/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/simple-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:35:07,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:35:07,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:35:07,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:35:07,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:35:07,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:35:07,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:35:07,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:35:07,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:35:07,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:35:07,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:35:07,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:35:07,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:35:07,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:35:07,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:35:07,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:35:07,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:35:07,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:35:07,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:35:07,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:35:07,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:35:07,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:35:07,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:35:07,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:35:07,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 13:35:07,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 13:35:07,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 13:35:07,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 13:35:07,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 13:35:07,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 13:35:07,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 13:35:07,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 13:35:07,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 13:35:07,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 13:35:07,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 13:35:07,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 13:35:07,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 13:35:07,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 13:35:07,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:35:07,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:35:07,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:35:07,189 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:35:07,247 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:35:07,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:35:07,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:35:07,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:35:07,250 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:35:07,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:35:07,251 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:35:07,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:35:07,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:35:07,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:35:07,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:35:07,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:35:07,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:35:07,255 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:35:07,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:35:07,255 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:35:07,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:35:07,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:35:07,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:35:07,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:35:07,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:35:07,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:35:07,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:35:07,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:35:07,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:35:07,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:35:07,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:35:07,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:35:07,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:35:07,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:35:07,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:35:07,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:35:07,656 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:35:07,657 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:35:07,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple-1.i [2021-02-23 13:35:07,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f46dd6a47/b2f622c5a58f4addadb8a620ab6010cd/FLAG55d93a8a1 [2021-02-23 13:35:08,556 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:35:08,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple-1.i [2021-02-23 13:35:08,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f46dd6a47/b2f622c5a58f4addadb8a620ab6010cd/FLAG55d93a8a1 [2021-02-23 13:35:08,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f46dd6a47/b2f622c5a58f4addadb8a620ab6010cd [2021-02-23 13:35:08,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:35:08,815 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:35:08,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:35:08,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:35:08,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:35:08,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:35:08" (1/1) ... [2021-02-23 13:35:08,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba62e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:08, skipping insertion in model container [2021-02-23 13:35:08,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:35:08" (1/1) ... [2021-02-23 13:35:08,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:35:08,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:35:09,183 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple-1.i[23237,23250] [2021-02-23 13:35:09,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:35:09,209 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:35:09,284 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple-1.i[23237,23250] [2021-02-23 13:35:09,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:35:09,344 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:35:09,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:09 WrapperNode [2021-02-23 13:35:09,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:35:09,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:35:09,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:35:09,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:35:09,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:09" (1/1) ... [2021-02-23 13:35:09,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:09" (1/1) ... [2021-02-23 13:35:09,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:09" (1/1) ... [2021-02-23 13:35:09,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:09" (1/1) ... [2021-02-23 13:35:09,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:09" (1/1) ... [2021-02-23 13:35:09,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:09" (1/1) ... [2021-02-23 13:35:09,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:09" (1/1) ... [2021-02-23 13:35:09,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:35:09,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:35:09,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:35:09,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:35:09,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:35:09,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:35:09,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:35:09,572 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:35:09,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 13:35:09,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 13:35:09,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-23 13:35:09,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-23 13:35:09,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-23 13:35:09,573 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-23 13:35:09,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:35:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:35:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:35:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 13:35:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 13:35:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:35:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:35:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:35:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 13:35:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 13:35:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 13:35:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 13:35:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 13:35:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 13:35:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 13:35:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 13:35:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 13:35:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 13:35:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 13:35:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 13:35:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 13:35:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 13:35:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 13:35:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 13:35:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 13:35:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 13:35:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-23 13:35:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-23 13:35:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-23 13:35:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 13:35:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 13:35:09,578 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 13:35:09,578 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 13:35:09,578 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 13:35:09,578 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 13:35:09,578 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 13:35:09,578 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 13:35:09,578 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 13:35:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 13:35:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 13:35:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 13:35:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 13:35:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 13:35:09,579 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 13:35:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 13:35:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 13:35:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 13:35:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 13:35:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 13:35:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 13:35:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 13:35:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 13:35:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 13:35:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 13:35:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 13:35:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 13:35:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 13:35:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 13:35:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 13:35:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 13:35:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 13:35:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 13:35:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 13:35:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:35:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 13:35:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 13:35:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 13:35:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 13:35:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 13:35:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 13:35:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 13:35:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 13:35:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 13:35:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 13:35:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 13:35:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 13:35:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 13:35:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 13:35:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 13:35:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 13:35:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 13:35:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 13:35:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 13:35:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 13:35:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 13:35:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 13:35:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 13:35:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 13:35:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 13:35:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 13:35:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 13:35:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 13:35:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 13:35:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 13:35:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 13:35:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 13:35:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 13:35:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 13:35:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 13:35:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 13:35:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 13:35:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 13:35:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 13:35:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 13:35:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 13:35:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 13:35:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 13:35:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 13:35:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 13:35:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 13:35:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 13:35:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 13:35:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 13:35:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 13:35:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-23 13:35:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:35:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:35:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:35:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 13:35:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 13:35:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:35:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:35:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:35:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:35:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:35:10,013 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-23 13:35:10,190 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:35:10,191 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 13:35:10,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:35:10 BoogieIcfgContainer [2021-02-23 13:35:10,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:35:10,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:35:10,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:35:10,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:35:10,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:35:08" (1/3) ... [2021-02-23 13:35:10,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144139a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:35:10, skipping insertion in model container [2021-02-23 13:35:10,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:09" (2/3) ... [2021-02-23 13:35:10,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144139a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:35:10, skipping insertion in model container [2021-02-23 13:35:10,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:35:10" (3/3) ... [2021-02-23 13:35:10,221 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-1.i [2021-02-23 13:35:10,231 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:35:10,238 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:35:10,260 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:35:10,305 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:35:10,305 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:35:10,306 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:35:10,306 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:35:10,306 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:35:10,306 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:35:10,306 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:35:10,306 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:35:10,328 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2021-02-23 13:35:10,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-02-23 13:35:10,341 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:35:10,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:35:10,342 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:35:10,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:35:10,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1162983228, now seen corresponding path program 1 times [2021-02-23 13:35:10,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:35:10,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336114855] [2021-02-23 13:35:10,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:35:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:10,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:10,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:10,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:10,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:10,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:35:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:10,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:10,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:35:10,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336114855] [2021-02-23 13:35:10,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:35:10,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:35:10,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859936117] [2021-02-23 13:35:10,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:35:10,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:35:10,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:35:10,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:35:10,653 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2021-02-23 13:35:10,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:35:10,785 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2021-02-23 13:35:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:35:10,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-02-23 13:35:10,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:35:10,797 INFO L225 Difference]: With dead ends: 38 [2021-02-23 13:35:10,797 INFO L226 Difference]: Without dead ends: 18 [2021-02-23 13:35:10,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:35:10,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-02-23 13:35:10,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-02-23 13:35:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-02-23 13:35:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-02-23 13:35:10,848 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2021-02-23 13:35:10,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:35:10,848 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-02-23 13:35:10,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:35:10,848 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-02-23 13:35:10,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-23 13:35:10,849 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:35:10,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:35:10,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:35:10,850 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:35:10,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:35:10,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1250104141, now seen corresponding path program 1 times [2021-02-23 13:35:10,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:35:10,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875662959] [2021-02-23 13:35:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:35:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:10,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:10,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:10,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:10,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:35:10,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:10,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:35:10,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:10,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:10,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:10,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:35:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:11,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:35:11,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875662959] [2021-02-23 13:35:11,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:35:11,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:35:11,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883904180] [2021-02-23 13:35:11,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:35:11,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:35:11,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:35:11,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:35:11,022 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2021-02-23 13:35:11,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:35:11,177 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2021-02-23 13:35:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:35:11,177 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-02-23 13:35:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:35:11,180 INFO L225 Difference]: With dead ends: 33 [2021-02-23 13:35:11,180 INFO L226 Difference]: Without dead ends: 31 [2021-02-23 13:35:11,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-23 13:35:11,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-23 13:35:11,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-02-23 13:35:11,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-02-23 13:35:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-02-23 13:35:11,197 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2021-02-23 13:35:11,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:35:11,198 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-02-23 13:35:11,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:35:11,198 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-02-23 13:35:11,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-23 13:35:11,199 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:35:11,199 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:35:11,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:35:11,200 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:35:11,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:35:11,204 INFO L82 PathProgramCache]: Analyzing trace with hash 195866160, now seen corresponding path program 1 times [2021-02-23 13:35:11,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:35:11,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284629178] [2021-02-23 13:35:11,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:35:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:11,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:11,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:35:11,382 WARN L141 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-02-23 13:35:11,385 WARN L147 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size 22 [2021-02-23 13:35:11,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:35:11,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:35:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:11,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:35:11,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284629178] [2021-02-23 13:35:11,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425722923] [2021-02-23 13:35:11,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-23 13:35:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:11,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2021-02-23 13:35:11,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-23 13:35:11,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:35:11,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:35:11,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:11,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:11,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:11,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:11,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:11,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:11,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:35:11,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:35:11,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:35:11,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:35:11,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:35:11,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:35:11,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:35:11,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:35:11,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:35:11,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:35:11,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:35:11,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:35:11,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:35:11,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:35:11,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:35:11,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:35:11,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-23 13:35:11,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:35:11,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:35:11,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:35:11,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:35:11,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-23 13:35:11,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:35:11,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:35:11,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:35:11,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:35:11,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 13:35:11,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-02-23 13:35:11,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:35:11,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:35:11,771 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-23 13:35:11,777 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-02-23 13:35:11,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:35:11,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:35:11,783 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-23 13:35:11,789 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 13:35:11,792 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-02-23 13:35:11,792 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2021-02-23 13:35:11,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 13:35:11,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 13:35:11,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 13:35:11,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 13:35:11,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 13:35:11,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 13:35:11,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 13:35:11,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 13:35:11,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 13:35:11,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 13:35:11,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:35:11,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-23 13:35:11,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-23 13:35:11,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:35:11,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-23 13:35:11,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-23 13:35:11,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:35:11,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:35:11,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 13:35:11,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 13:35:11,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:35:11,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:35:11,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 13:35:11,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 13:35:11,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:35:11,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-23 13:35:11,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-23 13:35:11,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-02-23 13:35:11,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:35:11,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:11,856 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-23 13:35:11,862 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-02-23 13:35:11,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:35:11,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:11,867 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-23 13:35:11,890 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:35:11,893 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-02-23 13:35:11,893 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2021-02-23 13:35:11,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:35:11,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:35:11,897 WARN L141 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-02-23 13:35:11,897 WARN L147 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1 [2021-02-23 13:35:11,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:11,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:35:11,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-23 13:35:11,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 7 [2021-02-23 13:35:11,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679526307] [2021-02-23 13:35:11,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 13:35:11,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:35:11,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 13:35:11,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-23 13:35:11,908 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 7 states. [2021-02-23 13:35:11,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:35:11,999 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2021-02-23 13:35:12,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 13:35:12,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2021-02-23 13:35:12,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:35:12,001 INFO L225 Difference]: With dead ends: 37 [2021-02-23 13:35:12,001 INFO L226 Difference]: Without dead ends: 27 [2021-02-23 13:35:12,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-23 13:35:12,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-02-23 13:35:12,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2021-02-23 13:35:12,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-02-23 13:35:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-02-23 13:35:12,007 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2021-02-23 13:35:12,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:35:12,008 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-02-23 13:35:12,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 13:35:12,008 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-02-23 13:35:12,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-02-23 13:35:12,009 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:35:12,009 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:35:12,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-02-23 13:35:12,223 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:35:12,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:35:12,224 INFO L82 PathProgramCache]: Analyzing trace with hash 933230324, now seen corresponding path program 1 times [2021-02-23 13:35:12,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:35:12,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710417005] [2021-02-23 13:35:12,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:35:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:35:12,251 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:35:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:35:12,271 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:35:12,301 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:35:12,302 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:35:12,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 13:35:12,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:35:12 BoogieIcfgContainer [2021-02-23 13:35:12,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:35:12,361 INFO L168 Benchmark]: Toolchain (without parser) took 3554.89 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 129.3 MB in the beginning and 140.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. [2021-02-23 13:35:12,361 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:35:12,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 527.46 ms. Allocated memory is still 155.2 MB. Free memory was 128.1 MB in the beginning and 106.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:35:12,362 INFO L168 Benchmark]: Boogie Preprocessor took 120.49 ms. Allocated memory is still 155.2 MB. Free memory was 106.4 MB in the beginning and 137.7 MB in the end (delta: -31.3 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:35:12,363 INFO L168 Benchmark]: RCFGBuilder took 729.06 ms. Allocated memory is still 155.2 MB. Free memory was 137.7 MB in the beginning and 96.7 MB in the end (delta: 40.9 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:35:12,369 INFO L168 Benchmark]: TraceAbstraction took 2149.10 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 96.7 MB in the beginning and 140.5 MB in the end (delta: -43.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:35:12,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 527.46 ms. Allocated memory is still 155.2 MB. Free memory was 128.1 MB in the beginning and 106.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 120.49 ms. Allocated memory is still 155.2 MB. Free memory was 106.4 MB in the beginning and 137.7 MB in the end (delta: -31.3 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 729.06 ms. Allocated memory is still 155.2 MB. Free memory was 137.7 MB in the beginning and 96.7 MB in the end (delta: 40.9 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2149.10 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 96.7 MB in the beginning and 140.5 MB in the end (delta: -43.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 549]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L533] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L534] List t; [L535] List p = a; [L536] a->h = 2 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] p->h = 1 [L539] t = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L540] COND FALSE !(t == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L541] p->n = t [L542] EXPR p->n [L542] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L544] p->h = 2 [L545] p->n = 0 [L546] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L547] COND TRUE p!=0 [L548] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->h=1, t={-2:0}] [L548] COND TRUE p->h != 2 [L549] reach_error() VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 41 SDslu, 73 SDs, 0 SdLazy, 122 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 5347 SizeOfPredicates, 6 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...