020-10-27 19:54:47,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:54:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:49,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:49,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 19:54:49,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:49,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1803 [2020-10-27 19:54:49,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:49,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 19:54:49,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:54:49,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 19:54:49,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:50,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:54:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:50,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:50,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:50,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:54:50,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:54:50,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:54:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:54:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:54:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:50,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:54:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:50,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:51,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:51,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 19:54:51,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:51,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1246 [2020-10-27 19:54:51,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:51,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 19:54:51,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:54:51,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 19:54:51,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:51,621 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-27 19:54:51,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:54:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking...