/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/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 13:40:30,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 13:40:30,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 13:40:30,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 13:40:30,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 13:40:30,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 13:40:30,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 13:40:30,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 13:40:30,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 13:40:30,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 13:40:30,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 13:40:30,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 13:40:30,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:40:30,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:40:30,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:40:30,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:40:30,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:40:30,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:40:30,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:40:30,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:40:30,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:40:30,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:40:30,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:40:30,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:40:30,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 13:40:30,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 13:40:30,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 13:40:30,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 13:40:30,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 13:40:30,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 13:40:30,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 13:40:30,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 13:40:30,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 13:40:30,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 13:40:30,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 13:40:30,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 13:40:30,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 13:40:30,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 13:40:30,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:40:30,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:40:30,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:40:30,400 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 13:40:30,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:40:30,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:40:30,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:40:30,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:40:30,417 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:40:30,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:40:30,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:40:30,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:40:30,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:40:30,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:40:30,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:40:30,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:40:30,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:40:30,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:40:30,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:40:30,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:40:30,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:40:30,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:40:30,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:40:30,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:40:30,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:40:30,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:40:30,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:40:30,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:40:30,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:40:30,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:40:30,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:30,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:40:30,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:40:30,422 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 13:40:30,756 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:40:30,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:40:30,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:40:30,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:40:30,782 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:40:30,784 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-07-21 13:40:30,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b8d85ca/d45bb86e7f264aa7ad1c2ba7367dbbea/FLAGad35d9945 [2020-07-21 13:40:31,390 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:40:31,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-07-21 13:40:31,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b8d85ca/d45bb86e7f264aa7ad1c2ba7367dbbea/FLAGad35d9945 [2020-07-21 13:40:31,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b8d85ca/d45bb86e7f264aa7ad1c2ba7367dbbea [2020-07-21 13:40:31,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:40:31,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:40:31,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:40:31,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:40:31,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:40:31,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:40:31" (1/1) ... [2020-07-21 13:40:31,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@793f9d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:31, skipping insertion in model container [2020-07-21 13:40:31,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:40:31" (1/1) ... [2020-07-21 13:40:31,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:40:31,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:40:32,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:40:32,097 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:40:32,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:40:32,313 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:40:32,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:32 WrapperNode [2020-07-21 13:40:32,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:40:32,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:40:32,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:40:32,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:40:32,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:32" (1/1) ... [2020-07-21 13:40:32,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:32" (1/1) ... [2020-07-21 13:40:32,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:32" (1/1) ... [2020-07-21 13:40:32,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:32" (1/1) ... [2020-07-21 13:40:32,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:32" (1/1) ... [2020-07-21 13:40:32,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:32" (1/1) ... [2020-07-21 13:40:32,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:32" (1/1) ... [2020-07-21 13:40:32,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:40:32,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:40:32,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:40:32,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:40:32,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:32" (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 13:40:32,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:40:32,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:40:32,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-21 13:40:32,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-07-21 13:40:32,443 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-07-21 13:40:32,443 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-21 13:40:32,444 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-21 13:40:32,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:40:32,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:40:32,445 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-21 13:40:32,445 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-21 13:40:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-21 13:40:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-21 13:40:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-21 13:40:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-21 13:40:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-21 13:40:32,447 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-21 13:40:32,447 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-21 13:40:32,447 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-21 13:40:32,447 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-21 13:40:32,447 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-21 13:40:32,448 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-21 13:40:32,448 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-21 13:40:32,448 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-21 13:40:32,448 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-21 13:40:32,449 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-21 13:40:32,449 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-21 13:40:32,450 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-21 13:40:32,450 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-21 13:40:32,450 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-21 13:40:32,450 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-21 13:40:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-21 13:40:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-21 13:40:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-21 13:40:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-21 13:40:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-21 13:40:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-21 13:40:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-21 13:40:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-21 13:40:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-21 13:40:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-21 13:40:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-21 13:40:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-21 13:40:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-21 13:40:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-21 13:40:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-21 13:40:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-21 13:40:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-21 13:40:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 13:40:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-21 13:40:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-21 13:40:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-21 13:40:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-21 13:40:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-21 13:40:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-21 13:40:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-21 13:40:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-21 13:40:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-21 13:40:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-21 13:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-21 13:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-21 13:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-21 13:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-21 13:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-21 13:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-21 13:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-21 13:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-21 13:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-21 13:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-21 13:40:32,456 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-21 13:40:32,456 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-21 13:40:32,456 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-21 13:40:32,456 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-21 13:40:32,456 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-21 13:40:32,456 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-21 13:40:32,457 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-21 13:40:32,457 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-21 13:40:32,457 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-21 13:40:32,458 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-21 13:40:32,458 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-21 13:40:32,458 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-21 13:40:32,458 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-21 13:40:32,458 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-21 13:40:32,458 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-21 13:40:32,458 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-21 13:40:32,459 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-21 13:40:32,459 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-21 13:40:32,459 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-21 13:40:32,459 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-21 13:40:32,459 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-21 13:40:32,459 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-21 13:40:32,459 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-21 13:40:32,459 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-21 13:40:32,459 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-21 13:40:32,459 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-21 13:40:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-21 13:40:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-21 13:40:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-21 13:40:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-21 13:40:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-21 13:40:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-21 13:40:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-21 13:40:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-21 13:40:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-21 13:40:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-21 13:40:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-21 13:40:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-21 13:40:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-21 13:40:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-21 13:40:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-21 13:40:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-21 13:40:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 13:40:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 13:40:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 13:40:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 13:40:32,462 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 13:40:32,462 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-21 13:40:32,462 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 13:40:32,462 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-21 13:40:32,462 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-21 13:40:32,462 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-21 13:40:32,462 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-21 13:40:32,463 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-21 13:40:32,463 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-21 13:40:32,463 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-21 13:40:32,463 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-21 13:40:32,463 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-21 13:40:32,463 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-21 13:40:32,464 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-21 13:40:32,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 13:40:32,464 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-07-21 13:40:32,464 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-07-21 13:40:32,464 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-21 13:40:32,464 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-21 13:40:32,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:40:32,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:40:32,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 13:40:32,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 13:40:32,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:40:32,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 13:40:32,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 13:40:32,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 13:40:32,956 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:40:32,957 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 13:40:32,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:40:32 BoogieIcfgContainer [2020-07-21 13:40:32,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:40:32,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:40:32,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:40:32,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:40:32,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:40:31" (1/3) ... [2020-07-21 13:40:32,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f065de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:40:32, skipping insertion in model container [2020-07-21 13:40:32,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:32" (2/3) ... [2020-07-21 13:40:32,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f065de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:40:32, skipping insertion in model container [2020-07-21 13:40:32,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:40:32" (3/3) ... [2020-07-21 13:40:32,969 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-07-21 13:40:32,980 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:40:32,988 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 13:40:33,002 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 13:40:33,027 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:40:33,028 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:40:33,028 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:40:33,028 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:40:33,029 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:40:33,029 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:40:33,029 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:40:33,029 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:40:33,049 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-21 13:40:33,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 13:40:33,058 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:40:33,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:40:33,059 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:40:33,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:40:33,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1135050545, now seen corresponding path program 1 times [2020-07-21 13:40:33,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:40:33,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897389471] [2020-07-21 13:40:33,076 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 13:40:33,271 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:40:33,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:40:33,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 13:40:33,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:40:33,362 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 13:40:33,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:40:33,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897389471] [2020-07-21 13:40:33,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:40:33,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 13:40:33,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472824547] [2020-07-21 13:40:33,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 13:40:33,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:40:33,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 13:40:33,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 13:40:33,388 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 6 states. [2020-07-21 13:40:33,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:40:33,474 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2020-07-21 13:40:33,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 13:40:33,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-07-21 13:40:33,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:40:33,486 INFO L225 Difference]: With dead ends: 84 [2020-07-21 13:40:33,486 INFO L226 Difference]: Without dead ends: 39 [2020-07-21 13:40:33,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:40:33,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-21 13:40:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-21 13:40:33,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-21 13:40:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-07-21 13:40:33,538 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 13 [2020-07-21 13:40:33,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:40:33,538 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-07-21 13:40:33,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 13:40:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-07-21 13:40:33,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 13:40:33,541 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:40:33,541 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:40:33,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:33,755 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:40:33,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:40:33,755 INFO L82 PathProgramCache]: Analyzing trace with hash -925661111, now seen corresponding path program 1 times [2020-07-21 13:40:33,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:40:33,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088562648] [2020-07-21 13:40:33,756 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 13:40:33,886 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:40:33,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:40:33,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 33 conjunts are in the unsatisfiable core [2020-07-21 13:40:33,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:40:34,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 13:40:34,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:40:34,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088562648] [2020-07-21 13:40:34,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:40:34,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 13:40:34,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167221421] [2020-07-21 13:40:34,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 13:40:34,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:40:34,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 13:40:34,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-21 13:40:34,024 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 11 states. [2020-07-21 13:40:34,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:40:34,070 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-07-21 13:40:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:40:34,070 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-07-21 13:40:34,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:40:34,072 INFO L225 Difference]: With dead ends: 64 [2020-07-21 13:40:34,072 INFO L226 Difference]: Without dead ends: 45 [2020-07-21 13:40:34,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-21 13:40:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-21 13:40:34,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-07-21 13:40:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-21 13:40:34,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-07-21 13:40:34,084 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 38 [2020-07-21 13:40:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:40:34,085 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-07-21 13:40:34,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 13:40:34,085 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-07-21 13:40:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 13:40:34,086 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:40:34,087 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:40:34,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:34,301 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:40:34,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:40:34,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1219064118, now seen corresponding path program 1 times [2020-07-21 13:40:34,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:40:34,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352718281] [2020-07-21 13:40:34,304 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 13:40:34,433 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:40:34,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:40:34,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 13:40:34,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:40:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 13:40:34,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:40:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 13:40:34,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352718281] [2020-07-21 13:40:34,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:40:34,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-07-21 13:40:34,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270933669] [2020-07-21 13:40:34,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 13:40:34,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:40:34,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 13:40:34,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 13:40:34,664 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 7 states. [2020-07-21 13:40:34,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:40:34,689 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-07-21 13:40:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:40:34,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-07-21 13:40:34,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:40:34,691 INFO L225 Difference]: With dead ends: 65 [2020-07-21 13:40:34,691 INFO L226 Difference]: Without dead ends: 39 [2020-07-21 13:40:34,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 13:40:34,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-21 13:40:34,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-21 13:40:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-21 13:40:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-07-21 13:40:34,699 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 38 [2020-07-21 13:40:34,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:40:34,699 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-07-21 13:40:34,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 13:40:34,699 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-07-21 13:40:34,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 13:40:34,700 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:40:34,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:40:34,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:34,916 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:40:34,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:40:34,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1188044311, now seen corresponding path program 1 times [2020-07-21 13:40:34,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:40:34,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431037188] [2020-07-21 13:40:34,918 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 13:40:35,054 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:40:35,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:40:35,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 13:40:35,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:40:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 13:40:35,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:40:35,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431037188] [2020-07-21 13:40:35,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:40:35,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-21 13:40:35,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078348328] [2020-07-21 13:40:35,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-21 13:40:35,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:40:35,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-21 13:40:35,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-21 13:40:35,244 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 13 states. [2020-07-21 13:40:35,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:40:35,784 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-07-21 13:40:35,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 13:40:35,785 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-07-21 13:40:35,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:40:35,789 INFO L225 Difference]: With dead ends: 71 [2020-07-21 13:40:35,789 INFO L226 Difference]: Without dead ends: 60 [2020-07-21 13:40:35,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2020-07-21 13:40:35,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-21 13:40:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-07-21 13:40:35,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-21 13:40:35,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-07-21 13:40:35,800 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 38 [2020-07-21 13:40:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:40:35,801 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-07-21 13:40:35,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-21 13:40:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-07-21 13:40:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-21 13:40:35,802 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:40:35,803 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:40:36,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:36,017 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:40:36,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:40:36,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1335597358, now seen corresponding path program 1 times [2020-07-21 13:40:36,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:40:36,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154976191] [2020-07-21 13:40:36,019 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:36,134 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:40:36,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:40:36,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 13:40:36,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:40:36,411 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:40:36,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:40:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:40:36,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154976191] [2020-07-21 13:40:36,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:40:36,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 22 [2020-07-21 13:40:36,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557293611] [2020-07-21 13:40:36,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-21 13:40:36,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:40:36,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-21 13:40:36,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2020-07-21 13:40:36,935 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 22 states. [2020-07-21 13:40:37,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:40:37,571 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-07-21 13:40:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 13:40:37,572 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2020-07-21 13:40:37,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:40:37,573 INFO L225 Difference]: With dead ends: 62 [2020-07-21 13:40:37,573 INFO L226 Difference]: Without dead ends: 55 [2020-07-21 13:40:37,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 54 SyntacticMatches, 15 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2020-07-21 13:40:37,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-21 13:40:37,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-07-21 13:40:37,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-21 13:40:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-07-21 13:40:37,583 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 45 [2020-07-21 13:40:37,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:40:37,584 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-07-21 13:40:37,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-21 13:40:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-07-21 13:40:37,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-21 13:40:37,585 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:40:37,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:40:37,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:37,794 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:40:37,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:40:37,794 INFO L82 PathProgramCache]: Analyzing trace with hash 526250732, now seen corresponding path program 1 times [2020-07-21 13:40:37,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:40:37,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517507362] [2020-07-21 13:40:37,796 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:37,905 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:40:37,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:40:37,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 13:40:37,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:40:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:40:38,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:40:38,432 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:40:38,435 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:40:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:40:38,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517507362] [2020-07-21 13:40:38,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:40:38,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2020-07-21 13:40:38,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12813032] [2020-07-21 13:40:38,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-21 13:40:38,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:40:38,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-21 13:40:38,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2020-07-21 13:40:38,502 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 24 states. [2020-07-21 13:40:39,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:40:39,329 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-07-21 13:40:39,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-21 13:40:39,330 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2020-07-21 13:40:39,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:40:39,331 INFO L225 Difference]: With dead ends: 66 [2020-07-21 13:40:39,331 INFO L226 Difference]: Without dead ends: 63 [2020-07-21 13:40:39,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190 [2020-07-21 13:40:39,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-21 13:40:39,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2020-07-21 13:40:39,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-21 13:40:39,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-07-21 13:40:39,353 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 45 [2020-07-21 13:40:39,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:40:39,353 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-07-21 13:40:39,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-21 13:40:39,353 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-07-21 13:40:39,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 13:40:39,357 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:40:39,358 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 13:40:39,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:39,575 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:40:39,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:40:39,575 INFO L82 PathProgramCache]: Analyzing trace with hash -2119488644, now seen corresponding path program 1 times [2020-07-21 13:40:39,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:40:39,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257146683] [2020-07-21 13:40:39,576 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:39,703 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:40:39,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:40:39,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 45 conjunts are in the unsatisfiable core [2020-07-21 13:40:39,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:40:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-21 13:40:39,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:40:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-21 13:40:40,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257146683] [2020-07-21 13:40:40,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:40:40,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 13 [2020-07-21 13:40:40,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249389716] [2020-07-21 13:40:40,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-21 13:40:40,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:40:40,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-21 13:40:40,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-07-21 13:40:40,022 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 13 states. [2020-07-21 13:40:40,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:40:40,437 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2020-07-21 13:40:40,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 13:40:40,437 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-07-21 13:40:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:40:40,439 INFO L225 Difference]: With dead ends: 70 [2020-07-21 13:40:40,440 INFO L226 Difference]: Without dead ends: 62 [2020-07-21 13:40:40,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-07-21 13:40:40,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-07-21 13:40:40,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-07-21 13:40:40,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-21 13:40:40,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-07-21 13:40:40,450 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 57 [2020-07-21 13:40:40,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:40:40,451 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-07-21 13:40:40,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-21 13:40:40,451 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-07-21 13:40:40,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 13:40:40,452 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:40:40,453 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 13:40:40,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:40,664 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:40:40,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:40:40,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1366132026, now seen corresponding path program 1 times [2020-07-21 13:40:40,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:40:40,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160988558] [2020-07-21 13:40:40,666 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:40,787 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:40:40,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:40:40,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 13:40:40,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:40:41,057 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 13:40:41,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:40:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 13:40:41,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160988558] [2020-07-21 13:40:41,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:40:41,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 23 [2020-07-21 13:40:41,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581157858] [2020-07-21 13:40:41,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-21 13:40:41,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:40:41,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-21 13:40:41,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2020-07-21 13:40:41,580 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 23 states. [2020-07-21 13:40:42,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:40:42,442 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-07-21 13:40:42,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 13:40:42,443 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 57 [2020-07-21 13:40:42,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:40:42,444 INFO L225 Difference]: With dead ends: 66 [2020-07-21 13:40:42,445 INFO L226 Difference]: Without dead ends: 57 [2020-07-21 13:40:42,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 77 SyntacticMatches, 17 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=185, Invalid=1297, Unknown=0, NotChecked=0, Total=1482 [2020-07-21 13:40:42,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-21 13:40:42,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-07-21 13:40:42,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-21 13:40:42,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-07-21 13:40:42,456 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 57 [2020-07-21 13:40:42,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:40:42,457 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-07-21 13:40:42,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-21 13:40:42,457 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-07-21 13:40:42,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 13:40:42,458 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:40:42,459 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 13:40:42,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:42,667 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:40:42,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:40:42,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1588672638, now seen corresponding path program 1 times [2020-07-21 13:40:42,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:40:42,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787294164] [2020-07-21 13:40:42,669 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:42,779 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:40:42,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:40:42,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-21 13:40:42,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:40:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-21 13:40:42,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:40:42,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787294164] [2020-07-21 13:40:42,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:40:42,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 13:40:42,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931826009] [2020-07-21 13:40:42,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 13:40:42,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:40:42,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 13:40:42,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 13:40:42,844 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 7 states. [2020-07-21 13:40:42,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:40:42,932 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-07-21 13:40:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:40:42,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-07-21 13:40:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:40:42,935 INFO L225 Difference]: With dead ends: 54 [2020-07-21 13:40:42,935 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 13:40:42,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:40:42,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 13:40:42,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 13:40:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 13:40:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 13:40:42,936 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-07-21 13:40:42,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:40:42,937 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 13:40:42,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 13:40:42,937 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 13:40:42,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 13:40:43,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:43,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 13:40:43,554 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 26 [2020-07-21 13:40:43,675 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-07-21 13:40:44,339 INFO L268 CegarLoopResult]: For program point my_mallocFINAL(lines 878 880) no Hoare annotation was computed. [2020-07-21 13:40:44,340 INFO L264 CegarLoopResult]: At program point L879(line 879) the Hoare annotation is: (let ((.cse0 (not (<= 8 |my_malloc_#in~size|)))) (and (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) .cse0 (not (= 0 ~elem~0.offset)) (not (= 0 ~elem~0.base))) (or .cse0 (<= 8 my_malloc_~size)))) [2020-07-21 13:40:44,340 INFO L268 CegarLoopResult]: For program point L879-1(line 879) no Hoare annotation was computed. [2020-07-21 13:40:44,340 INFO L264 CegarLoopResult]: At program point my_mallocENTRY(lines 878 880) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) (not (<= 8 |my_malloc_#in~size|)) (not (= 0 ~elem~0.offset)) (not (= 0 ~elem~0.base))) [2020-07-21 13:40:44,340 INFO L268 CegarLoopResult]: For program point my_mallocEXIT(lines 878 880) no Hoare annotation was computed. [2020-07-21 13:40:44,340 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:40:44,341 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) [2020-07-21 13:40:44,341 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:40:44,341 INFO L268 CegarLoopResult]: For program point L896(lines 896 897) no Hoare annotation was computed. [2020-07-21 13:40:44,341 INFO L268 CegarLoopResult]: For program point L896-2(lines 895 898) no Hoare annotation was computed. [2020-07-21 13:40:44,341 INFO L268 CegarLoopResult]: For program point list_delEXIT(lines 895 898) no Hoare annotation was computed. [2020-07-21 13:40:44,342 INFO L264 CegarLoopResult]: At program point list_delENTRY(lines 895 898) the Hoare annotation is: (and (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) [2020-07-21 13:40:44,342 INFO L264 CegarLoopResult]: At program point list_addENTRY(lines 889 893) the Hoare annotation is: (let ((.cse0 (and (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)))) (and (or .cse0 (not (= |old(~elem~0.offset)| 0)) (= 0 |list_add_#in~new.base|) (not (= 0 |old(~elem~0.base)|))) (or .cse0 (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|))) (or .cse0 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|))))) [2020-07-21 13:40:44,343 INFO L268 CegarLoopResult]: For program point L891(lines 891 892) no Hoare annotation was computed. [2020-07-21 13:40:44,343 INFO L268 CegarLoopResult]: For program point L890(line 890) no Hoare annotation was computed. [2020-07-21 13:40:44,343 INFO L268 CegarLoopResult]: For program point L891-2(lines 889 893) no Hoare annotation was computed. [2020-07-21 13:40:44,344 INFO L264 CegarLoopResult]: At program point L890-2(line 890) the Hoare annotation is: (and (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)) (or (not (= |old(~elem~0.offset)| 0)) (= 0 |list_add_#in~new.base|) (not (= 0 |old(~elem~0.base)|)))) [2020-07-21 13:40:44,344 INFO L268 CegarLoopResult]: For program point L890-3(line 890) no Hoare annotation was computed. [2020-07-21 13:40:44,344 INFO L268 CegarLoopResult]: For program point list_addEXIT(lines 889 893) no Hoare annotation was computed. [2020-07-21 13:40:44,344 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-21 13:40:44,345 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-21 13:40:44,345 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-21 13:40:44,345 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-21 13:40:44,345 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:40:44,345 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= 0 ~elem~0.base) (= 0 ~elem~0.offset) (<= 0 ~guard_malloc_counter~0.offset)) [2020-07-21 13:40:44,346 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 13:40:44,346 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:40:44,346 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 902 917) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~elem~0.base)|))) [2020-07-21 13:40:44,346 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 902 917) no Hoare annotation was computed. [2020-07-21 13:40:44,346 INFO L264 CegarLoopResult]: At program point L909(line 909) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= |old(~elem~0.offset)| 0)) (and .cse0 .cse1 .cse2 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset)) (not (= 0 |old(~elem~0.base)|)) (and .cse0 (<= 2 main_~dev2~0.offset) (<= ~elem~0.offset 0)) (and (= 0 ~elem~0.base) .cse0 .cse1 (= 0 ~elem~0.offset) .cse2 (or (not (= main_~dev2~0.base 0)) (not (= 0 main_~dev2~0.offset)))))) [2020-07-21 13:40:44,347 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 902 917) no Hoare annotation was computed. [2020-07-21 13:40:44,347 INFO L264 CegarLoopResult]: At program point L908(line 908) the Hoare annotation is: (let ((.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 (= main_~dev2~0.base ~elem~0.base) .cse1 .cse2 (or (not (= main_~dev2~0.base 0)) (not (= 0 main_~dev2~0.offset))) (= main_~dev2~0.offset ~elem~0.offset)) (not (= |old(~elem~0.offset)| 0)) (and .cse0 .cse1 .cse2 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset)) (not (= 0 |old(~elem~0.base)|)) (and .cse0 (<= 2 main_~dev2~0.offset) (<= ~elem~0.offset 0)))) [2020-07-21 13:40:44,347 INFO L264 CegarLoopResult]: At program point L907(line 907) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= 0 ~elem~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~elem~0.base)|))) [2020-07-21 13:40:44,347 INFO L268 CegarLoopResult]: For program point L906(lines 906 915) no Hoare annotation was computed. [2020-07-21 13:40:44,348 INFO L264 CegarLoopResult]: At program point L907-1(line 907) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 (= main_~dev2~0.base ~elem~0.base) .cse1 .cse2 (or (not (= main_~dev2~0.base 0)) (not (= 0 main_~dev2~0.offset))) (= main_~dev2~0.offset ~elem~0.offset)) (and .cse0 (<= 1 main_~dev1~0.offset) .cse1 (= 0 ~elem~0.offset) .cse2 (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~elem~0.base)|)))) [2020-07-21 13:40:44,348 INFO L264 CegarLoopResult]: At program point L905(line 905) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= 0 main_~dev1~0.base) (= 0 main_~dev1~0.offset)) (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~elem~0.base)|)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base))) [2020-07-21 13:40:44,348 INFO L268 CegarLoopResult]: For program point L906-1(lines 906 915) no Hoare annotation was computed. [2020-07-21 13:40:44,348 INFO L264 CegarLoopResult]: At program point L904(line 904) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~elem~0.base)|))) [2020-07-21 13:40:44,349 INFO L268 CegarLoopResult]: For program point L905-1(line 905) no Hoare annotation was computed. [2020-07-21 13:40:44,349 INFO L268 CegarLoopResult]: For program point L904-1(line 904) no Hoare annotation was computed. [2020-07-21 13:40:44,349 INFO L264 CegarLoopResult]: At program point __getMemoryENTRY(lines 869 876) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) (not (= 0 ~elem~0.offset)) (not (= 0 ~elem~0.base)) (not (<= 8 |__getMemory_#in~size|))) [2020-07-21 13:40:44,349 INFO L268 CegarLoopResult]: For program point __getMemoryEXIT(lines 869 876) no Hoare annotation was computed. [2020-07-21 13:40:44,349 INFO L268 CegarLoopResult]: For program point __getMemoryFINAL(lines 869 876) no Hoare annotation was computed. [2020-07-21 13:40:44,349 INFO L268 CegarLoopResult]: For program point L873(lines 873 874) no Hoare annotation was computed. [2020-07-21 13:40:44,350 INFO L268 CegarLoopResult]: For program point L871(line 871) no Hoare annotation was computed. [2020-07-21 13:40:44,350 INFO L264 CegarLoopResult]: At program point L871-2(line 871) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= 0 ~elem~0.offset)) (not (= 0 ~elem~0.base)) (not (<= 8 |__getMemory_#in~size|))) [2020-07-21 13:40:44,350 INFO L268 CegarLoopResult]: For program point L871-3(line 871) no Hoare annotation was computed. [2020-07-21 13:40:44,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:40:44 BoogieIcfgContainer [2020-07-21 13:40:44,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:40:44,364 INFO L168 Benchmark]: Toolchain (without parser) took 12670.64 ms. Allocated memory was 138.9 MB in the beginning and 351.8 MB in the end (delta: 212.9 MB). Free memory was 100.6 MB in the beginning and 91.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 221.8 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:44,364 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 138.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 13:40:44,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.40 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.2 MB in the beginning and 167.6 MB in the end (delta: -67.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:44,366 INFO L168 Benchmark]: Boogie Preprocessor took 55.63 ms. Allocated memory is still 201.9 MB. Free memory was 167.6 MB in the beginning and 164.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:44,370 INFO L168 Benchmark]: RCFGBuilder took 590.56 ms. Allocated memory is still 201.9 MB. Free memory was 164.5 MB in the beginning and 119.2 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:44,377 INFO L168 Benchmark]: TraceAbstraction took 11394.56 ms. Allocated memory was 201.9 MB in the beginning and 351.8 MB in the end (delta: 149.9 MB). Free memory was 118.5 MB in the beginning and 91.7 MB in the end (delta: 26.9 MB). Peak memory consumption was 176.8 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:44,385 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 138.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 624.40 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.2 MB in the beginning and 167.6 MB in the end (delta: -67.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.63 ms. Allocated memory is still 201.9 MB. Free memory was 167.6 MB in the beginning and 164.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 590.56 ms. Allocated memory is still 201.9 MB. Free memory was 164.5 MB in the beginning and 119.2 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11394.56 ms. Allocated memory was 201.9 MB in the beginning and 351.8 MB in the end (delta: 149.9 MB). Free memory was 118.5 MB in the beginning and 91.7 MB in the end (delta: 26.9 MB). Peak memory consumption was 176.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.1s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 341 SDtfs, 314 SDslu, 1376 SDs, 0 SdLazy, 2762 SolverSat, 283 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 685 GetRequests, 484 SyntacticMatches, 33 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 26 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 70 PreInvPairs, 81 NumberOfFragments, 519 HoareAnnotationTreeSize, 70 FomulaSimplifications, 579 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 18 FomulaSimplificationsInter, 996 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 388 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 616 ConstructedInterpolants, 0 QuantifiedInterpolants, 96217 SizeOfPredicates, 59 NumberOfNonLiveVariables, 1895 ConjunctsInSsa, 230 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 131/201 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 correct! Received shutdown request...