/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:41:37,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:41:37,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:41:37,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:41:37,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:41:37,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:41:37,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:41:37,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:41:37,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:41:37,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:41:37,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:41:37,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:41:37,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:41:37,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:41:37,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:41:37,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:41:37,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:41:37,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:41:37,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:41:37,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:41:37,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:41:37,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:41:37,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:41:37,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:41:37,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 20:41:37,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 20:41:37,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 20:41:37,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 20:41:37,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 20:41:37,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 20:41:37,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:41:37,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:41:37,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:41:37,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:41:37,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:41:37,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:41:37,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:41:37,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:41:37,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:41:37,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:41:37,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:41:37,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:41:37,592 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:41:37,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:41:37,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:41:37,594 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:41:37,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:41:37,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:41:37,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:41:37,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:41:37,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:41:37,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:41:37,596 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:41:37,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:41:37,596 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:41:37,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:41:37,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:41:37,597 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:41:37,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:41:37,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:41:37,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:41:37,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:41:37,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:41:37,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:41:37,599 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:41:37,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:41:38,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:41:38,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:41:38,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:41:38,035 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:41:38,036 INFO L432 ainManager$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 20:41:38,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a45f405d/829f184353964b3aa1ed1e2463788979/FLAGe5ac7798a [2021-02-21 20:41:38,938 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:41:38,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i [2021-02-21 20:41:38,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a45f405d/829f184353964b3aa1ed1e2463788979/FLAGe5ac7798a [2021-02-21 20:41:39,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a45f405d/829f184353964b3aa1ed1e2463788979 [2021-02-21 20:41:39,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:41:39,153 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:41:39,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:41:39,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:41:39,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:41:39,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:41:39" (1/1) ... [2021-02-21 20:41:39,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e6e51c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:39, skipping insertion in model container [2021-02-21 20:41:39,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:41:39" (1/1) ... [2021-02-21 20:41:39,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:41:39,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:41:39,609 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 20:41:39,616 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 20:41:39,619 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 20:41:39,620 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 20:41:39,623 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 20:41:39,624 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 20:41:39,627 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 20:41:39,628 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 20:41:39,629 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 20:41:39,630 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 20:41:39,632 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 20:41:39,633 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 20:41:39,634 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 20:41:39,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:41:39,647 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:41:39,678 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 20:41:39,681 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 20:41:39,683 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 20:41:39,684 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 20:41:39,686 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 20:41:39,688 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 20:41:39,689 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 20:41:39,690 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 20:41:39,691 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 20:41:39,692 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 20:41:39,694 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 20:41:39,695 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 20:41:39,696 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 20:41:39,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:41:39,824 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:41:39,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:39 WrapperNode [2021-02-21 20:41:39,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:41:39,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:41:39,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:41:39,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:41:39,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:39" (1/1) ... [2021-02-21 20:41:39,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:39" (1/1) ... [2021-02-21 20:41:39,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:39" (1/1) ... [2021-02-21 20:41:39,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:39" (1/1) ... [2021-02-21 20:41:39,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:39" (1/1) ... [2021-02-21 20:41:39,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:39" (1/1) ... [2021-02-21 20:41:39,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:39" (1/1) ... [2021-02-21 20:41:39,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:41:39,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:41:39,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:41:39,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:41:39,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:39" (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 20:41:40,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:41:40,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:41:40,095 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:41:40,095 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:41:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 20:41:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 20:41:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 20:41:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 20:41:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 20:41:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 20:41:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 20:41:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 20:41:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 20:41:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 20:41:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 20:41:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 20:41:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 20:41:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 20:41:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 20:41:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 20:41:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 20:41:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 20:41:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 20:41:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 20:41:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 20:41:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 20:41:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 20:41:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 20:41:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 20:41:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 20:41:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 20:41:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 20:41:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 20:41:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 20:41:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 20:41:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 20:41:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 20:41:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 20:41:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 20:41:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 20:41:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 20:41:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 20:41:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 20:41:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 20:41:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 20:41:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 20:41:40,103 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 20:41:40,103 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 20:41:40,103 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 20:41:40,103 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 20:41:40,103 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 20:41:40,104 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 20:41:40,104 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 20:41:40,104 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 20:41:40,104 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 20:41:40,104 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 20:41:40,104 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 20:41:40,105 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 20:41:40,105 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-21 20:41:40,105 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 20:41:40,105 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 20:41:40,105 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 20:41:40,105 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 20:41:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:41:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 20:41:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 20:41:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 20:41:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 20:41:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 20:41:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 20:41:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 20:41:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 20:41:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 20:41:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 20:41:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 20:41:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 20:41:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 20:41:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 20:41:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 20:41:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 20:41:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 20:41:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 20:41:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 20:41:40,109 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 20:41:40,109 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 20:41:40,109 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 20:41:40,109 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 20:41:40,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 20:41:40,109 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 20:41:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 20:41:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 20:41:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 20:41:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 20:41:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 20:41:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 20:41:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 20:41:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 20:41:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 20:41:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 20:41:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 20:41:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 20:41:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 20:41:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 20:41:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 20:41:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 20:41:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 20:41:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 20:41:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:41:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:41:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 20:41:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 20:41:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:41:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:41:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:41:40,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 20:41:40,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 20:41:40,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 20:41:40,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:41:40,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:41:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:41:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:41:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:41:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:41:41,077 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:41:41,077 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-02-21 20:41:41,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:41:41 BoogieIcfgContainer [2021-02-21 20:41:41,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:41:41,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:41:41,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:41:41,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:41:41,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:41:39" (1/3) ... [2021-02-21 20:41:41,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f001f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:41:41, skipping insertion in model container [2021-02-21 20:41:41,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:39" (2/3) ... [2021-02-21 20:41:41,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f001f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:41:41, skipping insertion in model container [2021-02-21 20:41:41,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:41:41" (3/3) ... [2021-02-21 20:41:41,103 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2021-02-21 20:41:41,118 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:41:41,128 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2021-02-21 20:41:41,168 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-02-21 20:41:41,244 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:41:41,244 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:41:41,244 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:41:41,245 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:41:41,245 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:41:41,245 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:41:41,245 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:41:41,245 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:41:41,295 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2021-02-21 20:41:41,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-21 20:41:41,309 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:41,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:41,311 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 20:41:41,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:41,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1375890334, now seen corresponding path program 1 times [2021-02-21 20:41:41,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:41,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232703526] [2021-02-21 20:41:41,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:41,421 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:41,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:41,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:41,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:41,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:41,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:41,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:41,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:41,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:41,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:41,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:41,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:41,775 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 20:41:41,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232703526] [2021-02-21 20:41:41,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:41,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 20:41:41,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749625623] [2021-02-21 20:41:41,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 20:41:41,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:41,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 20:41:41,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:41:41,811 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 5 states. [2021-02-21 20:41:42,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:42,427 INFO L93 Difference]: Finished difference Result 376 states and 492 transitions. [2021-02-21 20:41:42,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 20:41:42,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-02-21 20:41:42,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:42,442 INFO L225 Difference]: With dead ends: 376 [2021-02-21 20:41:42,442 INFO L226 Difference]: Without dead ends: 198 [2021-02-21 20:41:42,448 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 20:41:42,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-02-21 20:41:42,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 168. [2021-02-21 20:41:42,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2021-02-21 20:41:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 177 transitions. [2021-02-21 20:41:42,525 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 177 transitions. Word has length 17 [2021-02-21 20:41:42,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:42,526 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 177 transitions. [2021-02-21 20:41:42,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 20:41:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 177 transitions. [2021-02-21 20:41:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-21 20:41:42,528 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:42,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:42,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:41:42,528 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 20:41:42,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:42,529 INFO L82 PathProgramCache]: Analyzing trace with hash -590767728, now seen corresponding path program 1 times [2021-02-21 20:41:42,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:42,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724823685] [2021-02-21 20:41:42,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:42,536 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:42,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:42,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:42,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:42,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:42,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:42,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:42,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:42,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:42,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:42,626 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 20:41:42,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724823685] [2021-02-21 20:41:42,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:42,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:41:42,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879046544] [2021-02-21 20:41:42,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:41:42,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:42,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:41:42,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:41:42,630 INFO L87 Difference]: Start difference. First operand 168 states and 177 transitions. Second operand 4 states. [2021-02-21 20:41:42,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:42,985 INFO L93 Difference]: Finished difference Result 174 states and 183 transitions. [2021-02-21 20:41:42,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:41:42,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2021-02-21 20:41:42,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:42,987 INFO L225 Difference]: With dead ends: 174 [2021-02-21 20:41:42,988 INFO L226 Difference]: Without dead ends: 169 [2021-02-21 20:41:42,990 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 20:41:42,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-02-21 20:41:43,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-02-21 20:41:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2021-02-21 20:41:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 178 transitions. [2021-02-21 20:41:43,033 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 178 transitions. Word has length 29 [2021-02-21 20:41:43,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:43,035 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 178 transitions. [2021-02-21 20:41:43,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:41:43,035 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 178 transitions. [2021-02-21 20:41:43,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-21 20:41:43,037 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:43,037 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 20:41:43,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:41:43,038 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 20:41:43,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:43,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1889053171, now seen corresponding path program 1 times [2021-02-21 20:41:43,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:43,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846676399] [2021-02-21 20:41:43,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:43,057 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:43,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:43,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:43,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:43,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:43,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:43,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:41:43,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:43,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:43,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:43,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:41:43,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:43,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:43,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:43,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:43,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:43,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:43,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:43,296 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 20:41:43,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846676399] [2021-02-21 20:41:43,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:43,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:41:43,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278626564] [2021-02-21 20:41:43,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:41:43,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:43,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:41:43,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:41:43,299 INFO L87 Difference]: Start difference. First operand 169 states and 178 transitions. Second operand 8 states. [2021-02-21 20:41:43,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:43,980 INFO L93 Difference]: Finished difference Result 259 states and 274 transitions. [2021-02-21 20:41:43,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 20:41:43,981 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-02-21 20:41:43,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:43,984 INFO L225 Difference]: With dead ends: 259 [2021-02-21 20:41:43,984 INFO L226 Difference]: Without dead ends: 254 [2021-02-21 20:41:43,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:41:43,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-02-21 20:41:44,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 163. [2021-02-21 20:41:44,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-02-21 20:41:44,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 172 transitions. [2021-02-21 20:41:44,014 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 172 transitions. Word has length 31 [2021-02-21 20:41:44,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:44,015 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 172 transitions. [2021-02-21 20:41:44,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:41:44,015 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 172 transitions. [2021-02-21 20:41:44,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-02-21 20:41:44,016 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:44,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:44,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:41:44,017 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 20:41:44,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:44,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1151103869, now seen corresponding path program 1 times [2021-02-21 20:41:44,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:44,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825455327] [2021-02-21 20:41:44,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:44,023 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:44,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:44,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:44,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:44,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:44,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:44,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:41:44,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:44,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-21 20:41:44,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:44,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:44,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:44,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:44,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:44,167 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 20:41:44,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825455327] [2021-02-21 20:41:44,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:44,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:41:44,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848597349] [2021-02-21 20:41:44,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:41:44,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:44,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:41:44,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:41:44,170 INFO L87 Difference]: Start difference. First operand 163 states and 172 transitions. Second operand 6 states. [2021-02-21 20:41:44,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:44,668 INFO L93 Difference]: Finished difference Result 381 states and 403 transitions. [2021-02-21 20:41:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 20:41:44,669 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2021-02-21 20:41:44,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:44,671 INFO L225 Difference]: With dead ends: 381 [2021-02-21 20:41:44,671 INFO L226 Difference]: Without dead ends: 253 [2021-02-21 20:41:44,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:41:44,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-02-21 20:41:44,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 166. [2021-02-21 20:41:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2021-02-21 20:41:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 175 transitions. [2021-02-21 20:41:44,700 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 175 transitions. Word has length 37 [2021-02-21 20:41:44,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:44,700 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 175 transitions. [2021-02-21 20:41:44,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:41:44,700 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 175 transitions. [2021-02-21 20:41:44,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-21 20:41:44,702 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:44,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:44,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:41:44,703 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 20:41:44,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:44,703 INFO L82 PathProgramCache]: Analyzing trace with hash 670006272, now seen corresponding path program 1 times [2021-02-21 20:41:44,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:44,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893092430] [2021-02-21 20:41:44,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:44,709 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:44,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:44,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:44,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:44,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:44,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:44,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:44,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:44,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:44,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:44,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:44,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:44,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:44,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:44,799 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 20:41:44,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893092430] [2021-02-21 20:41:44,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:44,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:41:44,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871230628] [2021-02-21 20:41:44,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:41:44,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:44,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:41:44,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:41:44,801 INFO L87 Difference]: Start difference. First operand 166 states and 175 transitions. Second operand 6 states. [2021-02-21 20:41:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:45,207 INFO L93 Difference]: Finished difference Result 274 states and 289 transitions. [2021-02-21 20:41:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:41:45,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2021-02-21 20:41:45,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:45,209 INFO L225 Difference]: With dead ends: 274 [2021-02-21 20:41:45,210 INFO L226 Difference]: Without dead ends: 242 [2021-02-21 20:41:45,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:41:45,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-02-21 20:41:45,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 165. [2021-02-21 20:41:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2021-02-21 20:41:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 174 transitions. [2021-02-21 20:41:45,235 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 174 transitions. Word has length 39 [2021-02-21 20:41:45,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:45,235 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 174 transitions. [2021-02-21 20:41:45,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:41:45,235 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 174 transitions. [2021-02-21 20:41:45,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-21 20:41:45,237 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:45,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:45,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:41:45,237 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 20:41:45,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:45,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1831766512, now seen corresponding path program 1 times [2021-02-21 20:41:45,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:45,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646949249] [2021-02-21 20:41:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:45,243 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:45,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:45,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:41:45,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:41:45,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:41:45,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:41:45,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 20:41:45,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 20:41:45,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:41:45,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:45,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:45,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:45,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:45,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:45,458 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 20:41:45,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646949249] [2021-02-21 20:41:45,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:45,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 20:41:45,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165832292] [2021-02-21 20:41:45,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 20:41:45,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:45,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 20:41:45,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-02-21 20:41:45,461 INFO L87 Difference]: Start difference. First operand 165 states and 174 transitions. Second operand 12 states. [2021-02-21 20:41:46,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:46,382 INFO L93 Difference]: Finished difference Result 290 states and 306 transitions. [2021-02-21 20:41:46,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 20:41:46,383 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2021-02-21 20:41:46,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:46,385 INFO L225 Difference]: With dead ends: 290 [2021-02-21 20:41:46,386 INFO L226 Difference]: Without dead ends: 286 [2021-02-21 20:41:46,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-02-21 20:41:46,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-02-21 20:41:46,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 180. [2021-02-21 20:41:46,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2021-02-21 20:41:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 190 transitions. [2021-02-21 20:41:46,417 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 190 transitions. Word has length 46 [2021-02-21 20:41:46,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:46,418 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 190 transitions. [2021-02-21 20:41:46,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 20:41:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 190 transitions. [2021-02-21 20:41:46,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-21 20:41:46,421 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:46,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:46,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 20:41:46,422 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 20:41:46,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:46,423 INFO L82 PathProgramCache]: Analyzing trace with hash 2040854509, now seen corresponding path program 1 times [2021-02-21 20:41:46,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:46,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198011394] [2021-02-21 20:41:46,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:46,429 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:46,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:41:46,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:46,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,527 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 20:41:46,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198011394] [2021-02-21 20:41:46,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:46,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:41:46,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929900998] [2021-02-21 20:41:46,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:41:46,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:46,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:41:46,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:41:46,532 INFO L87 Difference]: Start difference. First operand 180 states and 190 transitions. Second operand 4 states. [2021-02-21 20:41:46,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:46,846 INFO L93 Difference]: Finished difference Result 286 states and 305 transitions. [2021-02-21 20:41:46,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:41:46,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2021-02-21 20:41:46,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:46,850 INFO L225 Difference]: With dead ends: 286 [2021-02-21 20:41:46,851 INFO L226 Difference]: Without dead ends: 219 [2021-02-21 20:41:46,854 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 20:41:46,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-02-21 20:41:46,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 183. [2021-02-21 20:41:46,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2021-02-21 20:41:46,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2021-02-21 20:41:46,882 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 47 [2021-02-21 20:41:46,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:46,884 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2021-02-21 20:41:46,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:41:46,885 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2021-02-21 20:41:46,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-21 20:41:46,891 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:46,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:46,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 20:41:46,892 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 20:41:46,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:46,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1539352912, now seen corresponding path program 1 times [2021-02-21 20:41:46,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:46,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669589937] [2021-02-21 20:41:46,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:46,898 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:46,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:41:46,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:46,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,998 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 20:41:47,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669589937] [2021-02-21 20:41:47,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:47,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:41:47,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393724778] [2021-02-21 20:41:47,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:41:47,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:47,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:41:47,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:41:47,003 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand 4 states. [2021-02-21 20:41:47,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:47,283 INFO L93 Difference]: Finished difference Result 183 states and 194 transitions. [2021-02-21 20:41:47,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:41:47,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2021-02-21 20:41:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:47,286 INFO L225 Difference]: With dead ends: 183 [2021-02-21 20:41:47,286 INFO L226 Difference]: Without dead ends: 181 [2021-02-21 20:41:47,287 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 20:41:47,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-02-21 20:41:47,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-02-21 20:41:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2021-02-21 20:41:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2021-02-21 20:41:47,316 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 49 [2021-02-21 20:41:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:47,316 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2021-02-21 20:41:47,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:41:47,317 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2021-02-21 20:41:47,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-21 20:41:47,319 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:47,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:47,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 20:41:47,320 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 20:41:47,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:47,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1003431575, now seen corresponding path program 1 times [2021-02-21 20:41:47,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:47,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837405720] [2021-02-21 20:41:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:47,325 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:47,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:47,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:47,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:41:47,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:47,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:47,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:41:47,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:41:47,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:47,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:47,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:47,546 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 20:41:47,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837405720] [2021-02-21 20:41:47,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:47,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 20:41:47,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393048570] [2021-02-21 20:41:47,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 20:41:47,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:47,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 20:41:47,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:41:47,551 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand 9 states. [2021-02-21 20:41:48,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:48,266 INFO L93 Difference]: Finished difference Result 372 states and 397 transitions. [2021-02-21 20:41:48,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 20:41:48,267 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2021-02-21 20:41:48,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:48,269 INFO L225 Difference]: With dead ends: 372 [2021-02-21 20:41:48,269 INFO L226 Difference]: Without dead ends: 304 [2021-02-21 20:41:48,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:41:48,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-02-21 20:41:48,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 200. [2021-02-21 20:41:48,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-02-21 20:41:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 212 transitions. [2021-02-21 20:41:48,303 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 212 transitions. Word has length 53 [2021-02-21 20:41:48,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:48,304 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 212 transitions. [2021-02-21 20:41:48,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 20:41:48,304 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 212 transitions. [2021-02-21 20:41:48,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-21 20:41:48,305 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:48,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:48,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 20:41:48,306 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 20:41:48,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:48,306 INFO L82 PathProgramCache]: Analyzing trace with hash 46675779, now seen corresponding path program 1 times [2021-02-21 20:41:48,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:48,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483233959] [2021-02-21 20:41:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:48,347 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:41:48,351 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:48,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:48,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:48,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:48,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:48,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:48,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:41:48,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:48,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:48,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:48,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:41:48,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:48,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:41:48,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:48,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:48,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:48,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:48,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:48,505 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 20:41:48,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483233959] [2021-02-21 20:41:48,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:48,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:41:48,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735761613] [2021-02-21 20:41:48,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:41:48,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:48,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:41:48,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:41:48,524 INFO L87 Difference]: Start difference. First operand 200 states and 212 transitions. Second operand 8 states. [2021-02-21 20:41:49,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:49,085 INFO L93 Difference]: Finished difference Result 284 states and 302 transitions. [2021-02-21 20:41:49,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 20:41:49,086 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2021-02-21 20:41:49,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:49,088 INFO L225 Difference]: With dead ends: 284 [2021-02-21 20:41:49,088 INFO L226 Difference]: Without dead ends: 254 [2021-02-21 20:41:49,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-02-21 20:41:49,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-02-21 20:41:49,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 235. [2021-02-21 20:41:49,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2021-02-21 20:41:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 254 transitions. [2021-02-21 20:41:49,132 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 254 transitions. Word has length 58 [2021-02-21 20:41:49,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:49,132 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 254 transitions. [2021-02-21 20:41:49,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:41:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 254 transitions. [2021-02-21 20:41:49,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-21 20:41:49,133 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:49,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:49,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 20:41:49,134 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 20:41:49,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:49,135 INFO L82 PathProgramCache]: Analyzing trace with hash -520604991, now seen corresponding path program 1 times [2021-02-21 20:41:49,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:49,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32672984] [2021-02-21 20:41:49,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:49,139 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:49,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:49,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:41:49,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:41:49,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:41:49,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 20:41:49,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 20:41:49,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 20:41:49,425 WARN L141 QuantifierPusher]: treesize reduction 11, result has 76.1 percent of original size [2021-02-21 20:41:49,426 WARN L147 QuantifierPusher]: treesize reduction 11, result has 76.1 percent of original size 35 [2021-02-21 20:41:49,473 WARN L141 QuantifierPusher]: treesize reduction 10, result has 84.4 percent of original size [2021-02-21 20:41:49,476 WARN L147 QuantifierPusher]: treesize reduction 10, result has 84.4 percent of original size 54 [2021-02-21 20:41:49,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-21 20:41:49,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 20:41:49,592 WARN L141 QuantifierPusher]: treesize reduction 12, result has 69.2 percent of original size [2021-02-21 20:41:49,594 WARN L147 QuantifierPusher]: treesize reduction 12, result has 69.2 percent of original size 27 [2021-02-21 20:41:49,624 WARN L141 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-02-21 20:41:49,626 WARN L147 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size 22 [2021-02-21 20:41:49,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:41:49,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:49,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:49,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:49,748 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 20:41:49,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32672984] [2021-02-21 20:41:49,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:49,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 20:41:49,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444178981] [2021-02-21 20:41:49,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 20:41:49,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:49,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 20:41:49,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:41:49,751 INFO L87 Difference]: Start difference. First operand 235 states and 254 transitions. Second operand 16 states. [2021-02-21 20:41:52,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:52,929 INFO L93 Difference]: Finished difference Result 662 states and 707 transitions. [2021-02-21 20:41:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-02-21 20:41:52,930 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2021-02-21 20:41:52,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:52,935 INFO L225 Difference]: With dead ends: 662 [2021-02-21 20:41:52,935 INFO L226 Difference]: Without dead ends: 659 [2021-02-21 20:41:52,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=470, Invalid=1980, Unknown=0, NotChecked=0, Total=2450 [2021-02-21 20:41:52,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-02-21 20:41:52,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 252. [2021-02-21 20:41:52,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2021-02-21 20:41:52,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 272 transitions. [2021-02-21 20:41:52,997 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 272 transitions. Word has length 58 [2021-02-21 20:41:52,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:52,997 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 272 transitions. [2021-02-21 20:41:52,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 20:41:52,998 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 272 transitions. [2021-02-21 20:41:52,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-21 20:41:52,999 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:52,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:52,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 20:41:52,999 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 20:41:53,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:53,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1730207930, now seen corresponding path program 1 times [2021-02-21 20:41:53,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:53,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683680157] [2021-02-21 20:41:53,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:53,004 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:53,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:53,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:53,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:53,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:53,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:53,059 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 20:41:53,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683680157] [2021-02-21 20:41:53,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:53,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:41:53,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762886444] [2021-02-21 20:41:53,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:41:53,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:53,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:41:53,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:41:53,062 INFO L87 Difference]: Start difference. First operand 252 states and 272 transitions. Second operand 4 states. [2021-02-21 20:41:53,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:53,380 INFO L93 Difference]: Finished difference Result 258 states and 278 transitions. [2021-02-21 20:41:53,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:41:53,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2021-02-21 20:41:53,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:53,383 INFO L225 Difference]: With dead ends: 258 [2021-02-21 20:41:53,383 INFO L226 Difference]: Without dead ends: 253 [2021-02-21 20:41:53,384 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 20:41:53,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-02-21 20:41:53,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2021-02-21 20:41:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2021-02-21 20:41:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 273 transitions. [2021-02-21 20:41:53,430 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 273 transitions. Word has length 60 [2021-02-21 20:41:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:53,430 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 273 transitions. [2021-02-21 20:41:53,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:41:53,430 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 273 transitions. [2021-02-21 20:41:53,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-21 20:41:53,432 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:53,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:53,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-21 20:41:53,432 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 20:41:53,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:53,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1674423261, now seen corresponding path program 1 times [2021-02-21 20:41:53,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:53,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35505253] [2021-02-21 20:41:53,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:53,437 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:53,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:53,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:53,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:41:53,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:53,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:41:53,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:53,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:53,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:53,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:53,548 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 20:41:53,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35505253] [2021-02-21 20:41:53,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:53,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:41:53,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969813742] [2021-02-21 20:41:53,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:41:53,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:53,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:41:53,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:41:53,569 INFO L87 Difference]: Start difference. First operand 253 states and 273 transitions. Second operand 8 states. [2021-02-21 20:41:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:54,148 INFO L93 Difference]: Finished difference Result 272 states and 294 transitions. [2021-02-21 20:41:54,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 20:41:54,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2021-02-21 20:41:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:54,150 INFO L225 Difference]: With dead ends: 272 [2021-02-21 20:41:54,150 INFO L226 Difference]: Without dead ends: 267 [2021-02-21 20:41:54,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:41:54,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-02-21 20:41:54,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 247. [2021-02-21 20:41:54,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2021-02-21 20:41:54,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 267 transitions. [2021-02-21 20:41:54,198 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 267 transitions. Word has length 62 [2021-02-21 20:41:54,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:54,198 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 267 transitions. [2021-02-21 20:41:54,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:41:54,198 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 267 transitions. [2021-02-21 20:41:54,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-21 20:41:54,199 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:54,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:54,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-21 20:41:54,200 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 20:41:54,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:54,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1193557234, now seen corresponding path program 1 times [2021-02-21 20:41:54,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:54,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521661172] [2021-02-21 20:41:54,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:54,204 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:41:54,221 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:41:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:41:54,239 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:41:54,280 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:41:54,280 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:41:54,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-21 20:41:54,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:41:54 BoogieIcfgContainer [2021-02-21 20:41:54,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:41:54,304 INFO L168 Benchmark]: Toolchain (without parser) took 15163.13 ms. Allocated memory was 155.2 MB in the beginning and 330.3 MB in the end (delta: 175.1 MB). Free memory was 129.9 MB in the beginning and 181.6 MB in the end (delta: -51.7 MB). Peak memory consumption was 123.9 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:54,304 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:41:54,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.17 ms. Allocated memory is still 155.2 MB. Free memory was 128.7 MB in the beginning and 134.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:54,305 INFO L168 Benchmark]: Boogie Preprocessor took 142.33 ms. Allocated memory is still 155.2 MB. Free memory was 134.5 MB in the beginning and 131.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:54,305 INFO L168 Benchmark]: RCFGBuilder took 1108.41 ms. Allocated memory is still 155.2 MB. Free memory was 131.4 MB in the beginning and 115.1 MB in the end (delta: 16.3 MB). Peak memory consumption was 47.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:54,305 INFO L168 Benchmark]: TraceAbstraction took 13215.90 ms. Allocated memory was 155.2 MB in the beginning and 330.3 MB in the end (delta: 175.1 MB). Free memory was 114.6 MB in the beginning and 181.6 MB in the end (delta: -67.0 MB). Peak memory consumption was 108.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:54,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 667.17 ms. Allocated memory is still 155.2 MB. Free memory was 128.7 MB in the beginning and 134.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 142.33 ms. Allocated memory is still 155.2 MB. Free memory was 134.5 MB in the beginning and 131.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1108.41 ms. Allocated memory is still 155.2 MB. Free memory was 131.4 MB in the beginning and 115.1 MB in the end (delta: 16.3 MB). Peak memory consumption was 47.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13215.90 ms. Allocated memory was 155.2 MB in the beginning and 330.3 MB in the end (delta: 175.1 MB). Free memory was 114.6 MB in the beginning and 181.6 MB in the end (delta: -67.0 MB). Peak memory consumption was 108.1 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) [L1006] COND FALSE !(!(list != ((void*)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) [L1006] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L1008] SLL* end = list; [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1022] end = ((void*)0) [L1023] end = list [L1026] COND FALSE !(!(((void*)0) != end)) [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 [L1034] COND TRUE len == 0 [L1035] len = 1 [L1038] COND FALSE !(!(((void*)0) != inner)) [L1039] EXPR inner->inner [L1039] COND FALSE !(!(((void*)0) == inner->inner)) [L1040] EXPR inner->next [L1040] COND TRUE !(((void*)0) != inner->next) [L1040] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 193 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.0s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2150 SDtfs, 3530 SDslu, 6129 SDs, 0 SdLazy, 4484 SolverSat, 136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=253occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 977 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...