/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:13:17,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:13:17,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:13:17,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:13:17,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:13:17,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:13:17,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:13:17,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:13:17,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:13:17,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:13:17,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:13:17,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:13:17,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:13:17,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:13:17,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:13:17,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:13:17,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:13:17,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:13:17,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:13:17,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:13:17,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:13:17,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:13:17,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:13:17,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:13:17,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 16:13:17,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 16:13:17,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 16:13:17,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 16:13:17,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 16:13:17,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 16:13:17,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 16:13:17,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 16:13:17,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 16:13:17,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 16:13:17,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 16:13:17,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 16:13:17,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 16:13:17,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 16:13:17,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:13:17,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:13:17,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:13:17,311 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 16:13:17,365 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:13:17,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:13:17,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:13:17,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:13:17,371 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:13:17,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:13:17,371 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:13:17,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:13:17,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:13:17,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:13:17,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:13:17,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:13:17,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:13:17,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:13:17,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:13:17,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:13:17,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:13:17,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:13:17,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:13:17,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:13:17,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:13:17,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:13:17,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:13:17,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:13:17,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:13:17,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:13:17,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:13:17,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:13:17,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:13:17,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:13:17,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:13:17,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:13:17,831 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:13:17,831 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:13:17,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2021-02-21 16:13:17,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fbba6a59/02601337feb949b3983beda4f61399e4/FLAG1c269c927 [2021-02-21 16:13:18,608 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:13:18,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i [2021-02-21 16:13:18,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fbba6a59/02601337feb949b3983beda4f61399e4/FLAG1c269c927 [2021-02-21 16:13:18,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fbba6a59/02601337feb949b3983beda4f61399e4 [2021-02-21 16:13:18,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:13:18,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:13:18,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:13:18,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:13:18,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:13:18,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:13:18" (1/1) ... [2021-02-21 16:13:18,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71378f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:18, skipping insertion in model container [2021-02-21 16:13:18,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:13:18" (1/1) ... [2021-02-21 16:13:18,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:13:18,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:13:19,365 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] [2021-02-21 16:13:19,373 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] [2021-02-21 16:13:19,376 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] [2021-02-21 16:13:19,377 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] [2021-02-21 16:13:19,381 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] [2021-02-21 16:13:19,382 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] [2021-02-21 16:13:19,385 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] [2021-02-21 16:13:19,386 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] [2021-02-21 16:13:19,387 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] [2021-02-21 16:13:19,389 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] [2021-02-21 16:13:19,391 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] [2021-02-21 16:13:19,392 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] [2021-02-21 16:13:19,393 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] [2021-02-21 16:13:19,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:13:19,412 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:13:19,450 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] [2021-02-21 16:13:19,453 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[22353,22366] [2021-02-21 16:13:19,456 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] [2021-02-21 16:13:19,457 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] [2021-02-21 16:13:19,460 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] [2021-02-21 16:13:19,462 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] [2021-02-21 16:13:19,464 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] [2021-02-21 16:13:19,465 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[23343,23356] [2021-02-21 16:13:19,467 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] [2021-02-21 16:13:19,468 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[23512,23525] [2021-02-21 16:13:19,470 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] [2021-02-21 16:13:19,472 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] [2021-02-21 16:13:19,473 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] [2021-02-21 16:13:19,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:13:19,534 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:13:19,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:19 WrapperNode [2021-02-21 16:13:19,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:13:19,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:13:19,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:13:19,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:13:19,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:19" (1/1) ... [2021-02-21 16:13:19,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:19" (1/1) ... [2021-02-21 16:13:19,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:19" (1/1) ... [2021-02-21 16:13:19,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:19" (1/1) ... [2021-02-21 16:13:19,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:19" (1/1) ... [2021-02-21 16:13:19,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:19" (1/1) ... [2021-02-21 16:13:19,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:19" (1/1) ... [2021-02-21 16:13:19,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:13:19,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:13:19,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:13:19,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:13:19,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:19" (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 [2021-02-21 16:13:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:13:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:13:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:13:19,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:13:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 16:13:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 16:13:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 16:13:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 16:13:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 16:13:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 16:13:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 16:13:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 16:13:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 16:13:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 16:13:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 16:13:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 16:13:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 16:13:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 16:13:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 16:13:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 16:13:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 16:13:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 16:13:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 16:13:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 16:13:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 16:13:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 16:13:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 16:13:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 16:13:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 16:13:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 16:13:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 16:13:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 16:13:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 16:13:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 16:13:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 16:13:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 16:13:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 16:13:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 16:13:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 16:13:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 16:13:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 16:13:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 16:13:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 16:13:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 16:13:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 16:13:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 16:13:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 16:13:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 16:13:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 16:13:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 16:13:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 16:13:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 16:13:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 16:13:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 16:13:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:13:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 16:13:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 16:13:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 16:13:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-21 16:13:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 16:13:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 16:13:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 16:13:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 16:13:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:13:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 16:13:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 16:13:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 16:13:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 16:13:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 16:13:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 16:13:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 16:13:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 16:13:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 16:13:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 16:13:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 16:13:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 16:13:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 16:13:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 16:13:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 16:13:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 16:13:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 16:13:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 16:13:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 16:13:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 16:13:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 16:13:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 16:13:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 16:13:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 16:13:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 16:13:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 16:13:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 16:13:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 16:13:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 16:13:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 16:13:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 16:13:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 16:13:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 16:13:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 16:13:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 16:13:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 16:13:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 16:13:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 16:13:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 16:13:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 16:13:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 16:13:19,834 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 16:13:19,834 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 16:13:19,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:13:19,835 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:13:19,835 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 16:13:19,835 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 16:13:19,835 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:13:19,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:13:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:13:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:13:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 16:13:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 16:13:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:13:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:13:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:13:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:13:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:13:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:13:20,909 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:13:20,910 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-02-21 16:13:20,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:13:20 BoogieIcfgContainer [2021-02-21 16:13:20,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:13:20,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:13:20,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:13:20,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:13:20,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:13:18" (1/3) ... [2021-02-21 16:13:20,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a88b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:13:20, skipping insertion in model container [2021-02-21 16:13:20,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:19" (2/3) ... [2021-02-21 16:13:20,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a88b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:13:20, skipping insertion in model container [2021-02-21 16:13:20,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:13:20" (3/3) ... [2021-02-21 16:13:20,923 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2021-02-21 16:13:20,934 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:13:20,945 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2021-02-21 16:13:20,974 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-02-21 16:13:21,015 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:13:21,016 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:13:21,016 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:13:21,016 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:13:21,016 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:13:21,017 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:13:21,017 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:13:21,017 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:13:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2021-02-21 16:13:21,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-02-21 16:13:21,056 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:21,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:21,058 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]=== [2021-02-21 16:13:21,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:21,067 INFO L82 PathProgramCache]: Analyzing trace with hash -422041064, now seen corresponding path program 1 times [2021-02-21 16:13:21,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:21,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467309085] [2021-02-21 16:13:21,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:21,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:21,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:21,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:21,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:13:21,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:21,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:21,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:21,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:21,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:21,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467309085] [2021-02-21 16:13:21,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:21,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:13:21,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971055741] [2021-02-21 16:13:21,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:13:21,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:21,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:13:21,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:13:21,397 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2021-02-21 16:13:21,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:21,670 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2021-02-21 16:13:21,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:13:21,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-02-21 16:13:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:21,683 INFO L225 Difference]: With dead ends: 186 [2021-02-21 16:13:21,684 INFO L226 Difference]: Without dead ends: 99 [2021-02-21 16:13:21,688 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 [2021-02-21 16:13:21,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-02-21 16:13:21,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2021-02-21 16:13:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-21 16:13:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2021-02-21 16:13:21,744 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2021-02-21 16:13:21,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:21,745 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2021-02-21 16:13:21,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:13:21,745 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2021-02-21 16:13:21,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-21 16:13:21,746 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:21,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:21,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:13:21,747 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]=== [2021-02-21 16:13:21,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:21,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1671475460, now seen corresponding path program 1 times [2021-02-21 16:13:21,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:21,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478546660] [2021-02-21 16:13:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:21,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:21,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:21,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:21,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:21,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:21,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:21,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:21,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:21,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:21,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478546660] [2021-02-21 16:13:21,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:21,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:13:21,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752083276] [2021-02-21 16:13:21,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:13:21,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:21,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:13:21,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:13:21,867 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 4 states. [2021-02-21 16:13:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:22,074 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-02-21 16:13:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:13:22,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-02-21 16:13:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:22,076 INFO L225 Difference]: With dead ends: 84 [2021-02-21 16:13:22,076 INFO L226 Difference]: Without dead ends: 82 [2021-02-21 16:13:22,077 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 [2021-02-21 16:13:22,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-02-21 16:13:22,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-02-21 16:13:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-21 16:13:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2021-02-21 16:13:22,089 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14 [2021-02-21 16:13:22,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:22,089 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2021-02-21 16:13:22,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:13:22,089 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2021-02-21 16:13:22,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-21 16:13:22,090 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:22,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:22,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:13:22,091 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]=== [2021-02-21 16:13:22,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:22,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1671477382, now seen corresponding path program 1 times [2021-02-21 16:13:22,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:22,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799203079] [2021-02-21 16:13:22,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:22,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:22,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:22,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:22,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 16:13:22,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:22,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:22,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:22,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:22,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:22,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:22,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:22,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799203079] [2021-02-21 16:13:22,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:22,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:13:22,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079829636] [2021-02-21 16:13:22,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:13:22,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:22,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:13:22,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:13:22,233 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 5 states. [2021-02-21 16:13:22,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:22,462 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2021-02-21 16:13:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:13:22,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-02-21 16:13:22,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:22,464 INFO L225 Difference]: With dead ends: 83 [2021-02-21 16:13:22,464 INFO L226 Difference]: Without dead ends: 81 [2021-02-21 16:13:22,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:13:22,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-21 16:13:22,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2021-02-21 16:13:22,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-21 16:13:22,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2021-02-21 16:13:22,473 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 14 [2021-02-21 16:13:22,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:22,474 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2021-02-21 16:13:22,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:13:22,474 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2021-02-21 16:13:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-21 16:13:22,475 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:22,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:22,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:13:22,475 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]=== [2021-02-21 16:13:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:22,476 INFO L82 PathProgramCache]: Analyzing trace with hash -740181574, now seen corresponding path program 1 times [2021-02-21 16:13:22,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:22,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213573141] [2021-02-21 16:13:22,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:22,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:22,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:22,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:22,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:13:22,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:22,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:13:22,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:22,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:13:22,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:22,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:13:22,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:22,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:22,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:22,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:22,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:22,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213573141] [2021-02-21 16:13:22,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:22,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:13:22,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829114337] [2021-02-21 16:13:22,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:13:22,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:22,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:13:22,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:13:22,645 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 6 states. [2021-02-21 16:13:22,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:22,961 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2021-02-21 16:13:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:13:22,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2021-02-21 16:13:22,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:22,964 INFO L225 Difference]: With dead ends: 124 [2021-02-21 16:13:22,964 INFO L226 Difference]: Without dead ends: 120 [2021-02-21 16:13:22,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-21 16:13:22,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-02-21 16:13:22,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 75. [2021-02-21 16:13:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-02-21 16:13:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2021-02-21 16:13:22,974 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 19 [2021-02-21 16:13:22,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:22,974 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2021-02-21 16:13:22,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:13:22,974 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2021-02-21 16:13:22,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-21 16:13:22,975 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:22,975 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] [2021-02-21 16:13:22,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 16:13:22,976 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]=== [2021-02-21 16:13:22,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:22,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1470788107, now seen corresponding path program 1 times [2021-02-21 16:13:22,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:22,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875934218] [2021-02-21 16:13:22,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:23,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:23,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:13:23,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:13:23,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:23,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:23,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:23,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875934218] [2021-02-21 16:13:23,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:23,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:13:23,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498614610] [2021-02-21 16:13:23,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:13:23,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:23,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:13:23,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:13:23,071 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 5 states. [2021-02-21 16:13:23,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:23,316 INFO L93 Difference]: Finished difference Result 134 states and 148 transitions. [2021-02-21 16:13:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:13:23,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2021-02-21 16:13:23,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:23,318 INFO L225 Difference]: With dead ends: 134 [2021-02-21 16:13:23,318 INFO L226 Difference]: Without dead ends: 114 [2021-02-21 16:13:23,319 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 [2021-02-21 16:13:23,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-02-21 16:13:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 74. [2021-02-21 16:13:23,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-21 16:13:23,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2021-02-21 16:13:23,327 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 20 [2021-02-21 16:13:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:23,327 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2021-02-21 16:13:23,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:13:23,328 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2021-02-21 16:13:23,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 16:13:23,328 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:23,329 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] [2021-02-21 16:13:23,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 16:13:23,329 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]=== [2021-02-21 16:13:23,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:23,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1304901536, now seen corresponding path program 1 times [2021-02-21 16:13:23,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:23,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656126603] [2021-02-21 16:13:23,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:23,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:23,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:13:23,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:23,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:23,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:23,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656126603] [2021-02-21 16:13:23,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:23,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:13:23,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718467437] [2021-02-21 16:13:23,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:13:23,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:23,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:13:23,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:13:23,424 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 4 states. [2021-02-21 16:13:23,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:23,582 INFO L93 Difference]: Finished difference Result 139 states and 157 transitions. [2021-02-21 16:13:23,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:13:23,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-02-21 16:13:23,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:23,584 INFO L225 Difference]: With dead ends: 139 [2021-02-21 16:13:23,584 INFO L226 Difference]: Without dead ends: 98 [2021-02-21 16:13:23,585 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 [2021-02-21 16:13:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-02-21 16:13:23,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 77. [2021-02-21 16:13:23,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-21 16:13:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2021-02-21 16:13:23,593 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 24 [2021-02-21 16:13:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:23,594 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2021-02-21 16:13:23,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:13:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2021-02-21 16:13:23,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 16:13:23,595 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:23,595 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] [2021-02-21 16:13:23,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 16:13:23,595 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]=== [2021-02-21 16:13:23,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:23,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1797237457, now seen corresponding path program 1 times [2021-02-21 16:13:23,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:23,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080424678] [2021-02-21 16:13:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:23,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:23,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:13:23,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:23,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:23,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:23,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080424678] [2021-02-21 16:13:23,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:23,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:13:23,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572284694] [2021-02-21 16:13:23,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:13:23,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:23,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:13:23,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:13:23,697 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 4 states. [2021-02-21 16:13:23,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:23,824 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2021-02-21 16:13:23,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:13:23,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-02-21 16:13:23,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:23,826 INFO L225 Difference]: With dead ends: 77 [2021-02-21 16:13:23,826 INFO L226 Difference]: Without dead ends: 75 [2021-02-21 16:13:23,826 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 [2021-02-21 16:13:23,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-02-21 16:13:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-02-21 16:13:23,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-02-21 16:13:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2021-02-21 16:13:23,833 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 25 [2021-02-21 16:13:23,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:23,833 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2021-02-21 16:13:23,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:13:23,834 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2021-02-21 16:13:23,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-21 16:13:23,835 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:23,835 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] [2021-02-21 16:13:23,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 16:13:23,835 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]=== [2021-02-21 16:13:23,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:23,836 INFO L82 PathProgramCache]: Analyzing trace with hash -947223864, now seen corresponding path program 1 times [2021-02-21 16:13:23,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:23,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407370475] [2021-02-21 16:13:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:23,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:23,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:23,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:23,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:23,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:23,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:23,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407370475] [2021-02-21 16:13:23,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:23,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:13:23,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931666161] [2021-02-21 16:13:23,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:13:23,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:23,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:13:23,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:13:23,897 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2021-02-21 16:13:24,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:24,037 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2021-02-21 16:13:24,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:13:24,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2021-02-21 16:13:24,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:24,039 INFO L225 Difference]: With dead ends: 78 [2021-02-21 16:13:24,039 INFO L226 Difference]: Without dead ends: 76 [2021-02-21 16:13:24,039 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 [2021-02-21 16:13:24,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-21 16:13:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-02-21 16:13:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-21 16:13:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2021-02-21 16:13:24,045 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 27 [2021-02-21 16:13:24,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:24,045 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2021-02-21 16:13:24,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:13:24,046 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2021-02-21 16:13:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-21 16:13:24,047 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:24,047 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] [2021-02-21 16:13:24,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 16:13:24,047 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]=== [2021-02-21 16:13:24,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:24,048 INFO L82 PathProgramCache]: Analyzing trace with hash -947221942, now seen corresponding path program 1 times [2021-02-21 16:13:24,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:24,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047778892] [2021-02-21 16:13:24,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:24,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:24,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:24,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:24,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 16:13:24,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:24,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:24,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:24,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:24,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:24,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:24,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:24,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047778892] [2021-02-21 16:13:24,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:24,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:13:24,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351868573] [2021-02-21 16:13:24,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:13:24,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:24,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:13:24,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:13:24,122 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 5 states. [2021-02-21 16:13:24,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:24,308 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2021-02-21 16:13:24,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:13:24,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2021-02-21 16:13:24,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:24,309 INFO L225 Difference]: With dead ends: 77 [2021-02-21 16:13:24,309 INFO L226 Difference]: Without dead ends: 75 [2021-02-21 16:13:24,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:13:24,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-02-21 16:13:24,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2021-02-21 16:13:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-21 16:13:24,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2021-02-21 16:13:24,331 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 27 [2021-02-21 16:13:24,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:24,332 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2021-02-21 16:13:24,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:13:24,332 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2021-02-21 16:13:24,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-21 16:13:24,333 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:24,334 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] [2021-02-21 16:13:24,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 16:13:24,334 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]=== [2021-02-21 16:13:24,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:24,335 INFO L82 PathProgramCache]: Analyzing trace with hash 442870869, now seen corresponding path program 1 times [2021-02-21 16:13:24,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:24,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038587172] [2021-02-21 16:13:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:24,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:24,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:24,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:24,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:13:24,475 WARN L141 QuantifierPusher]: treesize reduction 10, result has 81.1 percent of original size [2021-02-21 16:13:24,476 WARN L147 QuantifierPusher]: treesize reduction 10, result has 81.1 percent of original size 43 [2021-02-21 16:13:24,491 WARN L141 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-02-21 16:13:24,495 WARN L147 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size 39 [2021-02-21 16:13:24,511 WARN L141 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-02-21 16:13:24,512 WARN L147 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size 22 [2021-02-21 16:13:24,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:24,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:13:24,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:24,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:24,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:24,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:24,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:24,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038587172] [2021-02-21 16:13:24,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:24,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 16:13:24,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4157557] [2021-02-21 16:13:24,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 16:13:24,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:24,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 16:13:24,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-21 16:13:24,583 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand 8 states. [2021-02-21 16:13:25,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:25,400 INFO L93 Difference]: Finished difference Result 227 states and 252 transitions. [2021-02-21 16:13:25,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 16:13:25,401 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2021-02-21 16:13:25,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:25,404 INFO L225 Difference]: With dead ends: 227 [2021-02-21 16:13:25,404 INFO L226 Difference]: Without dead ends: 225 [2021-02-21 16:13:25,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-02-21 16:13:25,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-02-21 16:13:25,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 90. [2021-02-21 16:13:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-02-21 16:13:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-02-21 16:13:25,413 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 28 [2021-02-21 16:13:25,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:25,413 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-02-21 16:13:25,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 16:13:25,413 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2021-02-21 16:13:25,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-21 16:13:25,415 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:25,415 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] [2021-02-21 16:13:25,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 16:13:25,415 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]=== [2021-02-21 16:13:25,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:25,416 INFO L82 PathProgramCache]: Analyzing trace with hash 2131814611, now seen corresponding path program 1 times [2021-02-21 16:13:25,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:25,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820841542] [2021-02-21 16:13:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:25,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:25,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:25,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:25,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:13:25,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:25,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-21 16:13:25,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:25,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:25,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:25,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:25,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:25,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820841542] [2021-02-21 16:13:25,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:25,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:13:25,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113476797] [2021-02-21 16:13:25,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:13:25,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:25,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:13:25,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:13:25,480 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand 5 states. [2021-02-21 16:13:25,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:25,813 INFO L93 Difference]: Finished difference Result 199 states and 226 transitions. [2021-02-21 16:13:25,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:13:25,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2021-02-21 16:13:25,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:25,815 INFO L225 Difference]: With dead ends: 199 [2021-02-21 16:13:25,815 INFO L226 Difference]: Without dead ends: 138 [2021-02-21 16:13:25,817 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 [2021-02-21 16:13:25,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-02-21 16:13:25,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 90. [2021-02-21 16:13:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-02-21 16:13:25,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2021-02-21 16:13:25,824 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 28 [2021-02-21 16:13:25,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:25,824 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2021-02-21 16:13:25,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:13:25,824 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2021-02-21 16:13:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-21 16:13:25,826 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:25,826 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] [2021-02-21 16:13:25,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 16:13:25,826 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]=== [2021-02-21 16:13:25,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:25,827 INFO L82 PathProgramCache]: Analyzing trace with hash 543466709, now seen corresponding path program 1 times [2021-02-21 16:13:25,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:25,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960664936] [2021-02-21 16:13:25,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:25,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:25,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:25,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:25,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 16:13:25,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:25,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:13:25,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:25,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:13:25,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:25,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:13:25,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:25,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:25,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:25,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:25,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:25,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960664936] [2021-02-21 16:13:25,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:25,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 16:13:25,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11705723] [2021-02-21 16:13:25,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 16:13:25,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:25,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 16:13:25,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-21 16:13:25,971 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand 7 states. [2021-02-21 16:13:26,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:26,473 INFO L93 Difference]: Finished difference Result 206 states and 234 transitions. [2021-02-21 16:13:26,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 16:13:26,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2021-02-21 16:13:26,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:26,475 INFO L225 Difference]: With dead ends: 206 [2021-02-21 16:13:26,475 INFO L226 Difference]: Without dead ends: 159 [2021-02-21 16:13:26,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-02-21 16:13:26,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-02-21 16:13:26,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 97. [2021-02-21 16:13:26,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-02-21 16:13:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2021-02-21 16:13:26,484 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 28 [2021-02-21 16:13:26,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:26,485 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2021-02-21 16:13:26,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 16:13:26,485 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2021-02-21 16:13:26,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-21 16:13:26,486 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:26,486 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] [2021-02-21 16:13:26,486 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-21 16:13:26,487 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]=== [2021-02-21 16:13:26,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:26,487 INFO L82 PathProgramCache]: Analyzing trace with hash -242151861, now seen corresponding path program 1 times [2021-02-21 16:13:26,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:26,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763687267] [2021-02-21 16:13:26,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:26,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:26,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:26,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:26,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:13:26,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:26,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:26,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:26,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:26,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-21 16:13:26,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763687267] [2021-02-21 16:13:26,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:26,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:13:26,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90244059] [2021-02-21 16:13:26,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:13:26,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:26,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:13:26,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:13:26,581 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 4 states. [2021-02-21 16:13:26,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:26,758 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2021-02-21 16:13:26,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:13:26,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2021-02-21 16:13:26,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:26,759 INFO L225 Difference]: With dead ends: 97 [2021-02-21 16:13:26,759 INFO L226 Difference]: Without dead ends: 95 [2021-02-21 16:13:26,760 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 [2021-02-21 16:13:26,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-02-21 16:13:26,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-02-21 16:13:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-02-21 16:13:26,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2021-02-21 16:13:26,767 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 30 [2021-02-21 16:13:26,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:26,767 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2021-02-21 16:13:26,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:13:26,768 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2021-02-21 16:13:26,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-21 16:13:26,769 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:26,769 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] [2021-02-21 16:13:26,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-21 16:13:26,769 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]=== [2021-02-21 16:13:26,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:26,770 INFO L82 PathProgramCache]: Analyzing trace with hash -569355741, now seen corresponding path program 1 times [2021-02-21 16:13:26,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:26,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988644293] [2021-02-21 16:13:26,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:13:26,787 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:13:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:13:26,802 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:13:26,833 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:13:26,834 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:13:26,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-21 16:13:26,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:13:26 BoogieIcfgContainer [2021-02-21 16:13:26,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:13:26,876 INFO L168 Benchmark]: Toolchain (without parser) took 8012.65 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 104.4 MB in the beginning and 109.8 MB in the end (delta: -5.4 MB). Peak memory consumption was 62.2 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:26,876 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:13:26,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.41 ms. Allocated memory is still 151.0 MB. Free memory was 103.2 MB in the beginning and 111.5 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:26,877 INFO L168 Benchmark]: Boogie Preprocessor took 144.48 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 130.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 2.3 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:26,878 INFO L168 Benchmark]: RCFGBuilder took 1230.67 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.5 MB in the beginning and 157.8 MB in the end (delta: -27.3 MB). Peak memory consumption was 56.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:26,878 INFO L168 Benchmark]: TraceAbstraction took 5960.17 ms. Allocated memory was 181.4 MB in the beginning and 218.1 MB in the end (delta: 36.7 MB). Free memory was 157.3 MB in the beginning and 109.8 MB in the end (delta: 47.5 MB). Peak memory consumption was 84.2 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:26,880 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 658.41 ms. Allocated memory is still 151.0 MB. Free memory was 103.2 MB in the beginning and 111.5 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 144.48 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 130.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 2.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1230.67 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.5 MB in the beginning and 157.8 MB in the end (delta: -27.3 MB). Peak memory consumption was 56.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5960.17 ms. Allocated memory was 181.4 MB in the beginning and 218.1 MB in the end (delta: 36.7 MB). Free memory was 157.3 MB in the beginning and 109.8 MB in the end (delta: 47.5 MB). Peak memory consumption was 84.2 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)); [L1004] list->next = ((void*)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()) [L1006] list->inner = malloc(sizeof(SLL)) [L1006] EXPR list->inner [L1006] list->inner->next = ((void*)0) [L1006] EXPR list->inner [L1006] list->inner->inner = ((void*)0) [L1006] EXPR list->inner [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))) [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()) [L1022] end = ((void*)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 [L1030] int len = 0; [L1031] EXPR end->inner [L1031] SLL* inner = end->inner; [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 [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)) [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) [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, 91 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.8s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1023 SDtfs, 922 SDslu, 1282 SDs, 0 SdLazy, 1763 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred 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: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 373 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 323 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 279 ConstructedInterpolants, 0 QuantifiedInterpolants, 37949 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...