/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-b7b32d2 [2021-02-19 17:42:06,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:42:06,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:42:06,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:42:06,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:42:06,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:42:06,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:42:06,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:42:06,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:42:06,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:42:06,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:42:06,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:42:06,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:42:06,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:42:06,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:42:06,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:42:06,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:42:06,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:42:06,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:42:06,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:42:06,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:42:06,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:42:06,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:42:06,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:42:06,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-19 17:42:06,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-19 17:42:06,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-19 17:42:06,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-19 17:42:06,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-19 17:42:06,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-19 17:42:06,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-19 17:42:06,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-19 17:42:06,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-19 17:42:06,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-19 17:42:06,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-19 17:42:06,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-19 17:42:06,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-19 17:42:06,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-19 17:42:06,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:42:06,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:42:06,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:42:06,134 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 [2021-02-19 17:42:06,188 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:42:06,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:42:06,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:42:06,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:42:06,193 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:42:06,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:42:06,194 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:42:06,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:42:06,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:42:06,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:42:06,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:42:06,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:42:06,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:42:06,196 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:42:06,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:42:06,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:42:06,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:42:06,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:42:06,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:42:06,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:42:06,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:42:06,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:42:06,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:42:06,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:42:06,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:42:06,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:42:06,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:42:06,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:42:06,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:42:06,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:42:06,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:42:06,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:42:06,737 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:42:06,738 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:42:06,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple-1.i [2021-02-19 17:42:06,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/457ec6792/d253f9a7c80445e3ad8d61d1088b778d/FLAG77fb2f0ad [2021-02-19 17:42:07,526 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:42:07,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple-1.i [2021-02-19 17:42:07,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/457ec6792/d253f9a7c80445e3ad8d61d1088b778d/FLAG77fb2f0ad [2021-02-19 17:42:07,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/457ec6792/d253f9a7c80445e3ad8d61d1088b778d [2021-02-19 17:42:07,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:42:07,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:42:07,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:42:07,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:42:07,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:42:07,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:42:07" (1/1) ... [2021-02-19 17:42:07,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5224b359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:42:07, skipping insertion in model container [2021-02-19 17:42:07,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:42:07" (1/1) ... [2021-02-19 17:42:07,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:42:07,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:42:08,125 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] [2021-02-19 17:42:08,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:42:08,140 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:42:08,186 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] [2021-02-19 17:42:08,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:42:08,258 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:42:08,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:42:08 WrapperNode [2021-02-19 17:42:08,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:42:08,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:42:08,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:42:08,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:42:08,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:42:08" (1/1) ... [2021-02-19 17:42:08,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:42:08" (1/1) ... [2021-02-19 17:42:08,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:42:08" (1/1) ... [2021-02-19 17:42:08,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:42:08" (1/1) ... [2021-02-19 17:42:08,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:42:08" (1/1) ... [2021-02-19 17:42:08,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:42:08" (1/1) ... [2021-02-19 17:42:08,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:42:08" (1/1) ... [2021-02-19 17:42:08,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:42:08,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:42:08,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:42:08,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:42:08,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:42:08" (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 [2021-02-19 17:42:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:42:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:42:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:42:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-19 17:42:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-19 17:42:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-19 17:42:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-19 17:42:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-19 17:42:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-19 17:42:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:42:08,464 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:42:08,464 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:42:08,464 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-19 17:42:08,464 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-19 17:42:08,465 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:42:08,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:42:08,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:42:08,465 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-19 17:42:08,465 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-19 17:42:08,465 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-19 17:42:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-19 17:42:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-19 17:42:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-19 17:42:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-19 17:42:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-19 17:42:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-19 17:42:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-19 17:42:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-19 17:42:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-19 17:42:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-19 17:42:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-19 17:42:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-19 17:42:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-19 17:42:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-19 17:42:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-19 17:42:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-19 17:42:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-19 17:42:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-19 17:42:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-19 17:42:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-19 17:42:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-19 17:42:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-19 17:42:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-19 17:42:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-19 17:42:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-19 17:42:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-19 17:42:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-19 17:42:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-19 17:42:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-19 17:42:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-19 17:42:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-19 17:42:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-19 17:42:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-19 17:42:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-19 17:42:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-19 17:42:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-19 17:42:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-19 17:42:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-19 17:42:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-19 17:42:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-19 17:42:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-19 17:42:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-19 17:42:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-19 17:42:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-19 17:42:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-19 17:42:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-19 17:42:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-19 17:42:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-19 17:42:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-19 17:42:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-19 17:42:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-19 17:42:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-19 17:42:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 17:42:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-19 17:42:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-19 17:42:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-19 17:42:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-19 17:42:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-19 17:42:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-19 17:42:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-19 17:42:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-19 17:42:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-19 17:42:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-19 17:42:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-19 17:42:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-19 17:42:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-19 17:42:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-19 17:42:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-19 17:42:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-19 17:42:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-19 17:42:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-19 17:42:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-19 17:42:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-19 17:42:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-19 17:42:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-19 17:42:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-19 17:42:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-19 17:42:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-19 17:42:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-19 17:42:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-19 17:42:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-19 17:42:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-19 17:42:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-19 17:42:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-19 17:42:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-19 17:42:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-19 17:42:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-19 17:42:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-19 17:42:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-19 17:42:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-19 17:42:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-19 17:42:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-19 17:42:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-19 17:42:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-19 17:42:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-19 17:42:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-19 17:42:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-19 17:42:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-19 17:42:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-19 17:42:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-19 17:42:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-19 17:42:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-19 17:42:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-19 17:42:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-19 17:42:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:42:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 17:42:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:42:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-19 17:42:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-19 17:42:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:42:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:42:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:42:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:42:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:42:08,869 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-19 17:42:09,056 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:42:09,056 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-19 17:42:09,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:42:09 BoogieIcfgContainer [2021-02-19 17:42:09,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:42:09,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:42:09,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:42:09,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:42:09,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:42:07" (1/3) ... [2021-02-19 17:42:09,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbdd489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:42:09, skipping insertion in model container [2021-02-19 17:42:09,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:42:08" (2/3) ... [2021-02-19 17:42:09,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbdd489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:42:09, skipping insertion in model container [2021-02-19 17:42:09,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:42:09" (3/3) ... [2021-02-19 17:42:09,068 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-1.i [2021-02-19 17:42:09,076 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:42:09,081 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:42:09,101 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:42:09,131 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:42:09,132 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:42:09,132 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:42:09,132 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:42:09,132 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:42:09,132 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:42:09,132 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:42:09,133 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:42:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2021-02-19 17:42:09,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-02-19 17:42:09,158 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:42:09,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:42:09,160 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:42:09,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:42:09,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1162983228, now seen corresponding path program 1 times [2021-02-19 17:42:09,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:42:09,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363654505] [2021-02-19 17:42:09,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:42:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:42:09,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:09,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:09,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:09,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:09,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:42:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:42:09,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:09,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:42:09,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363654505] [2021-02-19 17:42:09,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:42:09,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 17:42:09,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420699332] [2021-02-19 17:42:09,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:42:09,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:42:09,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:42:09,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:42:09,459 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2021-02-19 17:42:09,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:42:09,539 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2021-02-19 17:42:09,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:42:09,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-02-19 17:42:09,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:42:09,549 INFO L225 Difference]: With dead ends: 38 [2021-02-19 17:42:09,549 INFO L226 Difference]: Without dead ends: 18 [2021-02-19 17:42:09,552 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 [2021-02-19 17:42:09,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-02-19 17:42:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-02-19 17:42:09,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-02-19 17:42:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-02-19 17:42:09,595 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2021-02-19 17:42:09,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:42:09,595 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-02-19 17:42:09,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 17:42:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-02-19 17:42:09,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-19 17:42:09,596 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:42:09,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:42:09,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:42:09,597 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:42:09,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:42:09,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1250104141, now seen corresponding path program 1 times [2021-02-19 17:42:09,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:42:09,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364634533] [2021-02-19 17:42:09,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:42:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:42:09,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:09,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:09,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:09,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:42:09,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:09,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:42:09,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:09,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:42:09,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:09,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:09,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:42:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:42:09,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:09,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:42:09,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364634533] [2021-02-19 17:42:09,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:42:09,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-19 17:42:09,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976397706] [2021-02-19 17:42:09,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 17:42:09,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:42:09,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 17:42:09,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-19 17:42:09,790 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2021-02-19 17:42:09,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:42:09,890 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2021-02-19 17:42:09,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 17:42:09,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-02-19 17:42:09,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:42:09,892 INFO L225 Difference]: With dead ends: 33 [2021-02-19 17:42:09,892 INFO L226 Difference]: Without dead ends: 31 [2021-02-19 17:42:09,894 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 [2021-02-19 17:42:09,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-19 17:42:09,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-02-19 17:42:09,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-02-19 17:42:09,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-02-19 17:42:09,902 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2021-02-19 17:42:09,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:42:09,902 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-02-19 17:42:09,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-19 17:42:09,902 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-02-19 17:42:09,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-19 17:42:09,903 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:42:09,903 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:42:09,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:42:09,904 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:42:09,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:42:09,905 INFO L82 PathProgramCache]: Analyzing trace with hash 195866160, now seen corresponding path program 1 times [2021-02-19 17:42:09,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:42:09,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609223771] [2021-02-19 17:42:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:42:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:42:09,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:09,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:09,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:09,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:42:09,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:09,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:42:10,006 WARN L141 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-02-19 17:42:10,007 WARN L147 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size 22 [2021-02-19 17:42:10,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:42:10,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:42:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:42:10,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:42:10,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609223771] [2021-02-19 17:42:10,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755309892] [2021-02-19 17:42:10,083 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 [2021-02-19 17:42:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:42:10,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2021-02-19 17:42:10,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 17:42:10,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:42:10,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-19 17:42:10,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:42:10,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:42:10,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:42:10,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:42:10,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:42:10,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:42:10,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:42:10,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:42:10,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:42:10,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:42:10,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:42:10,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:42:10,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:42:10,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:42:10,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:42:10,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:42:10,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:42:10,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:42:10,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:42:10,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-19 17:42:10,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:42:10,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-19 17:42:10,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-19 17:42:10,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:42:10,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-19 17:42:10,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:42:10,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-19 17:42:10,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-19 17:42:10,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:42:10,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-19 17:42:10,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:42:10,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-19 17:42:10,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-19 17:42:10,504 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 [2021-02-19 17:42:10,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:42:10,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:42:10,510 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 17:42:10,517 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,520 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 [2021-02-19 17:42:10,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:42:10,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:42:10,525 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 17:42:10,531 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-19 17:42:10,534 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-02-19 17:42:10,534 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2021-02-19 17:42:10,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-19 17:42:10,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-19 17:42:10,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-19 17:42:10,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-19 17:42:10,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-19 17:42:10,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-19 17:42:10,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-19 17:42:10,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-19 17:42:10,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-19 17:42:10,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-19 17:42:10,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:42:10,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-19 17:42:10,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-19 17:42:10,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:42:10,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-19 17:42:10,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-19 17:42:10,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:42:10,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:42:10,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-19 17:42:10,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-19 17:42:10,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:42:10,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:42:10,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-19 17:42:10,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-19 17:42:10,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:42:10,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-19 17:42:10,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-19 17:42:10,623 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 [2021-02-19 17:42:10,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-19 17:42:10,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:42:10,628 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 17:42:10,634 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,637 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 [2021-02-19 17:42:10,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-19 17:42:10,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:42:10,640 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 17:42:10,644 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:42:10,646 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-02-19 17:42:10,646 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2021-02-19 17:42:10,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:42:10,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:42:10,649 WARN L141 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-02-19 17:42:10,650 WARN L147 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1 [2021-02-19 17:42:10,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:42:10,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:42:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:42:10,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 17:42:10,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 7 [2021-02-19 17:42:10,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435975273] [2021-02-19 17:42:10,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 17:42:10,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:42:10,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 17:42:10,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-19 17:42:10,659 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 7 states. [2021-02-19 17:42:10,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:42:10,746 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2021-02-19 17:42:10,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 17:42:10,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2021-02-19 17:42:10,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:42:10,747 INFO L225 Difference]: With dead ends: 37 [2021-02-19 17:42:10,747 INFO L226 Difference]: Without dead ends: 27 [2021-02-19 17:42:10,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-19 17:42:10,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-02-19 17:42:10,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2021-02-19 17:42:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-02-19 17:42:10,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-02-19 17:42:10,753 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2021-02-19 17:42:10,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:42:10,753 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-02-19 17:42:10,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-19 17:42:10,754 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-02-19 17:42:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-02-19 17:42:10,754 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:42:10,754 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:42:10,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-02-19 17:42:10,969 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:42:10,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:42:10,970 INFO L82 PathProgramCache]: Analyzing trace with hash 933230324, now seen corresponding path program 1 times [2021-02-19 17:42:10,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:42:10,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147094151] [2021-02-19 17:42:10,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:42:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:42:11,028 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:42:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:42:11,078 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:42:11,122 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:42:11,122 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:42:11,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-19 17:42:11,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:42:11 BoogieIcfgContainer [2021-02-19 17:42:11,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:42:11,174 INFO L168 Benchmark]: Toolchain (without parser) took 3432.18 ms. Allocated memory is still 155.2 MB. Free memory was 117.0 MB in the beginning and 54.9 MB in the end (delta: 62.1 MB). Peak memory consumption was 61.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:42:11,174 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 155.2 MB. Free memory is still 134.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:42:11,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 498.80 ms. Allocated memory is still 155.2 MB. Free memory was 115.7 MB in the beginning and 125.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. [2021-02-19 17:42:11,175 INFO L168 Benchmark]: Boogie Preprocessor took 84.53 ms. Allocated memory is still 155.2 MB. Free memory was 125.8 MB in the beginning and 123.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:42:11,176 INFO L168 Benchmark]: RCFGBuilder took 712.12 ms. Allocated memory is still 155.2 MB. Free memory was 123.2 MB in the beginning and 126.5 MB in the end (delta: -3.3 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:42:11,176 INFO L168 Benchmark]: TraceAbstraction took 2112.86 ms. Allocated memory is still 155.2 MB. Free memory was 126.0 MB in the beginning and 54.9 MB in the end (delta: 71.1 MB). Peak memory consumption was 71.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:42:11,178 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 155.2 MB. Free memory is still 134.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 498.80 ms. Allocated memory is still 155.2 MB. Free memory was 115.7 MB in the beginning and 125.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 84.53 ms. Allocated memory is still 155.2 MB. Free memory was 125.8 MB in the beginning and 123.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 712.12 ms. Allocated memory is still 155.2 MB. Free memory was 123.2 MB in the beginning and 126.5 MB in the end (delta: -3.3 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2112.86 ms. Allocated memory is still 155.2 MB. Free memory was 126.0 MB in the beginning and 54.9 MB in the end (delta: 71.1 MB). Peak memory consumption was 71.6 MB. 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: 1.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, 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, 0.1s 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...