/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/list-ext3-properties/sll_of_sll_nondet_append-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:59:21,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:59:21,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:59:21,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:59:21,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:59:21,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:59:21,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:59:21,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:59:21,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:59:21,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:59:21,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:59:21,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:59:21,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:59:21,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:59:21,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:59:21,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:59:21,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:59:21,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:59:21,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:59:21,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:59:21,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:59:21,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:59:21,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:59:21,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:59:21,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:59:21,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:59:21,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:59:21,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:59:21,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:59:21,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:59:21,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:59:21,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:59:21,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:59:21,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:59:21,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:59:21,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:59:21,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:59:21,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:59:21,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:59:21,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:59:21,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:59:21,346 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 19:59:21,390 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:59:21,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:59:21,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:59:21,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:59:21,394 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:59:21,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:59:21,395 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:59:21,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:59:21,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:59:21,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:59:21,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:59:21,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:59:21,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:59:21,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:59:21,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:59:21,397 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:59:21,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:59:21,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:59:21,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:59:21,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:59:21,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:59:21,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:59:21,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:59:21,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:59:21,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:59:21,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:59:21,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:59:21,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:59:21,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:59:21,400 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:59:21,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:59:21,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:59:21,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:59:21,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:59:21,858 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:59:21,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-2.i [2020-10-27 19:59:21,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fe6d5071/1da3869b8ed84177bb3cb60e1c6bbce2/FLAGd54d95d34 [2020-10-27 19:59:22,698 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:59:22,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-2.i [2020-10-27 19:59:22,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fe6d5071/1da3869b8ed84177bb3cb60e1c6bbce2/FLAGd54d95d34 [2020-10-27 19:59:22,922 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fe6d5071/1da3869b8ed84177bb3cb60e1c6bbce2 [2020-10-27 19:59:22,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:59:22,932 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:59:22,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:59:22,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:59:22,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:59:22,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:59:22" (1/1) ... [2020-10-27 19:59:22,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5abe4e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:22, skipping insertion in model container [2020-10-27 19:59:22,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:59:22" (1/1) ... [2020-10-27 19:59:22,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:59:22,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:59:23,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:59:23,406 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:59:23,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:59:23,547 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:59:23,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23 WrapperNode [2020-10-27 19:59:23,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:59:23,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:59:23,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:59:23,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:59:23,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (1/1) ... [2020-10-27 19:59:23,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (1/1) ... [2020-10-27 19:59:23,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (1/1) ... [2020-10-27 19:59:23,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (1/1) ... [2020-10-27 19:59:23,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (1/1) ... [2020-10-27 19:59:23,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (1/1) ... [2020-10-27 19:59:23,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (1/1) ... [2020-10-27 19:59:23,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:59:23,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:59:23,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:59:23,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:59:23,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (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 19:59:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:59:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:59:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:59:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 19:59:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 19:59:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 19:59:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-27 19:59:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create_with_sublist [2020-10-27 19:59:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-27 19:59:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2020-10-27 19:59:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_hierarchical_destroy [2020-10-27 19:59:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:59:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:59:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:59:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 19:59:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 19:59:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:59:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:59:23,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:59:23,709 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 19:59:23,709 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 19:59:23,709 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 19:59:23,709 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 19:59:23,709 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 19:59:23,710 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 19:59:23,710 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 19:59:23,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 19:59:23,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 19:59:23,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 19:59:23,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 19:59:23,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 19:59:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 19:59:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 19:59:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 19:59:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 19:59:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 19:59:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 19:59:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 19:59:23,712 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 19:59:23,712 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 19:59:23,712 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 19:59:23,712 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 19:59:23,712 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 19:59:23,712 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 19:59:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 19:59:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 19:59:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 19:59:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 19:59:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 19:59:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 19:59:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 19:59:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 19:59:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 19:59:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 19:59:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 19:59:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 19:59:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 19:59:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 19:59:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 19:59:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 19:59:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 19:59:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 19:59:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 19:59:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 19:59:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 19:59:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 19:59:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 19:59:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 19:59:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 19:59:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 19:59:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 19:59:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 19:59:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 19:59:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 19:59:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 19:59:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 19:59:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 19:59:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 19:59:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 19:59:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 19:59:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 19:59:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 19:59:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 19:59:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:59:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 19:59:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 19:59:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 19:59:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 19:59:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 19:59:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 19:59:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 19:59:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 19:59:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 19:59:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 19:59:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 19:59:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 19:59:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 19:59:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 19:59:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 19:59:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 19:59:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 19:59:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 19:59:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 19:59:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 19:59:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 19:59:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 19:59:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 19:59:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 19:59:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 19:59:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 19:59:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 19:59:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 19:59:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 19:59:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 19:59:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 19:59:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 19:59:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 19:59:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 19:59:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 19:59:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 19:59:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 19:59:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 19:59:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 19:59:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 19:59:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-27 19:59:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 19:59:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 19:59:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure node_create_with_sublist [2020-10-27 19:59:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-27 19:59:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 19:59:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2020-10-27 19:59:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure sll_hierarchical_destroy [2020-10-27 19:59:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:59:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:59:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 19:59:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:59:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:59:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:59:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:59:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:59:24,324 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 19:59:24,599 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:59:24,599 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-27 19:59:24,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:59:24 BoogieIcfgContainer [2020-10-27 19:59:24,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:59:24,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:59:24,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:59:24,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:59:24,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:59:22" (1/3) ... [2020-10-27 19:59:24,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f651950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:59:24, skipping insertion in model container [2020-10-27 19:59:24,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:59:23" (2/3) ... [2020-10-27 19:59:24,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f651950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:59:24, skipping insertion in model container [2020-10-27 19:59:24,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:59:24" (3/3) ... [2020-10-27 19:59:24,610 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-2.i [2020-10-27 19:59:24,622 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:59:24,627 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:59:24,640 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:59:24,667 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:59:24,667 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:59:24,667 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:59:24,668 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:59:24,668 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:59:24,668 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:59:24,668 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:59:24,668 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:59:24,686 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-10-27 19:59:24,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 19:59:24,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:24,694 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] [2020-10-27 19:59:24,695 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:24,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:24,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1942018806, now seen corresponding path program 1 times [2020-10-27 19:59:24,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:24,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647934643] [2020-10-27 19:59:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:24,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:24,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:25,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:25,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:25,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 19:59:25,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:59:25,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-27 19:59:25,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:59:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:59:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:59:25,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:59:25,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:59:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:25,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:25,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:25,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:59:25,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:25,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:59:25,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:25,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:25,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:25,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:25,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:26,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 19:59:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:26,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:26,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:26,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 19:59:26,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:26,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 19:59:26,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:59:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:59:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 19:59:26,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:26,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:59:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:26,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:26,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:26,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 19:59:26,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:26,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 19:59:26,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:59:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:59:26,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:26,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 19:59:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:26,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:26,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:26,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:59:26,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 19:59:26,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:59:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:26,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:59:26,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:26,387 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 19:59:26,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647934643] [2020-10-27 19:59:26,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:59:26,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 19:59:26,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034167047] [2020-10-27 19:59:26,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 19:59:26,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:59:26,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 19:59:26,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:59:26,413 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 11 states. [2020-10-27 19:59:27,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:59:27,052 INFO L93 Difference]: Finished difference Result 163 states and 235 transitions. [2020-10-27 19:59:27,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 19:59:27,054 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-27 19:59:27,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:59:27,065 INFO L225 Difference]: With dead ends: 163 [2020-10-27 19:59:27,066 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 19:59:27,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-27 19:59:27,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 19:59:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2020-10-27 19:59:27,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 19:59:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2020-10-27 19:59:27,124 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 31 [2020-10-27 19:59:27,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:59:27,125 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2020-10-27 19:59:27,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 19:59:27,126 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2020-10-27 19:59:27,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 19:59:27,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:27,128 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] [2020-10-27 19:59:27,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:59:27,129 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:27,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:27,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1921109197, now seen corresponding path program 1 times [2020-10-27 19:59:27,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:27,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636668300] [2020-10-27 19:59:27,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:27,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:27,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:27,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:27,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 19:59:27,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:59:27,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-27 19:59:27,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:59:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:59:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:59:27,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:59:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:27,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:27,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:59:27,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:27,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:59:27,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:27,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:27,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:27,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:27,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:27,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 19:59:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:27,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:27,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:27,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 19:59:27,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:27,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 19:59:27,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:27,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 19:59:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:27,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:59:27,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:59:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:27,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:27,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:27,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 19:59:27,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:27,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 19:59:27,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:27,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:27,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:27,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:27,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:59:28,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 19:59:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:28,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:28,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:28,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:59:28,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:28,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:59:28,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:59:28,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636668300] [2020-10-27 19:59:28,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:59:28,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:59:28,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430142857] [2020-10-27 19:59:28,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:59:28,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:59:28,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:59:28,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:59:28,027 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand 5 states. [2020-10-27 19:59:28,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:59:28,258 INFO L93 Difference]: Finished difference Result 132 states and 162 transitions. [2020-10-27 19:59:28,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 19:59:28,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-27 19:59:28,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:59:28,261 INFO L225 Difference]: With dead ends: 132 [2020-10-27 19:59:28,261 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 19:59:28,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:59:28,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 19:59:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-10-27 19:59:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-27 19:59:28,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2020-10-27 19:59:28,276 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 34 [2020-10-27 19:59:28,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:59:28,277 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2020-10-27 19:59:28,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:59:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2020-10-27 19:59:28,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 19:59:28,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:28,279 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 19:59:28,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:59:28,280 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:28,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:28,280 INFO L82 PathProgramCache]: Analyzing trace with hash 508179537, now seen corresponding path program 1 times [2020-10-27 19:59:28,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:28,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459725652] [2020-10-27 19:59:28,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:28,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:28,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:28,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:29,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:29,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 19:59:29,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:59:29,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1188 [2020-10-27 19:59:29,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:29,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:59:29,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:59:29,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 19:59:29,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:29,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:59:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:29,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:29,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:29,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:59:29,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:29,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:59:29,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:29,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:29,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:29,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 19:59:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:29,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:29,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:29,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:29,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 19:59:29,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:59:29,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-27 19:59:29,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 19:59:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:59:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 19:59:29,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:29,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:59:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:30,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:30,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 19:59:30,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:30,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 19:59:30,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:59:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 19:59:30,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:30,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 19:59:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:30,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:30,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:30,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:59:30,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:30,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 19:59:30,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:30,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:59:30,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:30,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 19:59:30,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:59:30,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459725652] [2020-10-27 19:59:30,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:59:30,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 19:59:30,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759989221] [2020-10-27 19:59:30,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 19:59:30,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:59:30,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 19:59:30,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-27 19:59:30,292 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand 13 states. [2020-10-27 19:59:30,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:59:30,931 INFO L93 Difference]: Finished difference Result 167 states and 212 transitions. [2020-10-27 19:59:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 19:59:30,932 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-10-27 19:59:30,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:59:30,935 INFO L225 Difference]: With dead ends: 167 [2020-10-27 19:59:30,937 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 19:59:30,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-10-27 19:59:30,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 19:59:30,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 80. [2020-10-27 19:59:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 19:59:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2020-10-27 19:59:30,962 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 39 [2020-10-27 19:59:30,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:59:30,962 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2020-10-27 19:59:30,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 19:59:30,963 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2020-10-27 19:59:30,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 19:59:30,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:30,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:59:30,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:59:30,971 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:30,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:30,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1155875671, now seen corresponding path program 1 times [2020-10-27 19:59:30,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:30,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753786441] [2020-10-27 19:59:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:31,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:31,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:31,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:31,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:31,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:34,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:36,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:36,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 19:59:36,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 19:59:36,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 19:59:36,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:36,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:59:36,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 19:59:36,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 19:59:36,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:36,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:59:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:36,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:36,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:36,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:59:36,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:36,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:59:36,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:36,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:36,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:36,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:36,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:36,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 19:59:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:36,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:36,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 19:59:36,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:36,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 19:59:36,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:36,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:36,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:36,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:36,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:36,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:59:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:36,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:36,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:36,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 19:59:36,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:36,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 19:59:36,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:36,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:36,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:36,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:36,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:36,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 19:59:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:36,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:36,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:36,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 19:59:36,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:36,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:59:36,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:36,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 19:59:36,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753786441] [2020-10-27 19:59:36,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:59:36,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:59:36,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933313991] [2020-10-27 19:59:36,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:59:36,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:59:36,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:59:36,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:59:36,175 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand 5 states. [2020-10-27 19:59:36,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:59:36,373 INFO L93 Difference]: Finished difference Result 103 states and 127 transitions. [2020-10-27 19:59:36,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 19:59:36,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-27 19:59:36,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:59:36,375 INFO L225 Difference]: With dead ends: 103 [2020-10-27 19:59:36,375 INFO L226 Difference]: Without dead ends: 83 [2020-10-27 19:59:36,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:59:36,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-27 19:59:36,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-10-27 19:59:36,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 19:59:36,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2020-10-27 19:59:36,387 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 46 [2020-10-27 19:59:36,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:59:36,388 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2020-10-27 19:59:36,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:59:36,388 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2020-10-27 19:59:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 19:59:36,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:36,389 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:59:36,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:59:36,390 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:36,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:36,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1547864712, now seen corresponding path program 1 times [2020-10-27 19:59:36,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:36,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41895962] [2020-10-27 19:59:36,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:36,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:36,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:36,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:36,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:37,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:37,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:41,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:41,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 19:59:41,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 19:59:41,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 19:59:41,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:59:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 19:59:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 19:59:41,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:41,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:59:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:41,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:41,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:41,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:59:41,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:41,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:59:41,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:41,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:41,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:41,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 19:59:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:41,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:41,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:41,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:41,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 19:59:41,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:59:41,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-27 19:59:41,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 19:59:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 19:59:41,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:42,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:59:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:42,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:42,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:42,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 19:59:42,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:42,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 19:59:42,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:42,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:59:42,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:42,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 19:59:42,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:42,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 19:59:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:42,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:42,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:42,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 19:59:42,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:42,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 19:59:42,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:42,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:59:42,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:42,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 19:59:42,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:42,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 19:59:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:42,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:42,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:42,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:59:42,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:42,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:59:42,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:59:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:59:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 19:59:42,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 19:59:42,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41895962] [2020-10-27 19:59:42,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:59:42,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-27 19:59:42,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479600942] [2020-10-27 19:59:42,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 19:59:42,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:59:42,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 19:59:42,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-27 19:59:42,553 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 18 states. [2020-10-27 19:59:44,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:59:44,130 INFO L93 Difference]: Finished difference Result 153 states and 205 transitions. [2020-10-27 19:59:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 19:59:44,130 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 53 [2020-10-27 19:59:44,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:59:44,133 INFO L225 Difference]: With dead ends: 153 [2020-10-27 19:59:44,133 INFO L226 Difference]: Without dead ends: 135 [2020-10-27 19:59:44,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2020-10-27 19:59:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-27 19:59:44,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 98. [2020-10-27 19:59:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-27 19:59:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 124 transitions. [2020-10-27 19:59:44,177 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 124 transitions. Word has length 53 [2020-10-27 19:59:44,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:59:44,177 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 124 transitions. [2020-10-27 19:59:44,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 19:59:44,178 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 124 transitions. [2020-10-27 19:59:44,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 19:59:44,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:44,180 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:59:44,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:59:44,180 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:44,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:44,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1482821539, now seen corresponding path program 1 times [2020-10-27 19:59:44,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:44,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14673409] [2020-10-27 19:59:44,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:44,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:44,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:44,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:45,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:49,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:49,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 19:59:49,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:59:49,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 19:59:49,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 19:59:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 19:59:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 19:59:49,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:49,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:59:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:49,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:49,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:49,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:59:49,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:49,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:59:49,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:49,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:49,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:49,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:49,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:49,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 19:59:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:49,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:49,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:49,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 19:59:49,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:49,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-27 19:59:49,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:49,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 19:59:49,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:49,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 19:59:49,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:49,951 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-27 19:59:50,098 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 41 [2020-10-27 19:59:50,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:59:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:50,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:50,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:50,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 19:59:50,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:50,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 19:59:50,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:50,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:59:50,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:50,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 19:59:50,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:50,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 19:59:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:50,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:50,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:50,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 19:59:50,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:50,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 19:59:50,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:50,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:59:50,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:59:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:59:50,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:50,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 19:59:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:50,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:50,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 19:59:50,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:50,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:59:50,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:59:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:59:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:59:50,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:59:50,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14673409] [2020-10-27 19:59:50,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:59:50,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 19:59:50,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152544876] [2020-10-27 19:59:50,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 19:59:50,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:59:50,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 19:59:50,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-10-27 19:59:50,970 INFO L87 Difference]: Start difference. First operand 98 states and 124 transitions. Second operand 23 states. [2020-10-27 19:59:53,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:59:53,320 INFO L93 Difference]: Finished difference Result 190 states and 261 transitions. [2020-10-27 19:59:53,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 19:59:53,321 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 54 [2020-10-27 19:59:53,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:59:53,325 INFO L225 Difference]: With dead ends: 190 [2020-10-27 19:59:53,326 INFO L226 Difference]: Without dead ends: 159 [2020-10-27 19:59:53,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 19:59:53,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-27 19:59:53,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 127. [2020-10-27 19:59:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-27 19:59:53,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 164 transitions. [2020-10-27 19:59:53,377 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 164 transitions. Word has length 54 [2020-10-27 19:59:53,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:59:53,378 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 164 transitions. [2020-10-27 19:59:53,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 19:59:53,378 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 164 transitions. [2020-10-27 19:59:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 19:59:53,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:53,379 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:59:53,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:59:53,380 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:53,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:53,382 INFO L82 PathProgramCache]: Analyzing trace with hash -533516824, now seen corresponding path program 2 times [2020-10-27 19:59:53,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:53,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642408558] [2020-10-27 19:59:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:53,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:53,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:53,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:55,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:55,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:59:55,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:59:55,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2078 [2020-10-27 19:59:55,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 19:59:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 19:59:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 19:59:55,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:55,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:59:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:55,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:55,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:55,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:59:55,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:55,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:59:55,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:55,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:59:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:59:55,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:55,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 19:59:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:55,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:55,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:55,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 19:59:55,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:55,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 19:59:55,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 19:59:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 19:59:55,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:55,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:59:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:55,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:55,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:55,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 19:59:55,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:55,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 19:59:55,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:59:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 19:59:55,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:55,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 19:59:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:55,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:55,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:55,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 19:59:55,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:55,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 19:59:55,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:59:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 19:59:55,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:56,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 19:59:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:56,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:56,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:59:56,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 19:59:56,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:59:56,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 19:59:56,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:59:56,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:59:56,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:59:56,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 19:59:56,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:59:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:59:56,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642408558] [2020-10-27 19:59:56,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:59:56,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 19:59:56,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029687990] [2020-10-27 19:59:56,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 19:59:56,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:59:56,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 19:59:56,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-27 19:59:56,235 INFO L87 Difference]: Start difference. First operand 127 states and 164 transitions. Second operand 21 states. [2020-10-27 19:59:58,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:59:58,348 INFO L93 Difference]: Finished difference Result 335 states and 463 transitions. [2020-10-27 19:59:58,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 19:59:58,349 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2020-10-27 19:59:58,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:59:58,353 INFO L225 Difference]: With dead ends: 335 [2020-10-27 19:59:58,353 INFO L226 Difference]: Without dead ends: 220 [2020-10-27 19:59:58,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=179, Invalid=1627, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 19:59:58,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-27 19:59:58,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 182. [2020-10-27 19:59:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-27 19:59:58,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 242 transitions. [2020-10-27 19:59:58,397 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 242 transitions. Word has length 55 [2020-10-27 19:59:58,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:59:58,398 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 242 transitions. [2020-10-27 19:59:58,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 19:59:58,398 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 242 transitions. [2020-10-27 19:59:58,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 19:59:58,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:59:58,400 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:59:58,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:59:58,400 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:59:58,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:59:58,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1686238143, now seen corresponding path program 1 times [2020-10-27 19:59:58,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:59:58,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722984532] [2020-10-27 19:59:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:59:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:59:58,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:58,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:58,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:58,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:58,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:59,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:59,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:59:59,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:00,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:00,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:00,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:01,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:01,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:03,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:03,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 20:00:03,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 20:00:03,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 20:00:03,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:03,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 20:00:03,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:00:03,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 20:00:03,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:03,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:03,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:03,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:03,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:03,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:03,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:00:03,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:03,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:03,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:00:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:03,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:04,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:04,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:04,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:04,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:05,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:05,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 20:00:05,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 20:00:05,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1723 [2020-10-27 20:00:05,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 20:00:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:00:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 20:00:05,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0