/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -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 13:39:55,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 13:39:55,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 13:39:55,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 13:39:55,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 13:39:55,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 13:39:55,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 13:39:55,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 13:39:55,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 13:39:55,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 13:39:55,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 13:39:55,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 13:39:55,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:39:55,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:39:55,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:39:55,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:39:55,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:39:55,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:39:55,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:39:55,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:39:55,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:39:55,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:39:55,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:39:55,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:39:55,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 13:39:55,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 13:39:55,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 13:39:55,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 13:39:55,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 13:39:55,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 13:39:55,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 13:39:55,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 13:39:55,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 13:39:55,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 13:39:55,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 13:39:55,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 13:39:55,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 13:39:55,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 13:39:55,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:39:55,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:39:55,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:39:55,219 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 13:39:55,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:39:55,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:39:55,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:39:55,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:39:55,236 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:39:55,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:39:55,237 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:39:55,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:39:55,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:39:55,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:39:55,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:39:55,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:39:55,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:39:55,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:39:55,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:39:55,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:39:55,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:39:55,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:39:55,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:39:55,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:39:55,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:39:55,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:39:55,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:39:55,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:39:55,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:39:55,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:39:55,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:39:55,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:39:55,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:39:55,241 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 -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 13:39:55,515 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:39:55,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:39:55,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:39:55,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:39:55,534 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:39:55,534 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alt_test.i [2020-07-21 13:39:55,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da9ca471/c3b568262f024c629c925437a4aa7842/FLAG112f56df2 [2020-07-21 13:39:56,181 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:39:56,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i [2020-07-21 13:39:56,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da9ca471/c3b568262f024c629c925437a4aa7842/FLAG112f56df2 [2020-07-21 13:39:56,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da9ca471/c3b568262f024c629c925437a4aa7842 [2020-07-21 13:39:56,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:39:56,492 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:39:56,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:39:56,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:39:56,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:39:56,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:39:56" (1/1) ... [2020-07-21 13:39:56,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4989d824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:39:56, skipping insertion in model container [2020-07-21 13:39:56,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:39:56" (1/1) ... [2020-07-21 13:39:56,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:39:56,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:39:57,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:39:57,081 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:39:57,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:39:57,279 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:39:57,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:39:57 WrapperNode [2020-07-21 13:39:57,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:39:57,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:39:57,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:39:57,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:39:57,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:39:57" (1/1) ... [2020-07-21 13:39:57,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:39:57" (1/1) ... [2020-07-21 13:39:57,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:39:57" (1/1) ... [2020-07-21 13:39:57,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:39:57" (1/1) ... [2020-07-21 13:39:57,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:39:57" (1/1) ... [2020-07-21 13:39:57,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:39:57" (1/1) ... [2020-07-21 13:39:57,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:39:57" (1/1) ... [2020-07-21 13:39:57,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:39:57,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:39:57,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:39:57,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:39:57,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:39:57" (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 13:39:57,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:39:57,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:39:57,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-21 13:39:57,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:39:57,438 INFO L138 BoogieDeclarations]: Found implementation of procedure l_malloc [2020-07-21 13:39:57,438 INFO L138 BoogieDeclarations]: Found implementation of procedure l_free [2020-07-21 13:39:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:39:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-21 13:39:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-21 13:39:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-21 13:39:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-21 13:39:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-21 13:39:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-21 13:39:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-21 13:39:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-21 13:39:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-21 13:39:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-21 13:39:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-21 13:39:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-21 13:39:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-21 13:39:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-21 13:39:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-21 13:39:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-21 13:39:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-21 13:39:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-21 13:39:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-21 13:39:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-21 13:39:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-21 13:39:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-21 13:39:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-21 13:39:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-21 13:39:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-21 13:39:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-21 13:39:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-21 13:39:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-21 13:39:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-21 13:39:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-21 13:39:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-21 13:39:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-21 13:39:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-21 13:39:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-21 13:39:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-21 13:39:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-21 13:39:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-21 13:39:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-21 13:39:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 13:39:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-21 13:39:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-21 13:39:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-21 13:39:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-21 13:39:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-21 13:39:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-21 13:39:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-21 13:39:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-21 13:39:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-21 13:39:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-21 13:39:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-21 13:39:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-21 13:39:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-21 13:39:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-21 13:39:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-21 13:39:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-21 13:39:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-21 13:39:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-21 13:39:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-21 13:39:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-21 13:39:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-21 13:39:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-21 13:39:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-21 13:39:57,454 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-21 13:39:57,454 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-21 13:39:57,454 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-21 13:39:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-21 13:39:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-21 13:39:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-21 13:39:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-21 13:39:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-21 13:39:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-21 13:39:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-21 13:39:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-21 13:39:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-21 13:39:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-21 13:39:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-21 13:39:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-21 13:39:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-21 13:39:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-21 13:39:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-21 13:39:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-21 13:39:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-21 13:39:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-21 13:39:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-21 13:39:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-21 13:39:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-21 13:39:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-21 13:39:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-21 13:39:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-21 13:39:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-21 13:39:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-21 13:39:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-21 13:39:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-21 13:39:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-21 13:39:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-21 13:39:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-21 13:39:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-21 13:39:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-21 13:39:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-21 13:39:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-21 13:39:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-21 13:39:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 13:39:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 13:39:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 13:39:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 13:39:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 13:39:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 13:39:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 13:39:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 13:39:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 13:39:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 13:39:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 13:39:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 13:39:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 13:39:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 13:39:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 13:39:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 13:39:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 13:39:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 13:39:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 13:39:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 13:39:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 13:39:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 13:39:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 13:39:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 13:39:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 13:39:57,471 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 13:39:57,471 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 13:39:57,471 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 13:39:57,471 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 13:39:57,472 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 13:39:57,472 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 13:39:57,473 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 13:39:57,473 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 13:39:57,473 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 13:39:57,473 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 13:39:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 13:39:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 13:39:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 13:39:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 13:39:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 13:39:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 13:39:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 13:39:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 13:39:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 13:39:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 13:39:57,482 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 13:39:57,483 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 13:39:57,483 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 13:39:57,483 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 13:39:57,483 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 13:39:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 13:39:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 13:39:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 13:39:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 13:39:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 13:39:57,484 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 13:39:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 13:39:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 13:39:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 13:39:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 13:39:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 13:39:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 13:39:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 13:39:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 13:39:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2020-07-21 13:39:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 13:39:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 13:39:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 13:39:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 13:39:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 13:39:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 13:39:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 13:39:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 13:39:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 13:39:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 13:39:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 13:39:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 13:39:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 13:39:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 13:39:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 13:39:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 13:39:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 13:39:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 13:39:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 13:39:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 13:39:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 13:39:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 13:39:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 13:39:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 13:39:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 13:39:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 13:39:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 13:39:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 13:39:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 13:39:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 13:39:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 13:39:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 13:39:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 13:39:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 13:39:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure posix_openpt [2020-07-21 13:39:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 13:39:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-21 13:39:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure l_malloc [2020-07-21 13:39:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure l_free [2020-07-21 13:39:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:39:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 13:39:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 13:39:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:39:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:39:58,109 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:39:58,110 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 13:39:58,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:39:58 BoogieIcfgContainer [2020-07-21 13:39:58,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:39:58,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:39:58,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:39:58,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:39:58,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:39:56" (1/3) ... [2020-07-21 13:39:58,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5888373a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:39:58, skipping insertion in model container [2020-07-21 13:39:58,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:39:57" (2/3) ... [2020-07-21 13:39:58,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5888373a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:39:58, skipping insertion in model container [2020-07-21 13:39:58,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:39:58" (3/3) ... [2020-07-21 13:39:58,122 INFO L109 eAbstractionObserver]: Analyzing ICFG alt_test.i [2020-07-21 13:39:58,132 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:39:58,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 13:39:58,154 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 13:39:58,178 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:39:58,178 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:39:58,192 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:39:58,192 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:39:58,193 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:39:58,193 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:39:58,193 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:39:58,193 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:39:58,212 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-07-21 13:39:58,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 13:39:58,218 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:39:58,219 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 13:39:58,220 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:39:58,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:39:58,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1074821315, now seen corresponding path program 1 times [2020-07-21 13:39:58,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:39:58,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626858245] [2020-07-21 13:39:58,236 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 13:39:58,463 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:39:58,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:39:58,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 13:39:58,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:39:58,527 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 13:39:58,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:39:58,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626858245] [2020-07-21 13:39:58,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:39:58,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:39:58,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460105651] [2020-07-21 13:39:58,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:39:58,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:39:58,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:39:58,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:39:58,561 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-07-21 13:39:58,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:39:58,608 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-07-21 13:39:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:39:58,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-21 13:39:58,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:39:58,625 INFO L225 Difference]: With dead ends: 51 [2020-07-21 13:39:58,625 INFO L226 Difference]: Without dead ends: 24 [2020-07-21 13:39:58,632 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 13:39:58,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-21 13:39:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-21 13:39:58,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-21 13:39:58,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-07-21 13:39:58,680 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 19 [2020-07-21 13:39:58,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:39:58,680 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-07-21 13:39:58,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:39:58,681 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-07-21 13:39:58,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 13:39:58,682 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:39:58,682 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 13:39:58,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:39:58,892 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:39:58,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:39:58,893 INFO L82 PathProgramCache]: Analyzing trace with hash 373756737, now seen corresponding path program 1 times [2020-07-21 13:39:58,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:39:58,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40871017] [2020-07-21 13:39:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 13:39:59,032 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:39:59,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:39:59,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 13:39:59,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:39:59,048 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 13:39:59,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:39:59,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40871017] [2020-07-21 13:39:59,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:39:59,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:39:59,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762822901] [2020-07-21 13:39:59,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:39:59,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:39:59,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:39:59,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:39:59,052 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 3 states. [2020-07-21 13:39:59,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:39:59,071 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-07-21 13:39:59,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:39:59,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-21 13:39:59,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:39:59,073 INFO L225 Difference]: With dead ends: 31 [2020-07-21 13:39:59,073 INFO L226 Difference]: Without dead ends: 27 [2020-07-21 13:39:59,074 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 13:39:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-21 13:39:59,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-21 13:39:59,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 13:39:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-07-21 13:39:59,081 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-07-21 13:39:59,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:39:59,082 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-07-21 13:39:59,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:39:59,082 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-07-21 13:39:59,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 13:39:59,083 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:39:59,083 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 13:39:59,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:39:59,298 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:39:59,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:39:59,299 INFO L82 PathProgramCache]: Analyzing trace with hash -568191789, now seen corresponding path program 1 times [2020-07-21 13:39:59,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:39:59,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274871921] [2020-07-21 13:39:59,301 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 13:39:59,487 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:39:59,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:39:59,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 13:39:59,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:39:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:39:59,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:39:59,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274871921] [2020-07-21 13:39:59,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:39:59,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 13:39:59,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166674281] [2020-07-21 13:39:59,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 13:39:59,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:39:59,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 13:39:59,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-21 13:39:59,586 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 9 states. [2020-07-21 13:39:59,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:39:59,690 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-07-21 13:39:59,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:39:59,691 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-07-21 13:39:59,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:39:59,692 INFO L225 Difference]: With dead ends: 40 [2020-07-21 13:39:59,692 INFO L226 Difference]: Without dead ends: 27 [2020-07-21 13:39:59,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-21 13:39:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-21 13:39:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-21 13:39:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 13:39:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-21 13:39:59,703 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2020-07-21 13:39:59,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:39:59,705 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-21 13:39:59,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 13:39:59,705 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-21 13:39:59,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 13:39:59,706 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:39:59,706 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 13:39:59,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:39:59,920 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:39:59,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:39:59,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1903526385, now seen corresponding path program 1 times [2020-07-21 13:39:59,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:39:59,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190263609] [2020-07-21 13:39:59,921 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 13:40:00,048 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:40:00,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 13:40:00,048 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 13:40:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 13:40:00,061 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 13:40:00,086 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 13:40:00,086 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 13:40:00,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:00,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:40:00 BoogieIcfgContainer [2020-07-21 13:40:00,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:40:00,355 INFO L168 Benchmark]: Toolchain (without parser) took 3864.60 ms. Allocated memory was 137.4 MB in the beginning and 253.8 MB in the end (delta: 116.4 MB). Free memory was 98.7 MB in the beginning and 141.6 MB in the end (delta: -42.9 MB). Peak memory consumption was 73.5 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:00,356 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory is still 118.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 13:40:00,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.28 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 98.3 MB in the beginning and 151.9 MB in the end (delta: -53.6 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:00,358 INFO L168 Benchmark]: Boogie Preprocessor took 63.77 ms. Allocated memory is still 201.9 MB. Free memory was 151.9 MB in the beginning and 148.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:00,359 INFO L168 Benchmark]: RCFGBuilder took 768.39 ms. Allocated memory is still 201.9 MB. Free memory was 148.9 MB in the beginning and 89.9 MB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:00,361 INFO L168 Benchmark]: TraceAbstraction took 2237.57 ms. Allocated memory was 201.9 MB in the beginning and 253.8 MB in the end (delta: 51.9 MB). Free memory was 89.9 MB in the beginning and 141.6 MB in the end (delta: -51.7 MB). Peak memory consumption was 214.1 kB. Max. memory is 7.1 GB. [2020-07-21 13:40:00,367 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory is still 118.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 787.28 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 98.3 MB in the beginning and 151.9 MB in the end (delta: -53.6 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.77 ms. Allocated memory is still 201.9 MB. Free memory was 151.9 MB in the beginning and 148.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 768.39 ms. Allocated memory is still 201.9 MB. Free memory was 148.9 MB in the beginning and 89.9 MB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2237.57 ms. Allocated memory was 201.9 MB in the beginning and 253.8 MB in the end (delta: 51.9 MB). Free memory was 89.9 MB in the beginning and 141.6 MB in the end (delta: -51.7 MB). Peak memory consumption was 214.1 kB. 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)=10, \old(globalState)=0, argc=10, argv={9:8}, argv={9:8}, 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)=10, \old(globalState)=0, a={-1:0}, argc=10, argv={9:8}, argv={9:8}, 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: 2.1s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 18 SDslu, 152 SDs, 0 SdLazy, 56 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s 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, 0.1s InterpolantComputationTime, 89 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 2166 SizeOfPredicates, 6 NumberOfNonLiveVariables, 259 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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...