/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:07:57,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:07:57,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:07:57,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 23:07:57,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 23:07:57,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 23:07:57,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 23:07:57,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 23:07:57,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 23:07:57,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 23:07:57,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 23:07:57,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 23:07:57,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:07:57,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:07:57,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:07:57,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:07:57,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:07:57,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:07:57,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:07:57,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:07:57,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:07:57,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:07:57,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:07:57,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:07:57,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 23:07:57,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 23:07:57,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 23:07:57,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 23:07:57,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 23:07:57,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 23:07:57,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 23:07:57,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 23:07:57,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 23:07:57,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 23:07:57,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 23:07:57,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 23:07:57,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 23:07:57,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 23:07:57,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:07:57,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:07:57,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:07:57,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:07:57,416 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:07:57,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:07:57,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:07:57,418 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:07:57,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:07:57,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:07:57,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:07:57,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:07:57,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:07:57,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:07:57,420 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:07:57,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:07:57,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:07:57,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:07:57,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:07:57,421 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:07:57,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:07:57,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:07:57,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:07:57,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:07:57,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:07:57,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:07:57,423 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:07:57,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:07:57,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:07:57,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:07:57,854 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:07:57,856 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:07:57,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2021-02-23 23:07:57,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a0fe333b/52e66413712f419b91905539072ec3e8/FLAG4bc656545 [2021-02-23 23:07:58,651 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:07:58,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i [2021-02-23 23:07:58,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a0fe333b/52e66413712f419b91905539072ec3e8/FLAG4bc656545 [2021-02-23 23:07:58,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a0fe333b/52e66413712f419b91905539072ec3e8 [2021-02-23 23:07:58,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:07:58,992 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:07:58,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:07:58,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:07:59,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:07:59,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:07:58" (1/1) ... [2021-02-23 23:07:59,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4beeb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:07:59, skipping insertion in model container [2021-02-23 23:07:59,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:07:58" (1/1) ... [2021-02-23 23:07:59,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:07:59,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:07:59,411 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[22080,22093] [2021-02-23 23:07:59,430 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[22353,22366] [2021-02-23 23:07:59,435 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[22587,22600] [2021-02-23 23:07:59,436 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[22657,22670] [2021-02-23 23:07:59,441 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[22924,22937] [2021-02-23 23:07:59,443 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23032,23045] [2021-02-23 23:07:59,449 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23263,23276] [2021-02-23 23:07:59,451 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23343,23356] [2021-02-23 23:07:59,453 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23422,23435] [2021-02-23 23:07:59,454 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23512,23525] [2021-02-23 23:07:59,463 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23690,23703] [2021-02-23 23:07:59,465 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23768,23781] [2021-02-23 23:07:59,468 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23845,23858] [2021-02-23 23:07:59,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:07:59,490 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:07:59,540 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[22080,22093] [2021-02-23 23:07:59,542 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[22353,22366] [2021-02-23 23:07:59,545 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[22587,22600] [2021-02-23 23:07:59,546 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[22657,22670] [2021-02-23 23:07:59,549 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[22924,22937] [2021-02-23 23:07:59,550 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23032,23045] [2021-02-23 23:07:59,552 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23263,23276] [2021-02-23 23:07:59,553 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23343,23356] [2021-02-23 23:07:59,554 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23422,23435] [2021-02-23 23:07:59,555 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23512,23525] [2021-02-23 23:07:59,557 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23690,23703] [2021-02-23 23:07:59,558 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23768,23781] [2021-02-23 23:07:59,559 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i[23845,23858] [2021-02-23 23:07:59,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:07:59,620 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:07:59,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:07:59 WrapperNode [2021-02-23 23:07:59,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:07:59,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:07:59,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:07:59,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:07:59,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:07:59" (1/1) ... [2021-02-23 23:07:59,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:07:59" (1/1) ... [2021-02-23 23:07:59,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:07:59" (1/1) ... [2021-02-23 23:07:59,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:07:59" (1/1) ... [2021-02-23 23:07:59,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:07:59" (1/1) ... [2021-02-23 23:07:59,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:07:59" (1/1) ... [2021-02-23 23:07:59,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:07:59" (1/1) ... [2021-02-23 23:07:59,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:07:59,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:07:59,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:07:59,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:07:59,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:07:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-23 23:07:59,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:07:59,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:07:59,851 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:07:59,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:07:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 23:07:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 23:07:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 23:07:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 23:07:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 23:07:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 23:07:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 23:07:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 23:07:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 23:07:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 23:07:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 23:07:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 23:07:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 23:07:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 23:07:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 23:07:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 23:07:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 23:07:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 23:07:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 23:07:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 23:07:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 23:07:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 23:07:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 23:07:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 23:07:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 23:07:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 23:07:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 23:07:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 23:07:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 23:07:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 23:07:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 23:07:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 23:07:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 23:07:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 23:07:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 23:07:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 23:07:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 23:07:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 23:07:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 23:07:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 23:07:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 23:07:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 23:07:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 23:07:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 23:07:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 23:07:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 23:07:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 23:07:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 23:07:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 23:07:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 23:07:59,863 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 23:07:59,863 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 23:07:59,863 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 23:07:59,864 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 23:07:59,864 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-23 23:07:59,865 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 23:07:59,866 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 23:07:59,866 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 23:07:59,866 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 23:07:59,867 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:07:59,867 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 23:07:59,867 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 23:07:59,868 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 23:07:59,868 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 23:07:59,868 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 23:07:59,868 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 23:07:59,868 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 23:07:59,868 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 23:07:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 23:07:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 23:07:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 23:07:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 23:07:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 23:07:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 23:07:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 23:07:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 23:07:59,870 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 23:07:59,870 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 23:07:59,870 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 23:07:59,870 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 23:07:59,870 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 23:07:59,870 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 23:07:59,870 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 23:07:59,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 23:07:59,871 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 23:07:59,871 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 23:07:59,871 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 23:07:59,871 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 23:07:59,871 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 23:07:59,871 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 23:07:59,871 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 23:07:59,872 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 23:07:59,872 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 23:07:59,872 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 23:07:59,872 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 23:07:59,872 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 23:07:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 23:07:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 23:07:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 23:07:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 23:07:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 23:07:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 23:07:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 23:07:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:07:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:07:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 23:07:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 23:07:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:07:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:07:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:07:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 23:07:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 23:07:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 23:07:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:07:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:07:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:07:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:07:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:07:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:08:00,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:08:00,758 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-02-23 23:08:00,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:08:00 BoogieIcfgContainer [2021-02-23 23:08:00,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:08:00,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:08:00,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:08:00,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:08:00,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:07:58" (1/3) ... [2021-02-23 23:08:00,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456e4016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:08:00, skipping insertion in model container [2021-02-23 23:08:00,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:07:59" (2/3) ... [2021-02-23 23:08:00,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456e4016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:08:00, skipping insertion in model container [2021-02-23 23:08:00,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:08:00" (3/3) ... [2021-02-23 23:08:00,779 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2021-02-23 23:08:00,787 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:08:00,793 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2021-02-23 23:08:00,817 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-02-23 23:08:00,858 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:08:00,859 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:08:00,859 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:08:00,859 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:08:00,860 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:08:00,860 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:08:00,860 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:08:00,861 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:08:00,898 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2021-02-23 23:08:00,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-23 23:08:00,915 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:00,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:00,917 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:00,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:00,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1375890334, now seen corresponding path program 1 times [2021-02-23 23:08:00,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:00,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945405721] [2021-02-23 23:08:00,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:01,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:01,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:01,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:01,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:01,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:01,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:01,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:01,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:01,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:01,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:01,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:01,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945405721] [2021-02-23 23:08:01,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:01,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 23:08:01,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617161614] [2021-02-23 23:08:01,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 23:08:01,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:01,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 23:08:01,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 23:08:01,327 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 5 states. [2021-02-23 23:08:01,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:01,784 INFO L93 Difference]: Finished difference Result 376 states and 492 transitions. [2021-02-23 23:08:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 23:08:01,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-02-23 23:08:01,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:01,799 INFO L225 Difference]: With dead ends: 376 [2021-02-23 23:08:01,799 INFO L226 Difference]: Without dead ends: 198 [2021-02-23 23:08:01,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:08:01,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-02-23 23:08:01,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 168. [2021-02-23 23:08:01,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2021-02-23 23:08:01,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 177 transitions. [2021-02-23 23:08:01,875 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 177 transitions. Word has length 17 [2021-02-23 23:08:01,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:01,875 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 177 transitions. [2021-02-23 23:08:01,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 23:08:01,875 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 177 transitions. [2021-02-23 23:08:01,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-23 23:08:01,880 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:01,880 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] [2021-02-23 23:08:01,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:08:01,882 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:01,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:01,883 INFO L82 PathProgramCache]: Analyzing trace with hash -590767728, now seen corresponding path program 1 times [2021-02-23 23:08:01,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:01,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301124930] [2021-02-23 23:08:01,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:01,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:01,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:01,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:01,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:02,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:02,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:02,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:02,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:02,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:02,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301124930] [2021-02-23 23:08:02,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:02,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:08:02,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783609149] [2021-02-23 23:08:02,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:08:02,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:02,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:08:02,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:02,063 INFO L87 Difference]: Start difference. First operand 168 states and 177 transitions. Second operand 4 states. [2021-02-23 23:08:02,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:02,389 INFO L93 Difference]: Finished difference Result 174 states and 183 transitions. [2021-02-23 23:08:02,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 23:08:02,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2021-02-23 23:08:02,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:02,392 INFO L225 Difference]: With dead ends: 174 [2021-02-23 23:08:02,392 INFO L226 Difference]: Without dead ends: 169 [2021-02-23 23:08:02,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-02-23 23:08:02,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-02-23 23:08:02,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2021-02-23 23:08:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 178 transitions. [2021-02-23 23:08:02,432 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 178 transitions. Word has length 29 [2021-02-23 23:08:02,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:02,433 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 178 transitions. [2021-02-23 23:08:02,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:08:02,435 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 178 transitions. [2021-02-23 23:08:02,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-23 23:08:02,441 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:02,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:02,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:08:02,442 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:02,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:02,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1889053171, now seen corresponding path program 1 times [2021-02-23 23:08:02,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:02,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792861466] [2021-02-23 23:08:02,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:02,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:02,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:02,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:02,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:02,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:02,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:08:02,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:02,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:02,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:02,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:02,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:02,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:02,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:02,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:02,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:02,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:02,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:02,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792861466] [2021-02-23 23:08:02,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:02,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 23:08:02,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823490464] [2021-02-23 23:08:02,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:08:02,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:02,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:08:02,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:08:02,606 INFO L87 Difference]: Start difference. First operand 169 states and 178 transitions. Second operand 8 states. [2021-02-23 23:08:03,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:03,141 INFO L93 Difference]: Finished difference Result 260 states and 275 transitions. [2021-02-23 23:08:03,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 23:08:03,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-02-23 23:08:03,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:03,144 INFO L225 Difference]: With dead ends: 260 [2021-02-23 23:08:03,145 INFO L226 Difference]: Without dead ends: 255 [2021-02-23 23:08:03,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-02-23 23:08:03,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-02-23 23:08:03,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 163. [2021-02-23 23:08:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-02-23 23:08:03,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 172 transitions. [2021-02-23 23:08:03,169 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 172 transitions. Word has length 31 [2021-02-23 23:08:03,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:03,169 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 172 transitions. [2021-02-23 23:08:03,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:08:03,170 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 172 transitions. [2021-02-23 23:08:03,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-02-23 23:08:03,171 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:03,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:03,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:08:03,172 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:03,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:03,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1151103869, now seen corresponding path program 1 times [2021-02-23 23:08:03,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:03,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369391244] [2021-02-23 23:08:03,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:03,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:03,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:03,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:03,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:03,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:03,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:03,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:03,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 23:08:03,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:03,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:03,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:03,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:03,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:03,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:03,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369391244] [2021-02-23 23:08:03,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:03,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:08:03,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300584259] [2021-02-23 23:08:03,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:08:03,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:03,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:08:03,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:08:03,295 INFO L87 Difference]: Start difference. First operand 163 states and 172 transitions. Second operand 6 states. [2021-02-23 23:08:03,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:03,766 INFO L93 Difference]: Finished difference Result 381 states and 403 transitions. [2021-02-23 23:08:03,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 23:08:03,767 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2021-02-23 23:08:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:03,771 INFO L225 Difference]: With dead ends: 381 [2021-02-23 23:08:03,771 INFO L226 Difference]: Without dead ends: 253 [2021-02-23 23:08:03,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:08:03,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-02-23 23:08:03,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 166. [2021-02-23 23:08:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2021-02-23 23:08:03,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 175 transitions. [2021-02-23 23:08:03,852 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 175 transitions. Word has length 37 [2021-02-23 23:08:03,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:03,852 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 175 transitions. [2021-02-23 23:08:03,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:08:03,853 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 175 transitions. [2021-02-23 23:08:03,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-23 23:08:03,857 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:03,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:03,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:08:03,859 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:03,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:03,860 INFO L82 PathProgramCache]: Analyzing trace with hash 670006272, now seen corresponding path program 1 times [2021-02-23 23:08:03,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:03,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042347671] [2021-02-23 23:08:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:03,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:03,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:03,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:03,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:03,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:03,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:03,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:03,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:03,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:03,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:03,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:04,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:04,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:04,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042347671] [2021-02-23 23:08:04,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:04,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:08:04,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552158146] [2021-02-23 23:08:04,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:08:04,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:04,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:08:04,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:08:04,013 INFO L87 Difference]: Start difference. First operand 166 states and 175 transitions. Second operand 6 states. [2021-02-23 23:08:04,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:04,421 INFO L93 Difference]: Finished difference Result 274 states and 289 transitions. [2021-02-23 23:08:04,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 23:08:04,422 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2021-02-23 23:08:04,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:04,424 INFO L225 Difference]: With dead ends: 274 [2021-02-23 23:08:04,424 INFO L226 Difference]: Without dead ends: 242 [2021-02-23 23:08:04,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:08:04,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-02-23 23:08:04,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 165. [2021-02-23 23:08:04,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2021-02-23 23:08:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 174 transitions. [2021-02-23 23:08:04,449 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 174 transitions. Word has length 39 [2021-02-23 23:08:04,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:04,449 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 174 transitions. [2021-02-23 23:08:04,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:08:04,450 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 174 transitions. [2021-02-23 23:08:04,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 23:08:04,451 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:04,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:04,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 23:08:04,452 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:04,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:04,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1831766512, now seen corresponding path program 1 times [2021-02-23 23:08:04,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:04,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465487537] [2021-02-23 23:08:04,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:04,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:04,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:04,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:04,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:04,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:04,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:04,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:04,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:04,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:04,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:04,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:04,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:08:04,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:04,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 23:08:04,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:04,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:08:04,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:04,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:04,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:04,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:04,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:04,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:04,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:04,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:04,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:04,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:04,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465487537] [2021-02-23 23:08:04,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:04,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 23:08:04,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933370184] [2021-02-23 23:08:04,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 23:08:04,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:04,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 23:08:04,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-02-23 23:08:04,712 INFO L87 Difference]: Start difference. First operand 165 states and 174 transitions. Second operand 12 states. [2021-02-23 23:08:05,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:05,599 INFO L93 Difference]: Finished difference Result 290 states and 306 transitions. [2021-02-23 23:08:05,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 23:08:05,599 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2021-02-23 23:08:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:05,602 INFO L225 Difference]: With dead ends: 290 [2021-02-23 23:08:05,602 INFO L226 Difference]: Without dead ends: 286 [2021-02-23 23:08:05,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-02-23 23:08:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-02-23 23:08:05,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 180. [2021-02-23 23:08:05,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2021-02-23 23:08:05,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 190 transitions. [2021-02-23 23:08:05,634 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 190 transitions. Word has length 46 [2021-02-23 23:08:05,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:05,635 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 190 transitions. [2021-02-23 23:08:05,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 23:08:05,635 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 190 transitions. [2021-02-23 23:08:05,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-23 23:08:05,636 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:05,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:05,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 23:08:05,637 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:05,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:05,638 INFO L82 PathProgramCache]: Analyzing trace with hash 2040854509, now seen corresponding path program 1 times [2021-02-23 23:08:05,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:05,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535208427] [2021-02-23 23:08:05,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:05,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:05,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:05,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:05,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:05,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:05,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:05,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:05,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:05,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:05,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535208427] [2021-02-23 23:08:05,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:05,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:08:05,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484932897] [2021-02-23 23:08:05,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:08:05,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:05,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:08:05,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:05,719 INFO L87 Difference]: Start difference. First operand 180 states and 190 transitions. Second operand 4 states. [2021-02-23 23:08:06,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:06,015 INFO L93 Difference]: Finished difference Result 286 states and 305 transitions. [2021-02-23 23:08:06,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 23:08:06,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2021-02-23 23:08:06,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:06,017 INFO L225 Difference]: With dead ends: 286 [2021-02-23 23:08:06,018 INFO L226 Difference]: Without dead ends: 219 [2021-02-23 23:08:06,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:06,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-02-23 23:08:06,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 183. [2021-02-23 23:08:06,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2021-02-23 23:08:06,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2021-02-23 23:08:06,049 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 47 [2021-02-23 23:08:06,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:06,049 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2021-02-23 23:08:06,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:08:06,049 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2021-02-23 23:08:06,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-23 23:08:06,050 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:06,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:06,051 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 23:08:06,051 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:06,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:06,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1539352912, now seen corresponding path program 1 times [2021-02-23 23:08:06,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:06,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784122149] [2021-02-23 23:08:06,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:06,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:06,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:06,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:06,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:06,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:06,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:06,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:06,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:06,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:06,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784122149] [2021-02-23 23:08:06,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:06,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:08:06,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91511201] [2021-02-23 23:08:06,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:08:06,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:06,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:08:06,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:06,124 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand 4 states. [2021-02-23 23:08:06,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:06,404 INFO L93 Difference]: Finished difference Result 183 states and 194 transitions. [2021-02-23 23:08:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 23:08:06,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2021-02-23 23:08:06,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:06,406 INFO L225 Difference]: With dead ends: 183 [2021-02-23 23:08:06,406 INFO L226 Difference]: Without dead ends: 181 [2021-02-23 23:08:06,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:06,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-02-23 23:08:06,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-02-23 23:08:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2021-02-23 23:08:06,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2021-02-23 23:08:06,446 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 49 [2021-02-23 23:08:06,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:06,447 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2021-02-23 23:08:06,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:08:06,447 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2021-02-23 23:08:06,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-23 23:08:06,448 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:06,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:06,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 23:08:06,449 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:06,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:06,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1003431575, now seen corresponding path program 1 times [2021-02-23 23:08:06,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:06,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118197938] [2021-02-23 23:08:06,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:06,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:06,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:06,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:06,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:06,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:06,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:08:06,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:06,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:06,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:06,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:06,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:06,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:06,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:06,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:06,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:06,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:06,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:06,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:06,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:06,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118197938] [2021-02-23 23:08:06,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:06,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 23:08:06,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911519230] [2021-02-23 23:08:06,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 23:08:06,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:06,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 23:08:06,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 23:08:06,622 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand 9 states. [2021-02-23 23:08:07,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:07,315 INFO L93 Difference]: Finished difference Result 372 states and 397 transitions. [2021-02-23 23:08:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 23:08:07,316 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2021-02-23 23:08:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:07,320 INFO L225 Difference]: With dead ends: 372 [2021-02-23 23:08:07,321 INFO L226 Difference]: Without dead ends: 304 [2021-02-23 23:08:07,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-02-23 23:08:07,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-02-23 23:08:07,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 200. [2021-02-23 23:08:07,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-02-23 23:08:07,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 212 transitions. [2021-02-23 23:08:07,358 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 212 transitions. Word has length 53 [2021-02-23 23:08:07,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:07,359 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 212 transitions. [2021-02-23 23:08:07,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 23:08:07,359 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 212 transitions. [2021-02-23 23:08:07,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-23 23:08:07,362 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:07,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:07,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 23:08:07,363 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:07,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:07,363 INFO L82 PathProgramCache]: Analyzing trace with hash 46675779, now seen corresponding path program 1 times [2021-02-23 23:08:07,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:07,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176673697] [2021-02-23 23:08:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:07,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:07,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:07,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:07,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:07,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:07,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:08:07,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:07,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:07,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:07,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:07,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:07,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:07,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:07,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:07,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:07,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:07,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 23:08:07,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176673697] [2021-02-23 23:08:07,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:07,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 23:08:07,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608123480] [2021-02-23 23:08:07,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:08:07,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:07,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:08:07,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:08:07,563 INFO L87 Difference]: Start difference. First operand 200 states and 212 transitions. Second operand 8 states. [2021-02-23 23:08:08,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:08,061 INFO L93 Difference]: Finished difference Result 284 states and 302 transitions. [2021-02-23 23:08:08,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 23:08:08,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2021-02-23 23:08:08,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:08,063 INFO L225 Difference]: With dead ends: 284 [2021-02-23 23:08:08,063 INFO L226 Difference]: Without dead ends: 254 [2021-02-23 23:08:08,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-02-23 23:08:08,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-02-23 23:08:08,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 235. [2021-02-23 23:08:08,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2021-02-23 23:08:08,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 254 transitions. [2021-02-23 23:08:08,116 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 254 transitions. Word has length 58 [2021-02-23 23:08:08,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:08,117 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 254 transitions. [2021-02-23 23:08:08,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:08:08,117 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 254 transitions. [2021-02-23 23:08:08,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-23 23:08:08,118 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:08,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:08,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 23:08:08,119 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:08,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:08,119 INFO L82 PathProgramCache]: Analyzing trace with hash -520604991, now seen corresponding path program 1 times [2021-02-23 23:08:08,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:08,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609828274] [2021-02-23 23:08:08,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:08,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:08,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:08,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:08,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:08,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:08,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:08,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:08,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:08:08,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:08,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 23:08:08,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:08,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:08:08,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:08,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:08:08,387 WARN L141 QuantifierPusher]: treesize reduction 11, result has 76.1 percent of original size [2021-02-23 23:08:08,390 WARN L147 QuantifierPusher]: treesize reduction 11, result has 76.1 percent of original size 35 [2021-02-23 23:08:08,435 WARN L141 QuantifierPusher]: treesize reduction 10, result has 84.4 percent of original size [2021-02-23 23:08:08,437 WARN L147 QuantifierPusher]: treesize reduction 10, result has 84.4 percent of original size 54 [2021-02-23 23:08:08,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:08,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-23 23:08:08,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:08,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 23:08:08,526 WARN L141 QuantifierPusher]: treesize reduction 12, result has 69.2 percent of original size [2021-02-23 23:08:08,527 WARN L147 QuantifierPusher]: treesize reduction 12, result has 69.2 percent of original size 27 [2021-02-23 23:08:08,559 WARN L141 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-02-23 23:08:08,560 WARN L147 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size 22 [2021-02-23 23:08:08,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:08,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:08,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:08,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:08,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:08,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:08,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:08,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609828274] [2021-02-23 23:08:08,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:08,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 23:08:08,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131584950] [2021-02-23 23:08:08,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 23:08:08,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:08,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 23:08:08,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-02-23 23:08:08,672 INFO L87 Difference]: Start difference. First operand 235 states and 254 transitions. Second operand 16 states. [2021-02-23 23:08:11,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:11,853 INFO L93 Difference]: Finished difference Result 662 states and 707 transitions. [2021-02-23 23:08:11,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-02-23 23:08:11,854 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2021-02-23 23:08:11,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:11,860 INFO L225 Difference]: With dead ends: 662 [2021-02-23 23:08:11,860 INFO L226 Difference]: Without dead ends: 659 [2021-02-23 23:08:11,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=470, Invalid=1980, Unknown=0, NotChecked=0, Total=2450 [2021-02-23 23:08:11,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-02-23 23:08:11,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 252. [2021-02-23 23:08:11,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2021-02-23 23:08:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 272 transitions. [2021-02-23 23:08:11,919 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 272 transitions. Word has length 58 [2021-02-23 23:08:11,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:11,920 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 272 transitions. [2021-02-23 23:08:11,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 23:08:11,920 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 272 transitions. [2021-02-23 23:08:11,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-23 23:08:11,924 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:11,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:11,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 23:08:11,925 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:11,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:11,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1730207930, now seen corresponding path program 1 times [2021-02-23 23:08:11,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:11,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067480546] [2021-02-23 23:08:11,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:11,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:11,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:11,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:11,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:11,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:11,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:11,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:11,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:11,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:11,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:11,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067480546] [2021-02-23 23:08:11,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:11,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:08:11,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813484556] [2021-02-23 23:08:11,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:08:11,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:11,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:08:11,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:11,991 INFO L87 Difference]: Start difference. First operand 252 states and 272 transitions. Second operand 4 states. [2021-02-23 23:08:12,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:12,284 INFO L93 Difference]: Finished difference Result 258 states and 278 transitions. [2021-02-23 23:08:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 23:08:12,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2021-02-23 23:08:12,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:12,287 INFO L225 Difference]: With dead ends: 258 [2021-02-23 23:08:12,288 INFO L226 Difference]: Without dead ends: 253 [2021-02-23 23:08:12,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:12,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-02-23 23:08:12,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2021-02-23 23:08:12,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2021-02-23 23:08:12,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 273 transitions. [2021-02-23 23:08:12,353 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 273 transitions. Word has length 60 [2021-02-23 23:08:12,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:12,354 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 273 transitions. [2021-02-23 23:08:12,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:08:12,354 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 273 transitions. [2021-02-23 23:08:12,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 23:08:12,355 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:12,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:12,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 23:08:12,356 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:12,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:12,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1674423261, now seen corresponding path program 1 times [2021-02-23 23:08:12,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:12,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325910192] [2021-02-23 23:08:12,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:12,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:12,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:12,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:08:12,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:12,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:12,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:12,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:12,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:12,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:12,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:12,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325910192] [2021-02-23 23:08:12,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:12,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 23:08:12,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676536799] [2021-02-23 23:08:12,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:08:12,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:12,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:08:12,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:08:12,486 INFO L87 Difference]: Start difference. First operand 253 states and 273 transitions. Second operand 8 states. [2021-02-23 23:08:13,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:13,107 INFO L93 Difference]: Finished difference Result 273 states and 295 transitions. [2021-02-23 23:08:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 23:08:13,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2021-02-23 23:08:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:13,109 INFO L225 Difference]: With dead ends: 273 [2021-02-23 23:08:13,110 INFO L226 Difference]: Without dead ends: 268 [2021-02-23 23:08:13,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-02-23 23:08:13,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-02-23 23:08:13,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 247. [2021-02-23 23:08:13,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2021-02-23 23:08:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 267 transitions. [2021-02-23 23:08:13,162 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 267 transitions. Word has length 62 [2021-02-23 23:08:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:13,162 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 267 transitions. [2021-02-23 23:08:13,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:08:13,162 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 267 transitions. [2021-02-23 23:08:13,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 23:08:13,163 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:13,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:13,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 23:08:13,164 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:13,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:13,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1193557234, now seen corresponding path program 1 times [2021-02-23 23:08:13,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:13,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689765704] [2021-02-23 23:08:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:08:13,191 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:08:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:08:13,216 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:08:13,270 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:08:13,270 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:08:13,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 23:08:13,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:08:13 BoogieIcfgContainer [2021-02-23 23:08:13,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:08:13,346 INFO L168 Benchmark]: Toolchain (without parser) took 14367.39 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 132.9 MB in the beginning and 145.4 MB in the end (delta: -12.5 MB). Peak memory consumption was 158.3 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:13,347 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 157.3 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:08:13,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.08 ms. Allocated memory is still 157.3 MB. Free memory was 131.8 MB in the beginning and 107.3 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:13,353 INFO L168 Benchmark]: Boogie Preprocessor took 104.63 ms. Allocated memory is still 157.3 MB. Free memory was 107.3 MB in the beginning and 139.9 MB in the end (delta: -32.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:13,353 INFO L168 Benchmark]: RCFGBuilder took 1035.53 ms. Allocated memory is still 157.3 MB. Free memory was 139.8 MB in the beginning and 76.2 MB in the end (delta: 63.6 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:13,353 INFO L168 Benchmark]: TraceAbstraction took 12576.94 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 76.2 MB in the beginning and 145.4 MB in the end (delta: -69.1 MB). Peak memory consumption was 100.2 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:13,355 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 157.3 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 623.08 ms. Allocated memory is still 157.3 MB. Free memory was 131.8 MB in the beginning and 107.3 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 104.63 ms. Allocated memory is still 157.3 MB. Free memory was 107.3 MB in the beginning and 139.9 MB in the end (delta: -32.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1035.53 ms. Allocated memory is still 157.3 MB. Free memory was 139.8 MB in the beginning and 76.2 MB in the end (delta: 63.6 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12576.94 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 76.2 MB in the beginning and 145.4 MB in the end (delta: -69.1 MB). Peak memory consumption was 100.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1040]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1003] SLL* list = malloc(sizeof(SLL)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1004] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1005] list->prev = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1006] COND FALSE !(!(list != ((void*)0))) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1006] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1006] list->inner = malloc(sizeof(SLL)) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1006] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1006] list->inner->next = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1006] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1006] list->inner->inner = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1006] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1006] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1006] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1008] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1011] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1022] end = ((void*)0) VAL [end={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1023] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1026] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1028] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1030] int len = 0; VAL [end={-1:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1031] EXPR end->inner VAL [end={-1:0}, end->inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1031] SLL* inner = end->inner; VAL [end={-1:0}, end->inner={-2:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1032] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1034] COND TRUE len == 0 VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1035] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1038] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1039] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1039] COND FALSE !(!(((void*)0) == inner->inner)) VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1040] EXPR inner->next VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1040] COND TRUE !(((void*)0) != inner->next) VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1040] reach_error() VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 193 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.4s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2152 SDtfs, 3523 SDslu, 6136 SDs, 0 SdLazy, 4488 SolverSat, 136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=253occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 979 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 648 NumberOfCodeBlocks, 648 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 573 ConstructedInterpolants, 0 QuantifiedInterpolants, 191631 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 1/1 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...