/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/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:56:44,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:56:44,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:56:44,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:56:44,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:56:44,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:56:44,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:56:44,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:56:44,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:56:44,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:56:44,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:56:44,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:56:44,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:56:44,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:56:44,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:56:44,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:56:44,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:56:44,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:56:44,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:56:44,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:56:44,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:56:44,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:56:44,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:56:44,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:56:44,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:56:44,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:56:44,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:56:44,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:56:44,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:56:44,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:56:44,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:56:44,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:56:44,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:56:44,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:56:44,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:56:44,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:56:44,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:56:44,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:56:44,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:56:44,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:56:44,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:56:44,447 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 19:56:44,473 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:56:44,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:56:44,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:56:44,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:56:44,475 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:56:44,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:56:44,476 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:56:44,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:56:44,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:56:44,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:56:44,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:56:44,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:56:44,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:56:44,478 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:56:44,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:56:44,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:56:44,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:56:44,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:56:44,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:56:44,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:56:44,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:56:44,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:56:44,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:56:44,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:56:44,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:56:44,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:56:44,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:56:44,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:56:44,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:56:44,482 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:56:44,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:56:44,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:56:44,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:56:44,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:56:44,876 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:56:44,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-10-27 19:56:44,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67c95ad9a/061f1e49c4f444e7b74adcedc9364ad9/FLAGa0c8e9be2 [2020-10-27 19:56:45,699 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:56:45,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-10-27 19:56:45,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67c95ad9a/061f1e49c4f444e7b74adcedc9364ad9/FLAGa0c8e9be2 [2020-10-27 19:56:45,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67c95ad9a/061f1e49c4f444e7b74adcedc9364ad9 [2020-10-27 19:56:45,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:56:46,007 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:56:46,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:56:46,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:56:46,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:56:46,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:56:45" (1/1) ... [2020-10-27 19:56:46,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582354f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:46, skipping insertion in model container [2020-10-27 19:56:46,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:56:45" (1/1) ... [2020-10-27 19:56:46,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:56:46,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:56:46,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:56:46,468 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:56:46,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:56:46,630 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:56:46,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:46 WrapperNode [2020-10-27 19:56:46,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:56:46,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:56:46,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:56:46,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:56:46,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:46" (1/1) ... [2020-10-27 19:56:46,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:46" (1/1) ... [2020-10-27 19:56:46,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:46" (1/1) ... [2020-10-27 19:56:46,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:46" (1/1) ... [2020-10-27 19:56:46,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:46" (1/1) ... [2020-10-27 19:56:46,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:46" (1/1) ... [2020-10-27 19:56:46,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:46" (1/1) ... [2020-10-27 19:56:46,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:56:46,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:56:46,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:56:46,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:56:46,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:46" (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 19:56:46,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:56:46,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:56:46,803 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:56:46,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 19:56:46,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 19:56:46,804 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 19:56:46,804 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-10-27 19:56:46,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:56:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:56:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:56:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 19:56:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 19:56:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:56:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:56:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:56:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 19:56:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 19:56:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 19:56:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 19:56:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 19:56:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 19:56:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 19:56:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 19:56:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 19:56:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 19:56:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 19:56:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 19:56:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 19:56:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 19:56:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 19:56:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 19:56:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 19:56:46,810 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 19:56:46,828 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 19:56:46,828 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 19:56:46,828 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 19:56:46,828 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 19:56:46,828 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 19:56:46,828 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 19:56:46,828 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 19:56:46,829 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 19:56:46,829 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 19:56:46,829 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 19:56:46,829 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 19:56:46,829 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 19:56:46,829 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 19:56:46,829 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 19:56:46,830 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 19:56:46,830 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 19:56:46,830 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 19:56:46,830 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 19:56:46,830 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 19:56:46,831 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 19:56:46,831 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 19:56:46,831 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 19:56:46,832 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 19:56:46,832 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 19:56:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 19:56:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 19:56:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 19:56:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 19:56:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 19:56:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 19:56:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 19:56:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 19:56:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 19:56:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 19:56:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 19:56:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 19:56:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 19:56:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 19:56:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 19:56:46,837 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 19:56:46,837 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 19:56:46,837 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 19:56:46,838 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 19:56:46,838 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 19:56:46,838 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 19:56:46,838 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 19:56:46,838 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:56:46,838 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 19:56:46,838 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 19:56:46,839 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 19:56:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 19:56:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 19:56:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 19:56:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 19:56:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 19:56:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 19:56:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 19:56:46,841 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 19:56:46,841 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 19:56:46,841 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 19:56:46,841 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 19:56:46,841 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 19:56:46,841 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 19:56:46,841 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 19:56:46,842 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 19:56:46,842 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 19:56:46,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 19:56:46,842 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 19:56:46,842 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 19:56:46,842 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 19:56:46,842 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 19:56:46,842 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 19:56:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 19:56:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 19:56:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 19:56:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 19:56:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 19:56:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 19:56:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 19:56:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 19:56:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 19:56:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 19:56:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 19:56:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 19:56:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 19:56:46,846 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 19:56:46,846 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 19:56:46,846 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-10-27 19:56:46,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 19:56:46,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:56:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 19:56:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:56:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 19:56:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:56:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:56:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:56:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:56:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:56:47,226 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 19:56:47,505 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:56:47,505 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 19:56:47,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:56:47 BoogieIcfgContainer [2020-10-27 19:56:47,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:56:47,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:56:47,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:56:47,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:56:47,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:56:45" (1/3) ... [2020-10-27 19:56:47,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13252649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:56:47, skipping insertion in model container [2020-10-27 19:56:47,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:56:46" (2/3) ... [2020-10-27 19:56:47,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13252649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:56:47, skipping insertion in model container [2020-10-27 19:56:47,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:56:47" (3/3) ... [2020-10-27 19:56:47,532 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-10-27 19:56:47,547 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:56:47,552 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:56:47,567 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:56:47,614 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:56:47,614 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:56:47,614 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:56:47,614 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:56:47,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:56:47,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:56:47,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:56:47,615 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:56:47,640 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-10-27 19:56:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 19:56:47,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:56:47,650 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] [2020-10-27 19:56:47,650 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:56:47,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:56:47,661 INFO L82 PathProgramCache]: Analyzing trace with hash 523345448, now seen corresponding path program 1 times [2020-10-27 19:56:47,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:56:47,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447988393] [2020-10-27 19:56:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:56:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:47,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:48,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:48,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:48,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:48,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 19:56:48,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:56:48,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 701 [2020-10-27 19:56:48,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:48,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:48,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 19:56:48,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:48,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 19:56:48,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:56:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:48,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:48,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:48,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:56:48,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:48,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:56:48,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:48,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:56:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:48,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:48,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:56:48,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:56:48,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 19:56:48,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:48,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:48,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:56:48,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:48,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:56:48,777 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 19:56:48,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447988393] [2020-10-27 19:56:48,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:56:48,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:56:48,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109270650] [2020-10-27 19:56:48,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:56:48,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:56:48,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:56:48,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:56:48,805 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 4 states. [2020-10-27 19:56:49,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:56:49,057 INFO L93 Difference]: Finished difference Result 89 states and 128 transitions. [2020-10-27 19:56:49,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:56:49,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-27 19:56:49,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:56:49,069 INFO L225 Difference]: With dead ends: 89 [2020-10-27 19:56:49,069 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 19:56:49,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:56:49,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 19:56:49,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34. [2020-10-27 19:56:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 19:56:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2020-10-27 19:56:49,118 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 22 [2020-10-27 19:56:49,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:56:49,119 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2020-10-27 19:56:49,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:56:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2020-10-27 19:56:49,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 19:56:49,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:56:49,120 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] [2020-10-27 19:56:49,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:56:49,121 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:56:49,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:56:49,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1417062500, now seen corresponding path program 1 times [2020-10-27 19:56:49,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:56:49,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663289304] [2020-10-27 19:56:49,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:56:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:49,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:49,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:49,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 19:56:49,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:49,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 19:56:49,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:49,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:56:49,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:56:49,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:56:49,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:49,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:56:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:49,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:49,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:49,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:56:49,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:49,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:56:49,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:49,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:49,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:49,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:49,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:49,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:56:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:49,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:49,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:49,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:56:49,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:49,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 19:56:49,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:49,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:56:49,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:56:49,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 19:56:49,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:49,348 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 19:56:49,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663289304] [2020-10-27 19:56:49,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:56:49,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 19:56:49,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128389194] [2020-10-27 19:56:49,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:56:49,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:56:49,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:56:49,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:56:49,353 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand 7 states. [2020-10-27 19:56:49,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:56:49,662 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2020-10-27 19:56:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 19:56:49,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-27 19:56:49,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:56:49,663 INFO L225 Difference]: With dead ends: 60 [2020-10-27 19:56:49,664 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 19:56:49,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:56:49,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 19:56:49,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2020-10-27 19:56:49,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 19:56:49,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2020-10-27 19:56:49,682 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 22 [2020-10-27 19:56:49,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:56:49,683 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2020-10-27 19:56:49,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:56:49,684 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2020-10-27 19:56:49,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 19:56:49,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:56:49,685 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] [2020-10-27 19:56:49,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:56:49,685 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:56:49,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:56:49,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1582015078, now seen corresponding path program 1 times [2020-10-27 19:56:49,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:56:49,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238822127] [2020-10-27 19:56:49,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:56:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:49,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:49,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:49,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:49,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 19:56:49,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:56:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 19:56:49,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:49,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:56:49,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 19:56:49,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 19:56:49,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:50,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:56:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:50,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:50,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:50,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:56:50,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:50,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:56:50,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:50,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:50,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:50,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:50,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:50,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:56:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:50,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:50,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:50,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 19:56:50,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:50,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 19:56:50,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:56:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:56:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 19:56:50,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:56:50,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238822127] [2020-10-27 19:56:50,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:56:50,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:56:50,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412590169] [2020-10-27 19:56:50,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:56:50,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:56:50,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:56:50,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:56:50,114 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand 5 states. [2020-10-27 19:56:50,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:56:50,302 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2020-10-27 19:56:50,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:56:50,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-27 19:56:50,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:56:50,304 INFO L225 Difference]: With dead ends: 67 [2020-10-27 19:56:50,304 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 19:56:50,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:56:50,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 19:56:50,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-27 19:56:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 19:56:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-10-27 19:56:50,313 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 29 [2020-10-27 19:56:50,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:56:50,313 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-27 19:56:50,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:56:50,313 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2020-10-27 19:56:50,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 19:56:50,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:56:50,315 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] [2020-10-27 19:56:50,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:56:50,315 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:56:50,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:56:50,316 INFO L82 PathProgramCache]: Analyzing trace with hash 560946724, now seen corresponding path program 1 times [2020-10-27 19:56:50,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:56:50,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471658777] [2020-10-27 19:56:50,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:56:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:50,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:50,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:50,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:50,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:50,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:50,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:53,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:53,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 19:56:53,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 19:56:53,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2898 [2020-10-27 19:56:53,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:53,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:56:53,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 19:56:53,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 19:56:53,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:53,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:56:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:53,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:53,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:53,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:56:53,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:53,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:56:53,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:53,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:53,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:56:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:53,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:53,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:53,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 19:56:53,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:56:53,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 19:56:53,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:53,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:56:53,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:53,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 19:56:53,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:56:53,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471658777] [2020-10-27 19:56:53,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:56:53,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 19:56:53,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329335784] [2020-10-27 19:56:53,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 19:56:53,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:56:53,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 19:56:53,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:56:53,645 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand 11 states. [2020-10-27 19:56:54,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:56:54,100 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2020-10-27 19:56:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 19:56:54,100 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-27 19:56:54,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:56:54,101 INFO L225 Difference]: With dead ends: 72 [2020-10-27 19:56:54,102 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 19:56:54,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-27 19:56:54,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 19:56:54,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2020-10-27 19:56:54,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 19:56:54,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2020-10-27 19:56:54,110 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 29 [2020-10-27 19:56:54,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:56:54,111 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2020-10-27 19:56:54,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 19:56:54,111 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2020-10-27 19:56:54,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 19:56:54,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:56:54,112 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] [2020-10-27 19:56:54,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:56:54,113 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:56:54,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:56:54,113 INFO L82 PathProgramCache]: Analyzing trace with hash 849722545, now seen corresponding path program 1 times [2020-10-27 19:56:54,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:56:54,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812765422] [2020-10-27 19:56:54,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:56:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:54,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:54,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:54,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:55,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:55,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 19:56:55,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:56:55,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1062 [2020-10-27 19:56:55,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 19:56:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 19:56:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 19:56:55,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:55,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:56:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:55,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:55,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:55,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:56:55,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:55,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:56:55,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:55,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:55,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:56:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:55,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:55,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:55,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 19:56:55,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:55,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 19:56:55,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:56:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 19:56:55,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:56:55,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812765422] [2020-10-27 19:56:55,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:56:55,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 19:56:55,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172238334] [2020-10-27 19:56:55,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 19:56:55,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:56:55,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 19:56:55,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:56:55,396 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 11 states. [2020-10-27 19:56:55,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:56:55,851 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2020-10-27 19:56:55,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:56:55,852 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-27 19:56:55,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:56:55,854 INFO L225 Difference]: With dead ends: 82 [2020-10-27 19:56:55,854 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 19:56:55,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-27 19:56:55,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 19:56:55,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 60. [2020-10-27 19:56:55,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 19:56:55,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2020-10-27 19:56:55,865 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 30 [2020-10-27 19:56:55,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:56:55,866 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2020-10-27 19:56:55,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 19:56:55,866 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2020-10-27 19:56:55,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 19:56:55,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:56:55,867 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] [2020-10-27 19:56:55,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:56:55,868 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:56:55,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:56:55,868 INFO L82 PathProgramCache]: Analyzing trace with hash 851569587, now seen corresponding path program 1 times [2020-10-27 19:56:55,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:56:55,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833795973] [2020-10-27 19:56:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:56:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:55,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:56,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:56,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 19:56:56,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:56,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 19:56:56,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:56:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:56:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 19:56:56,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:56,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:56:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:56,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:56,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:56,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:56:56,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:56,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:56:56,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:56:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:56:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:56:56,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:56,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:56:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:56,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:56,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:56:56,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 19:56:56,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:56:56,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 19:56:56,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:56:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:56:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:56:56,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 19:56:56,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:56:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:56:56,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833795973] [2020-10-27 19:56:56,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:56:56,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 19:56:56,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309382699] [2020-10-27 19:56:56,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:56:56,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:56:56,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:56:56,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:56:56,156 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand 8 states. [2020-10-27 19:56:56,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:56:56,415 INFO L93 Difference]: Finished difference Result 80 states and 99 transitions. [2020-10-27 19:56:56,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 19:56:56,416 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-27 19:56:56,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:56:56,417 INFO L225 Difference]: With dead ends: 80 [2020-10-27 19:56:56,417 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 19:56:56,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:56:56,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 19:56:56,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-10-27 19:56:56,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 19:56:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-10-27 19:56:56,425 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 30 [2020-10-27 19:56:56,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:56:56,426 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-10-27 19:56:56,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:56:56,426 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-10-27 19:56:56,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 19:56:56,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:56:56,427 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:56:56,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:56:56,428 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:56:56,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:56:56,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1477512026, now seen corresponding path program 1 times [2020-10-27 19:56:56,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:56:56,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615417064] [2020-10-27 19:56:56,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:56:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:56:56,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:56,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:56,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:56:57,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:00,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:00,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 19:57:00,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:57:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3620 [2020-10-27 19:57:00,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:57:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 19:57:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:57:00,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:00,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:57:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:00,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:00,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:00,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:57:00,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:00,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:57:00,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:00,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:00,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:57:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:00,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:00,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:57:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:00,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:00,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:00,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 19:57:00,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:00,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-27 19:57:00,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:00,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:57:00,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:57:00,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 19:57:00,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:57:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:57:00,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615417064] [2020-10-27 19:57:00,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:57:00,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 19:57:00,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627460728] [2020-10-27 19:57:00,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 19:57:00,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:57:00,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 19:57:00,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-27 19:57:00,516 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 15 states. [2020-10-27 19:57:01,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:57:01,023 INFO L93 Difference]: Finished difference Result 81 states and 107 transitions. [2020-10-27 19:57:01,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 19:57:01,023 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2020-10-27 19:57:01,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:57:01,024 INFO L225 Difference]: With dead ends: 81 [2020-10-27 19:57:01,024 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 19:57:01,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-10-27 19:57:01,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 19:57:01,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-10-27 19:57:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-27 19:57:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2020-10-27 19:57:01,033 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 36 [2020-10-27 19:57:01,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:57:01,033 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2020-10-27 19:57:01,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 19:57:01,033 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2020-10-27 19:57:01,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 19:57:01,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:57:01,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:57:01,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:57:01,035 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:57:01,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:57:01,036 INFO L82 PathProgramCache]: Analyzing trace with hash 297495336, now seen corresponding path program 1 times [2020-10-27 19:57:01,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:57:01,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674760712] [2020-10-27 19:57:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:57:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:01,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:01,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:03,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:03,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 19:57:03,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:57:03,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2367 [2020-10-27 19:57:03,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:03,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:57:03,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 19:57:03,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:57:03,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:57:03,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:57:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:03,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:03,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:03,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:57:03,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:03,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:57:03,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:57:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:03,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:57:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:03,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:03,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:03,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 19:57:03,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:03,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-27 19:57:03,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:57:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:57:03,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 19:57:03,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:57:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:57:04,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674760712] [2020-10-27 19:57:04,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:57:04,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 19:57:04,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245733750] [2020-10-27 19:57:04,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 19:57:04,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:57:04,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 19:57:04,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-27 19:57:04,027 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand 15 states. [2020-10-27 19:57:04,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:57:04,626 INFO L93 Difference]: Finished difference Result 81 states and 106 transitions. [2020-10-27 19:57:04,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 19:57:04,627 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2020-10-27 19:57:04,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:57:04,628 INFO L225 Difference]: With dead ends: 81 [2020-10-27 19:57:04,628 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 19:57:04,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2020-10-27 19:57:04,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 19:57:04,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2020-10-27 19:57:04,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 19:57:04,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2020-10-27 19:57:04,647 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 36 [2020-10-27 19:57:04,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:57:04,650 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2020-10-27 19:57:04,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 19:57:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2020-10-27 19:57:04,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 19:57:04,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:57:04,652 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:57:04,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:57:04,652 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:57:04,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:57:04,652 INFO L82 PathProgramCache]: Analyzing trace with hash 299342378, now seen corresponding path program 1 times [2020-10-27 19:57:04,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:57:04,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182367388] [2020-10-27 19:57:04,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:57:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:04,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:04,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:04,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 19:57:04,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-27 19:57:04,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:57:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:57:04,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 19:57:04,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:04,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:57:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:04,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:04,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:04,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:57:04,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:04,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:57:04,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:04,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:57:04,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:04,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:04,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:57:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:04,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:05,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:05,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 19:57:05,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:05,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 19:57:05,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:05,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:57:05,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:57:05,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 19:57:05,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:57:05,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182367388] [2020-10-27 19:57:05,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:57:05,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 19:57:05,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824466068] [2020-10-27 19:57:05,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 19:57:05,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:57:05,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 19:57:05,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 19:57:05,105 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand 9 states. [2020-10-27 19:57:05,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:57:05,369 INFO L93 Difference]: Finished difference Result 109 states and 138 transitions. [2020-10-27 19:57:05,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 19:57:05,369 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-27 19:57:05,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:57:05,370 INFO L225 Difference]: With dead ends: 109 [2020-10-27 19:57:05,371 INFO L226 Difference]: Without dead ends: 75 [2020-10-27 19:57:05,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-27 19:57:05,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-27 19:57:05,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 66. [2020-10-27 19:57:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 19:57:05,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2020-10-27 19:57:05,384 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 36 [2020-10-27 19:57:05,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:57:05,387 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2020-10-27 19:57:05,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 19:57:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2020-10-27 19:57:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 19:57:05,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:57:05,389 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:57:05,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:57:05,389 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:57:05,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:57:05,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1088680600, now seen corresponding path program 2 times [2020-10-27 19:57:05,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:57:05,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486920669] [2020-10-27 19:57:05,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:57:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:05,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:05,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:05,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 19:57:05,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:05,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-27 19:57:05,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:57:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:57:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 19:57:05,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:05,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:57:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:05,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:05,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:05,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:57:05,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:57:05,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:57:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:05,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:57:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:05,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:06,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:06,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 19:57:06,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:06,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-27 19:57:06,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:57:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:57:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 19:57:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:57:06,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486920669] [2020-10-27 19:57:06,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:57:06,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 19:57:06,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237161181] [2020-10-27 19:57:06,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 19:57:06,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:57:06,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 19:57:06,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 19:57:06,118 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand 10 states. [2020-10-27 19:57:06,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:57:06,389 INFO L93 Difference]: Finished difference Result 116 states and 147 transitions. [2020-10-27 19:57:06,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:57:06,389 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-27 19:57:06,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:57:06,390 INFO L225 Difference]: With dead ends: 116 [2020-10-27 19:57:06,391 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 19:57:06,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-27 19:57:06,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 19:57:06,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 73. [2020-10-27 19:57:06,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-27 19:57:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 91 transitions. [2020-10-27 19:57:06,408 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 91 transitions. Word has length 43 [2020-10-27 19:57:06,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:57:06,410 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 91 transitions. [2020-10-27 19:57:06,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 19:57:06,411 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 91 transitions. [2020-10-27 19:57:06,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 19:57:06,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:57:06,412 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 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 19:57:06,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:57:06,412 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:57:06,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:57:06,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1391912854, now seen corresponding path program 3 times [2020-10-27 19:57:06,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:57:06,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981163] [2020-10-27 19:57:06,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:57:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:06,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:06,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:06,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 19:57:06,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:06,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-27 19:57:06,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:57:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:57:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:57:06,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:07,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:57:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:07,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:07,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:07,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:57:07,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:07,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:57:07,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:07,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:07,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:57:07,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:07,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:07,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:57:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:07,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:07,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:07,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 19:57:07,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:07,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-27 19:57:07,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:57:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:57:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 19:57:07,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:57:07,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981163] [2020-10-27 19:57:07,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:57:07,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 19:57:07,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768256007] [2020-10-27 19:57:07,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 19:57:07,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:57:07,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 19:57:07,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:57:07,493 INFO L87 Difference]: Start difference. First operand 73 states and 91 transitions. Second operand 11 states. [2020-10-27 19:57:07,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:57:07,744 INFO L93 Difference]: Finished difference Result 123 states and 156 transitions. [2020-10-27 19:57:07,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 19:57:07,744 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-27 19:57:07,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:57:07,746 INFO L225 Difference]: With dead ends: 123 [2020-10-27 19:57:07,746 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 19:57:07,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-27 19:57:07,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 19:57:07,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2020-10-27 19:57:07,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 19:57:07,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2020-10-27 19:57:07,754 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 50 [2020-10-27 19:57:07,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:57:07,754 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2020-10-27 19:57:07,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 19:57:07,755 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2020-10-27 19:57:07,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 19:57:07,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:57:07,756 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 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 19:57:07,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 19:57:07,756 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:57:07,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:57:07,757 INFO L82 PathProgramCache]: Analyzing trace with hash 657196840, now seen corresponding path program 4 times [2020-10-27 19:57:07,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:57:07,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284533417] [2020-10-27 19:57:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:57:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:57:07,804 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:57:07,805 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:57:07,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 19:57:07,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:57:07 BoogieIcfgContainer [2020-10-27 19:57:07,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:57:07,834 INFO L168 Benchmark]: Toolchain (without parser) took 21831.70 ms. Allocated memory was 152.0 MB in the beginning and 421.5 MB in the end (delta: 269.5 MB). Free memory was 127.1 MB in the beginning and 258.9 MB in the end (delta: -131.8 MB). Peak memory consumption was 138.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:57:07,834 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:57:07,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 614.83 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 104.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:57:07,836 INFO L168 Benchmark]: Boogie Preprocessor took 86.66 ms. Allocated memory is still 152.0 MB. Free memory was 104.5 MB in the beginning and 101.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:57:07,837 INFO L168 Benchmark]: RCFGBuilder took 788.12 ms. Allocated memory is still 152.0 MB. Free memory was 101.6 MB in the beginning and 95.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. [2020-10-27 19:57:07,837 INFO L168 Benchmark]: TraceAbstraction took 20319.27 ms. Allocated memory was 152.0 MB in the beginning and 421.5 MB in the end (delta: 269.5 MB). Free memory was 94.5 MB in the beginning and 258.9 MB in the end (delta: -164.4 MB). Peak memory consumption was 106.2 MB. Max. memory is 8.0 GB. [2020-10-27 19:57:07,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 614.83 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 104.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.66 ms. Allocated memory is still 152.0 MB. Free memory was 104.5 MB in the beginning and 101.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 788.12 ms. Allocated memory is still 152.0 MB. Free memory was 101.6 MB in the beginning and 95.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 20319.27 ms. Allocated memory was 152.0 MB in the beginning and 421.5 MB in the end (delta: 269.5 MB). Free memory was 94.5 MB in the beginning and 258.9 MB in the end (delta: -164.4 MB). Peak memory consumption was 106.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L599] const int len = 5; [L600] CALL, EXPR dll_create(len) [L579] DLL head = ((void *)0); [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND FALSE !(\read(head)) [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND FALSE !(len > 0) [L596] return head; [L600] RET, EXPR dll_create(len) [L600] DLL head = dll_create(len); [L601] head->next [L601] COND TRUE head->next [L602] EXPR head->data_0 [L602] EXPR 0 != head->data_0 || 0 != head->data_1 [L602] EXPR head->data_1 [L602] EXPR 0 != head->data_0 || 0 != head->data_1 [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L602] EXPR head->data_2 [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L602] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L616] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "dll_nullified-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.2s, OverallIterations: 12, TraceHistogramMax: 5, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 391 SDtfs, 502 SDslu, 1598 SDs, 0 SdLazy, 1917 SolverSat, 138 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 96 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 352 ConstructedInterpolants, 0 QuantifiedInterpolants, 59076 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 6/101 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...