/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/alt_test.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:19:52,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:19:52,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:19:52,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:19:52,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:19:52,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:19:52,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:19:52,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:19:52,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:19:52,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:19:52,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:19:52,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:19:52,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:19:52,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:19:52,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:19:52,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:19:52,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:19:52,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:19:52,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:19:52,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:19:52,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:19:52,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:19:52,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:19:52,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:19:52,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 11:19:52,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 11:19:52,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 11:19:52,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 11:19:52,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 11:19:52,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 11:19:52,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 11:19:52,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 11:19:52,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 11:19:52,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 11:19:52,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 11:19:52,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 11:19:52,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 11:19:52,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 11:19:52,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:19:52,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:19:52,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:19:52,353 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 [2020-07-21 11:19:52,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:19:52,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:19:52,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:19:52,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:19:52,372 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:19:52,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:19:52,373 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:19:52,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:19:52,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:19:52,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:19:52,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:19:52,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:19:52,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:19:52,374 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:19:52,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:19:52,375 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:19:52,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:19:52,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:19:52,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:19:52,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:19:52,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:19:52,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:19:52,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:19:52,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:19:52,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:19:52,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:19:52,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:19:52,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:19:52,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:19:52,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 11:19:52,730 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:19:52,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:19:52,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:19:52,761 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:19:52,761 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:19:52,763 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alt_test.i [2020-07-21 11:19:52,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e017a01f1/63f4d551fd494bbd936e977d96786f1f/FLAG503d5aa0d [2020-07-21 11:19:53,550 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:19:53,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i [2020-07-21 11:19:53,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e017a01f1/63f4d551fd494bbd936e977d96786f1f/FLAG503d5aa0d [2020-07-21 11:19:53,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e017a01f1/63f4d551fd494bbd936e977d96786f1f [2020-07-21 11:19:53,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:19:53,774 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:19:53,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:19:53,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:19:53,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:19:53,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:19:53" (1/1) ... [2020-07-21 11:19:53,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d0b3246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:53, skipping insertion in model container [2020-07-21 11:19:53,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:19:53" (1/1) ... [2020-07-21 11:19:53,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:19:53,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:19:54,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:19:54,456 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:19:54,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:19:54,650 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:19:54,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:54 WrapperNode [2020-07-21 11:19:54,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:19:54,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:19:54,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:19:54,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:19:54,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:54" (1/1) ... [2020-07-21 11:19:54,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:54" (1/1) ... [2020-07-21 11:19:54,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:54" (1/1) ... [2020-07-21 11:19:54,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:54" (1/1) ... [2020-07-21 11:19:54,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:54" (1/1) ... [2020-07-21 11:19:54,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:54" (1/1) ... [2020-07-21 11:19:54,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:54" (1/1) ... [2020-07-21 11:19:54,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:19:54,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:19:54,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:19:54,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:19:54,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:54" (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 [2020-07-21 11:19:54,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:19:54,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:19:54,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-21 11:19:54,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:19:54,825 INFO L138 BoogieDeclarations]: Found implementation of procedure l_malloc [2020-07-21 11:19:54,826 INFO L138 BoogieDeclarations]: Found implementation of procedure l_free [2020-07-21 11:19:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:19:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-21 11:19:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-21 11:19:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-21 11:19:54,827 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-21 11:19:54,827 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-21 11:19:54,827 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-21 11:19:54,827 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-21 11:19:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-21 11:19:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-21 11:19:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-21 11:19:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-21 11:19:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-21 11:19:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-21 11:19:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-21 11:19:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-21 11:19:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-21 11:19:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-21 11:19:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-21 11:19:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-21 11:19:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-21 11:19:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-21 11:19:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-21 11:19:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-21 11:19:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-21 11:19:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-21 11:19:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-21 11:19:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-21 11:19:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-21 11:19:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-21 11:19:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-21 11:19:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-21 11:19:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-21 11:19:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-21 11:19:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-21 11:19:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-21 11:19:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-21 11:19:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-21 11:19:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-21 11:19:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 11:19:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-21 11:19:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-21 11:19:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-21 11:19:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-21 11:19:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-21 11:19:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-21 11:19:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-21 11:19:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-21 11:19:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-21 11:19:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-21 11:19:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-21 11:19:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-21 11:19:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-21 11:19:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-21 11:19:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-21 11:19:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-21 11:19:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-21 11:19:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-21 11:19:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-21 11:19:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-21 11:19:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-21 11:19:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-21 11:19:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-21 11:19:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-21 11:19:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-21 11:19:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-21 11:19:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-21 11:19:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-21 11:19:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-21 11:19:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-21 11:19:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-21 11:19:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-21 11:19:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-21 11:19:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-21 11:19:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-21 11:19:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-21 11:19:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-21 11:19:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-21 11:19:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-21 11:19:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-21 11:19:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-21 11:19:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-21 11:19:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-21 11:19:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-21 11:19:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-21 11:19:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-21 11:19:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-21 11:19:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-21 11:19:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-21 11:19:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-21 11:19:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-21 11:19:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-21 11:19:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-21 11:19:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-21 11:19:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-21 11:19:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-21 11:19:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-21 11:19:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-21 11:19:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-21 11:19:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-21 11:19:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-21 11:19:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-21 11:19:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 11:19:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 11:19:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 11:19:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 11:19:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 11:19:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 11:19:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 11:19:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 11:19:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 11:19:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 11:19:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 11:19:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 11:19:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 11:19:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 11:19:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 11:19:54,848 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 11:19:54,848 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 11:19:54,848 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 11:19:54,848 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 11:19:54,848 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 11:19:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 11:19:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 11:19:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 11:19:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 11:19:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 11:19:54,850 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 11:19:54,850 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 11:19:54,850 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 11:19:54,850 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 11:19:54,851 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 11:19:54,851 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 11:19:54,851 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 11:19:54,851 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 11:19:54,851 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 11:19:54,851 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 11:19:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 11:19:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 11:19:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 11:19:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 11:19:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 11:19:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 11:19:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 11:19:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 11:19:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 11:19:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 11:19:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 11:19:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 11:19:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 11:19:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 11:19:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 11:19:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 11:19:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 11:19:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 11:19:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 11:19:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 11:19:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 11:19:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 11:19:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 11:19:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:19:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 11:19:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 11:19:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 11:19:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 11:19:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 11:19:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2020-07-21 11:19:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 11:19:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 11:19:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 11:19:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 11:19:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 11:19:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 11:19:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 11:19:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 11:19:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 11:19:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 11:19:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 11:19:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 11:19:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 11:19:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 11:19:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 11:19:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 11:19:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 11:19:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 11:19:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 11:19:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 11:19:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 11:19:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 11:19:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 11:19:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 11:19:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 11:19:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 11:19:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 11:19:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 11:19:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 11:19:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 11:19:54,863 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 11:19:54,863 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 11:19:54,863 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 11:19:54,863 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 11:19:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure posix_openpt [2020-07-21 11:19:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 11:19:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-21 11:19:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure l_malloc [2020-07-21 11:19:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure l_free [2020-07-21 11:19:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:19:54,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 11:19:54,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 11:19:54,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:19:54,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:19:55,499 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:19:55,500 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 11:19:55,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:19:55 BoogieIcfgContainer [2020-07-21 11:19:55,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:19:55,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:19:55,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:19:55,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:19:55,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:19:53" (1/3) ... [2020-07-21 11:19:55,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3799d53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:19:55, skipping insertion in model container [2020-07-21 11:19:55,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:54" (2/3) ... [2020-07-21 11:19:55,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3799d53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:19:55, skipping insertion in model container [2020-07-21 11:19:55,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:19:55" (3/3) ... [2020-07-21 11:19:55,514 INFO L109 eAbstractionObserver]: Analyzing ICFG alt_test.i [2020-07-21 11:19:55,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:19:55,536 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:19:55,553 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:19:55,578 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:19:55,578 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:19:55,579 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:19:55,579 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:19:55,579 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:19:55,579 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:19:55,579 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:19:55,580 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:19:55,603 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-07-21 11:19:55,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 11:19:55,615 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:19:55,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:19:55,617 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:19:55,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:19:55,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1074821315, now seen corresponding path program 1 times [2020-07-21 11:19:55,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:19:55,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61799799] [2020-07-21 11:19:55,637 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:19:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:19:55,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:19:55,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:19:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:19:56,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:19:56,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61799799] [2020-07-21 11:19:56,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:19:56,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:19:56,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209392794] [2020-07-21 11:19:56,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:19:56,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:19:56,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:19:56,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:19:56,109 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-07-21 11:19:56,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:19:56,160 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-07-21 11:19:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:19:56,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-21 11:19:56,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:19:56,171 INFO L225 Difference]: With dead ends: 51 [2020-07-21 11:19:56,171 INFO L226 Difference]: Without dead ends: 24 [2020-07-21 11:19:56,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:19:56,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-21 11:19:56,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-21 11:19:56,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-21 11:19:56,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-07-21 11:19:56,221 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 19 [2020-07-21 11:19:56,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:19:56,222 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-07-21 11:19:56,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:19:56,222 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-07-21 11:19:56,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 11:19:56,223 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:19:56,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:19:56,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:19:56,437 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:19:56,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:19:56,438 INFO L82 PathProgramCache]: Analyzing trace with hash 373756737, now seen corresponding path program 1 times [2020-07-21 11:19:56,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:19:56,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264780771] [2020-07-21 11:19:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:19:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:19:56,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 11:19:56,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:19:56,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:19:56,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:19:56,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264780771] [2020-07-21 11:19:56,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:19:56,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:19:56,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125242955] [2020-07-21 11:19:56,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:19:56,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:19:56,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:19:56,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:19:56,665 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 3 states. [2020-07-21 11:19:56,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:19:56,683 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-07-21 11:19:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:19:56,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-21 11:19:56,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:19:56,686 INFO L225 Difference]: With dead ends: 31 [2020-07-21 11:19:56,686 INFO L226 Difference]: Without dead ends: 27 [2020-07-21 11:19:56,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:19:56,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-21 11:19:56,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-21 11:19:56,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 11:19:56,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-07-21 11:19:56,694 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-07-21 11:19:56,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:19:56,695 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-07-21 11:19:56,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:19:56,695 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-07-21 11:19:56,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 11:19:56,696 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:19:56,696 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:19:56,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:19:56,910 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:19:56,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:19:56,912 INFO L82 PathProgramCache]: Analyzing trace with hash -568191789, now seen corresponding path program 1 times [2020-07-21 11:19:56,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:19:56,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174889222] [2020-07-21 11:19:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:19:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:19:57,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 11:19:57,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:19:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:19:57,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:19:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:19:57,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174889222] [2020-07-21 11:19:57,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:19:57,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-07-21 11:19:57,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618384284] [2020-07-21 11:19:57,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 11:19:57,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:19:57,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 11:19:57,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-07-21 11:19:57,374 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 12 states. [2020-07-21 11:19:57,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:19:57,571 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-07-21 11:19:57,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 11:19:57,572 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-07-21 11:19:57,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:19:57,574 INFO L225 Difference]: With dead ends: 40 [2020-07-21 11:19:57,574 INFO L226 Difference]: Without dead ends: 27 [2020-07-21 11:19:57,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-07-21 11:19:57,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-21 11:19:57,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-21 11:19:57,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 11:19:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-21 11:19:57,593 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2020-07-21 11:19:57,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:19:57,596 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-21 11:19:57,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 11:19:57,597 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-21 11:19:57,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 11:19:57,598 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:19:57,598 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:19:57,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:19:57,799 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:19:57,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:19:57,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1903526385, now seen corresponding path program 1 times [2020-07-21 11:19:57,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:19:57,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390537640] [2020-07-21 11:19:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:19:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 11:19:57,948 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 11:19:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 11:19:57,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 11:19:57,994 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 11:19:57,994 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 11:19:58,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:19:58,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:19:58 BoogieIcfgContainer [2020-07-21 11:19:58,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:19:58,267 INFO L168 Benchmark]: Toolchain (without parser) took 4493.28 ms. Allocated memory was 141.6 MB in the beginning and 257.9 MB in the end (delta: 116.4 MB). Free memory was 97.8 MB in the beginning and 126.1 MB in the end (delta: -28.4 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. [2020-07-21 11:19:58,268 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 141.6 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 11:19:58,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 876.33 ms. Allocated memory was 141.6 MB in the beginning and 200.3 MB in the end (delta: 58.7 MB). Free memory was 97.3 MB in the beginning and 150.0 MB in the end (delta: -52.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-07-21 11:19:58,270 INFO L168 Benchmark]: Boogie Preprocessor took 90.41 ms. Allocated memory is still 200.3 MB. Free memory was 150.0 MB in the beginning and 147.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:19:58,271 INFO L168 Benchmark]: RCFGBuilder took 760.95 ms. Allocated memory is still 200.3 MB. Free memory was 147.0 MB in the beginning and 88.3 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. [2020-07-21 11:19:58,272 INFO L168 Benchmark]: TraceAbstraction took 2758.45 ms. Allocated memory was 200.3 MB in the beginning and 257.9 MB in the end (delta: 57.7 MB). Free memory was 88.3 MB in the beginning and 126.1 MB in the end (delta: -37.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:19:58,276 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 141.6 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 876.33 ms. Allocated memory was 141.6 MB in the beginning and 200.3 MB in the end (delta: 58.7 MB). Free memory was 97.3 MB in the beginning and 150.0 MB in the end (delta: -52.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.41 ms. Allocated memory is still 200.3 MB. Free memory was 150.0 MB in the beginning and 147.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 760.95 ms. Allocated memory is still 200.3 MB. Free memory was 147.0 MB in the beginning and 88.3 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2758.45 ms. Allocated memory was 200.3 MB in the beginning and 257.9 MB in the end (delta: 57.7 MB). Free memory was 88.3 MB in the beginning and 126.1 MB in the end (delta: -37.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1601]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1606] int globalState = 0; VAL [\old(globalState)=7, globalState=0] [L1612] CALL, EXPR l_malloc(sizeof(int)) VAL [\old(globalState)=0, \old(size)=4, globalState=0] [L1619] void *retVal = malloc(size); VAL [\old(globalState)=0, \old(size)=4, globalState=0, malloc(size)={-1:0}, retVal={-1:0}, size=4] [L1620] COND TRUE retVal != ((void *)0) [L1621] globalState=1 VAL [\old(globalState)=0, \old(size)=4, globalState=1, malloc(size)={-1:0}, retVal={-1:0}, size=4] [L1622] return retVal; VAL [\old(globalState)=0, \old(size)=4, \result={-1:0}, globalState=1, malloc(size)={-1:0}, retVal={-1:0}, size=4] [L1612] RET, EXPR l_malloc(sizeof(int)) VAL [\old(argc)=9, \old(globalState)=0, argc=9, argv={10:8}, argv={10:8}, globalState=1, l_malloc(sizeof(int))={-1:0}] [L1612] int *a = (int*) l_malloc(sizeof(int)); [L1613] CALL l_free(a) VAL [\old(globalState)=1, globalState=1, ptr={-1:0}] [L1629] COND TRUE ptr!=((void *)0) VAL [\old(globalState)=1, globalState=1, ptr={-1:0}, ptr={-1:0}] [L1629] (globalState == 1) ? (0) : __blast_assert () VAL [\old(globalState)=1, globalState=1, ptr={-1:0}, ptr={-1:0}] [L1630] globalState = 0 [L1613] RET l_free(a) VAL [\old(argc)=9, \old(globalState)=0, a={-1:0}, argc=9, argv={10:8}, argv={10:8}, globalState=0] [L1614] CALL l_free(a) VAL [\old(globalState)=0, globalState=0, ptr={-1:0}] [L1629] COND TRUE ptr!=((void *)0) VAL [\old(globalState)=0, globalState=0, ptr={-1:0}, ptr={-1:0}] [L1629] (globalState == 1) ? (0) : __blast_assert () VAL [\old(globalState)=0, globalState=0, ptr={-1:0}, ptr={-1:0}] [L1629] CALL __blast_assert () VAL [\old(globalState)=0, globalState=0] [L1601] __VERIFIER_error() VAL [\old(globalState)=0, globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 18 SDslu, 156 SDs, 0 SdLazy, 69 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 4086 SizeOfPredicates, 10 NumberOfNonLiveVariables, 345 ConjunctsInSsa, 37 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...