/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --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 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:19:33,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:19:33,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:19:33,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:19:33,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:19:33,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:19:33,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:19:33,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:19:33,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:19:33,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:19:33,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:19:33,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:19:33,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:19:33,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:19:33,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:19:33,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:19:33,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:19:33,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:19:33,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:19:33,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:19:33,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:19:33,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:19:33,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:19:33,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:19:33,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 23:19:33,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 23:19:33,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 23:19:33,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 23:19:33,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 23:19:33,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 23:19:33,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 23:19:33,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 23:19:33,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 23:19:33,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 23:19:33,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 23:19:33,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 23:19:33,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 23:19:33,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 23:19:33,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:19:33,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:19:33,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:19:33,473 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 [2020-07-19 23:19:33,507 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:19:33,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:19:33,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:19:33,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:19:33,511 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:19:33,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:19:33,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:19:33,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:19:33,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:19:33,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:19:33,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:19:33,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:19:33,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:19:33,514 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:19:33,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:19:33,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:19:33,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:19:33,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:19:33,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:19:33,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:19:33,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:19:33,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:19:33,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:19:33,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:19:33,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:19:33,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:19:33,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:19:33,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:19:33,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:19:33,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:19:33,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:19:33,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:19:33,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:19:33,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:19:33,812 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:19:33,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-07-19 23:19:33,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0247d5586/9de74ce1467743c8bd76a1898d387d10/FLAG535c56c7a [2020-07-19 23:19:34,398 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:19:34,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-07-19 23:19:34,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0247d5586/9de74ce1467743c8bd76a1898d387d10/FLAG535c56c7a [2020-07-19 23:19:34,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0247d5586/9de74ce1467743c8bd76a1898d387d10 [2020-07-19 23:19:34,785 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:19:34,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:19:34,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:19:34,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:19:34,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:19:34,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:19:34" (1/1) ... [2020-07-19 23:19:34,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c8e9f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:34, skipping insertion in model container [2020-07-19 23:19:34,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:19:34" (1/1) ... [2020-07-19 23:19:34,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:19:34,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:19:35,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:19:35,241 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:19:35,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:19:35,398 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:19:35,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:35 WrapperNode [2020-07-19 23:19:35,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:19:35,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:19:35,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:19:35,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:19:35,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:35" (1/1) ... [2020-07-19 23:19:35,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:35" (1/1) ... [2020-07-19 23:19:35,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:35" (1/1) ... [2020-07-19 23:19:35,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:35" (1/1) ... [2020-07-19 23:19:35,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:35" (1/1) ... [2020-07-19 23:19:35,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:35" (1/1) ... [2020-07-19 23:19:35,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:35" (1/1) ... [2020-07-19 23:19:35,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:19:35,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:19:35,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:19:35,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:19:35,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:35" (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 [2020-07-19 23:19:35,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:19:35,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:19:35,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-19 23:19:35,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-07-19 23:19:35,538 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-07-19 23:19:35,538 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-19 23:19:35,539 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-19 23:19:35,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:19:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:19:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-19 23:19:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-19 23:19:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-19 23:19:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-19 23:19:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-19 23:19:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-19 23:19:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-19 23:19:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-19 23:19:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-19 23:19:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-19 23:19:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-19 23:19:35,544 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-19 23:19:35,544 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-19 23:19:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-19 23:19:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-19 23:19:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-19 23:19:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-19 23:19:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-19 23:19:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-19 23:19:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-19 23:19:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-19 23:19:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-19 23:19:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-19 23:19:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-19 23:19:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-19 23:19:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-19 23:19:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-19 23:19:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-19 23:19:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-19 23:19:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-19 23:19:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-19 23:19:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-19 23:19:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-19 23:19:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-19 23:19:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-19 23:19:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-19 23:19:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-19 23:19:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-19 23:19:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-19 23:19:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-19 23:19:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-19 23:19:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-19 23:19:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-19 23:19:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-19 23:19:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-19 23:19:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-19 23:19:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-19 23:19:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-19 23:19:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-19 23:19:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-19 23:19:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-19 23:19:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-19 23:19:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-19 23:19:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-19 23:19:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-19 23:19:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-19 23:19:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-19 23:19:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-19 23:19:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-19 23:19:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-19 23:19:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-19 23:19:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-19 23:19:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-19 23:19:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-19 23:19:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-19 23:19:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-19 23:19:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-19 23:19:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-19 23:19:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-19 23:19:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-19 23:19:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-19 23:19:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-19 23:19:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-19 23:19:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-19 23:19:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-19 23:19:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-19 23:19:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-19 23:19:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-19 23:19:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-19 23:19:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-19 23:19:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-19 23:19:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-19 23:19:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-19 23:19:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-19 23:19:35,562 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-19 23:19:35,562 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-19 23:19:35,562 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-19 23:19:35,562 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-19 23:19:35,562 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-19 23:19:35,562 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-19 23:19:35,562 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-19 23:19:35,563 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-19 23:19:35,563 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-19 23:19:35,563 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-19 23:19:35,563 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-19 23:19:35,563 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-19 23:19:35,563 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-19 23:19:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-19 23:19:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-19 23:19:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-19 23:19:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-19 23:19:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-19 23:19:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 23:19:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-19 23:19:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-19 23:19:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-19 23:19:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-19 23:19:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-19 23:19:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-19 23:19:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-19 23:19:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-19 23:19:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-19 23:19:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-19 23:19:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-19 23:19:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-19 23:19:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-19 23:19:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-19 23:19:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-19 23:19:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-19 23:19:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-19 23:19:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:19:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-07-19 23:19:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-07-19 23:19:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-19 23:19:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-19 23:19:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:19:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:19:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 23:19:35,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-19 23:19:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:19:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 23:19:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 23:19:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 23:19:36,049 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:19:36,049 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-19 23:19:36,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:19:36 BoogieIcfgContainer [2020-07-19 23:19:36,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:19:36,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:19:36,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:19:36,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:19:36,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:19:34" (1/3) ... [2020-07-19 23:19:36,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c12cf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:19:36, skipping insertion in model container [2020-07-19 23:19:36,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:35" (2/3) ... [2020-07-19 23:19:36,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c12cf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:19:36, skipping insertion in model container [2020-07-19 23:19:36,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:19:36" (3/3) ... [2020-07-19 23:19:36,062 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-07-19 23:19:36,073 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:19:36,080 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:19:36,095 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:19:36,121 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:19:36,121 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:19:36,121 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:19:36,121 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:19:36,122 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:19:36,122 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:19:36,122 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:19:36,122 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:19:36,143 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-19 23:19:36,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-19 23:19:36,150 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:36,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:36,151 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:36,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:36,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1135050545, now seen corresponding path program 1 times [2020-07-19 23:19:36,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:36,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785117566] [2020-07-19 23:19:36,169 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1842e5f5 [2020-07-19 23:19:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:36,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:36,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785117566] [2020-07-19 23:19:36,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:19:36,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-19 23:19:36,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161835237] [2020-07-19 23:19:36,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 23:19:36,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:36,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 23:19:36,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-19 23:19:36,553 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 7 states. [2020-07-19 23:19:37,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:37,034 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2020-07-19 23:19:37,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 23:19:37,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-19 23:19:37,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:37,049 INFO L225 Difference]: With dead ends: 88 [2020-07-19 23:19:37,049 INFO L226 Difference]: Without dead ends: 43 [2020-07-19 23:19:37,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-07-19 23:19:37,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-19 23:19:37,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-07-19 23:19:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-19 23:19:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-07-19 23:19:37,107 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 13 [2020-07-19 23:19:37,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:37,108 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-07-19 23:19:37,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 23:19:37,108 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-07-19 23:19:37,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-19 23:19:37,110 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:37,111 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] [2020-07-19 23:19:37,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:19:37,111 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:37,112 INFO L82 PathProgramCache]: Analyzing trace with hash -925661111, now seen corresponding path program 1 times [2020-07-19 23:19:37,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:37,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893477438] [2020-07-19 23:19:37,113 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1842e5f5 [2020-07-19 23:19:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-19 23:19:37,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893477438] [2020-07-19 23:19:37,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452206687] [2020-07-19 23:19:37,433 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@737c343f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:37,598 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@737c343f issued 2 check-sat command(s) [2020-07-19 23:19:37,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:37,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 33 conjunts are in the unsatisfiable core [2020-07-19 23:19:37,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:37,754 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-19 23:19:37,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:19:37,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 13 [2020-07-19 23:19:37,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689522167] [2020-07-19 23:19:37,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-19 23:19:37,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:37,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-19 23:19:37,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-07-19 23:19:37,759 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 13 states. [2020-07-19 23:19:37,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:37,983 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2020-07-19 23:19:37,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 23:19:37,984 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-07-19 23:19:37,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:37,986 INFO L225 Difference]: With dead ends: 70 [2020-07-19 23:19:37,986 INFO L226 Difference]: Without dead ends: 48 [2020-07-19 23:19:37,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-07-19 23:19:37,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-19 23:19:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-07-19 23:19:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-19 23:19:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-07-19 23:19:37,999 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 38 [2020-07-19 23:19:37,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:37,999 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-07-19 23:19:37,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-19 23:19:38,000 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-07-19 23:19:38,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-19 23:19:38,004 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:38,004 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] [2020-07-19 23:19:38,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-19 23:19:38,218 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:38,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:38,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1188044311, now seen corresponding path program 1 times [2020-07-19 23:19:38,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:38,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564436942] [2020-07-19 23:19:38,221 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1842e5f5 [2020-07-19 23:19:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-19 23:19:38,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564436942] [2020-07-19 23:19:38,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122097976] [2020-07-19 23:19:38,566 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@761c9251 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:38,676 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@761c9251 issued 3 check-sat command(s) [2020-07-19 23:19:38,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:38,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 33 conjunts are in the unsatisfiable core [2020-07-19 23:19:38,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-19 23:19:38,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-19 23:19:38,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 19 [2020-07-19 23:19:38,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465328116] [2020-07-19 23:19:38,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:19:38,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:38,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:19:38,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-07-19 23:19:38,818 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 6 states. [2020-07-19 23:19:38,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:38,995 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-07-19 23:19:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 23:19:38,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-19 23:19:38,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:38,998 INFO L225 Difference]: With dead ends: 70 [2020-07-19 23:19:38,998 INFO L226 Difference]: Without dead ends: 61 [2020-07-19 23:19:38,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2020-07-19 23:19:39,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-19 23:19:39,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2020-07-19 23:19:39,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-19 23:19:39,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2020-07-19 23:19:39,013 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 38 [2020-07-19 23:19:39,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:39,014 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2020-07-19 23:19:39,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:19:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2020-07-19 23:19:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-19 23:19:39,016 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:39,016 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] [2020-07-19 23:19:39,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:39,230 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:39,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:39,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1335597358, now seen corresponding path program 1 times [2020-07-19 23:19:39,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:39,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736372396] [2020-07-19 23:19:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1842e5f5 [2020-07-19 23:19:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 23:19:39,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736372396] [2020-07-19 23:19:39,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804918152] [2020-07-19 23:19:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60cb881 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:39,783 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60cb881 issued 4 check-sat command(s) [2020-07-19 23:19:39,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:39,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-19 23:19:39,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:40,018 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:40,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:19:40,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 29 [2020-07-19 23:19:40,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066581564] [2020-07-19 23:19:40,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-19 23:19:40,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:40,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-19 23:19:40,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2020-07-19 23:19:40,021 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 29 states. [2020-07-19 23:19:41,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:41,419 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2020-07-19 23:19:41,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-19 23:19:41,425 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 45 [2020-07-19 23:19:41,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:41,426 INFO L225 Difference]: With dead ends: 79 [2020-07-19 23:19:41,427 INFO L226 Difference]: Without dead ends: 76 [2020-07-19 23:19:41,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=220, Invalid=1760, Unknown=0, NotChecked=0, Total=1980 [2020-07-19 23:19:41,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-19 23:19:41,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-07-19 23:19:41,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-19 23:19:41,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2020-07-19 23:19:41,443 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 45 [2020-07-19 23:19:41,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:41,443 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2020-07-19 23:19:41,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-19 23:19:41,444 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2020-07-19 23:19:41,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-19 23:19:41,445 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:41,445 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:41,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:41,649 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:41,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:41,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1744421583, now seen corresponding path program 1 times [2020-07-19 23:19:41,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:41,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35432534] [2020-07-19 23:19:41,651 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1842e5f5 [2020-07-19 23:19:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 23:19:42,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35432534] [2020-07-19 23:19:42,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986161259] [2020-07-19 23:19:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7be40f7f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:42,278 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7be40f7f issued 2 check-sat command(s) [2020-07-19 23:19:42,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:42,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 53 conjunts are in the unsatisfiable core [2020-07-19 23:19:42,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:42,706 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-19 23:19:42,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:19:42,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13] total 34 [2020-07-19 23:19:42,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992472344] [2020-07-19 23:19:42,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-07-19 23:19:42,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:42,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-07-19 23:19:42,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1044, Unknown=0, NotChecked=0, Total=1122 [2020-07-19 23:19:42,710 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand 34 states. [2020-07-19 23:19:44,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:44,116 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2020-07-19 23:19:44,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-19 23:19:44,117 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 45 [2020-07-19 23:19:44,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:44,118 INFO L225 Difference]: With dead ends: 101 [2020-07-19 23:19:44,118 INFO L226 Difference]: Without dead ends: 57 [2020-07-19 23:19:44,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=220, Invalid=2330, Unknown=0, NotChecked=0, Total=2550 [2020-07-19 23:19:44,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-19 23:19:44,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-07-19 23:19:44,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-19 23:19:44,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-07-19 23:19:44,146 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 45 [2020-07-19 23:19:44,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:44,146 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-07-19 23:19:44,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-07-19 23:19:44,146 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-07-19 23:19:44,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-19 23:19:44,151 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:44,151 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] [2020-07-19 23:19:44,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:44,367 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:44,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:44,368 INFO L82 PathProgramCache]: Analyzing trace with hash 526250732, now seen corresponding path program 1 times [2020-07-19 23:19:44,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:44,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225043732] [2020-07-19 23:19:44,370 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1842e5f5 [2020-07-19 23:19:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 23:19:44,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225043732] [2020-07-19 23:19:44,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891628146] [2020-07-19 23:19:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@57bc6814 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:44,765 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@57bc6814 issued 3 check-sat command(s) [2020-07-19 23:19:44,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:44,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-19 23:19:44,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:45,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:19:45,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2020-07-19 23:19:45,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751068999] [2020-07-19 23:19:45,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-19 23:19:45,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:45,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-19 23:19:45,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2020-07-19 23:19:45,127 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 28 states. [2020-07-19 23:19:46,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:46,065 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-07-19 23:19:46,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-19 23:19:46,066 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2020-07-19 23:19:46,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:46,067 INFO L225 Difference]: With dead ends: 67 [2020-07-19 23:19:46,067 INFO L226 Difference]: Without dead ends: 62 [2020-07-19 23:19:46,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=1238, Unknown=0, NotChecked=0, Total=1482 [2020-07-19 23:19:46,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-07-19 23:19:46,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-07-19 23:19:46,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-19 23:19:46,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-07-19 23:19:46,080 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 45 [2020-07-19 23:19:46,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:46,081 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-07-19 23:19:46,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-19 23:19:46,081 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-07-19 23:19:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-19 23:19:46,082 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:46,083 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] [2020-07-19 23:19:46,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-19 23:19:46,296 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:46,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:46,296 INFO L82 PathProgramCache]: Analyzing trace with hash -2119488644, now seen corresponding path program 1 times [2020-07-19 23:19:46,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:46,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098294571] [2020-07-19 23:19:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1842e5f5 [2020-07-19 23:19:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-19 23:19:46,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098294571] [2020-07-19 23:19:46,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520409036] [2020-07-19 23:19:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6f42c810 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:46,775 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6f42c810 issued 2 check-sat command(s) [2020-07-19 23:19:46,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:46,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 45 conjunts are in the unsatisfiable core [2020-07-19 23:19:46,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-19 23:19:47,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:19:47,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11] total 30 [2020-07-19 23:19:47,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86181936] [2020-07-19 23:19:47,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-19 23:19:47,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:47,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-19 23:19:47,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=803, Unknown=0, NotChecked=0, Total=870 [2020-07-19 23:19:47,085 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 30 states. [2020-07-19 23:19:48,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:48,625 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2020-07-19 23:19:48,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-19 23:19:48,626 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 57 [2020-07-19 23:19:48,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:48,628 INFO L225 Difference]: With dead ends: 70 [2020-07-19 23:19:48,628 INFO L226 Difference]: Without dead ends: 62 [2020-07-19 23:19:48,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2020-07-19 23:19:48,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-07-19 23:19:48,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-07-19 23:19:48,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-19 23:19:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2020-07-19 23:19:48,649 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 57 [2020-07-19 23:19:48,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:48,652 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2020-07-19 23:19:48,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-19 23:19:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2020-07-19 23:19:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-19 23:19:48,656 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:48,657 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] [2020-07-19 23:19:48,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:48,858 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:48,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:48,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1366132026, now seen corresponding path program 1 times [2020-07-19 23:19:48,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:48,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820684943] [2020-07-19 23:19:48,860 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1842e5f5 [2020-07-19 23:19:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-19 23:19:49,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820684943] [2020-07-19 23:19:49,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446128045] [2020-07-19 23:19:49,290 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7be59c4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:49,420 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7be59c4 issued 2 check-sat command(s) [2020-07-19 23:19:49,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:49,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 53 conjunts are in the unsatisfiable core [2020-07-19 23:19:49,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-19 23:19:49,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:19:49,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11] total 31 [2020-07-19 23:19:49,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193348896] [2020-07-19 23:19:49,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-19 23:19:49,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:49,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-19 23:19:49,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2020-07-19 23:19:49,742 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 31 states. [2020-07-19 23:19:51,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:51,470 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-07-19 23:19:51,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-19 23:19:51,471 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 57 [2020-07-19 23:19:51,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:51,472 INFO L225 Difference]: With dead ends: 67 [2020-07-19 23:19:51,472 INFO L226 Difference]: Without dead ends: 47 [2020-07-19 23:19:51,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=256, Invalid=2294, Unknown=0, NotChecked=0, Total=2550 [2020-07-19 23:19:51,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-19 23:19:51,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-07-19 23:19:51,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-19 23:19:51,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-07-19 23:19:51,500 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 57 [2020-07-19 23:19:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:51,501 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-07-19 23:19:51,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-19 23:19:51,502 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-07-19 23:19:51,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-19 23:19:51,506 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:51,506 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] [2020-07-19 23:19:51,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:51,721 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:51,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:51,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1588672638, now seen corresponding path program 1 times [2020-07-19 23:19:51,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:51,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514897630] [2020-07-19 23:19:51,722 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1842e5f5 [2020-07-19 23:19:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-19 23:19:52,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514897630] [2020-07-19 23:19:52,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190392692] [2020-07-19 23:19:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@23ab7d40 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:52,116 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@23ab7d40 issued 2 check-sat command(s) [2020-07-19 23:19:52,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:52,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-19 23:19:52,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 23:19:52,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-19 23:19:52,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2020-07-19 23:19:52,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531274441] [2020-07-19 23:19:52,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 23:19:52,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:52,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 23:19:52,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2020-07-19 23:19:52,265 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 7 states. [2020-07-19 23:19:52,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:52,356 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-07-19 23:19:52,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 23:19:52,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-07-19 23:19:52,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:52,357 INFO L225 Difference]: With dead ends: 47 [2020-07-19 23:19:52,357 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 23:19:52,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2020-07-19 23:19:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 23:19:52,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 23:19:52,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 23:19:52,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 23:19:52,362 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-07-19 23:19:52,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:52,362 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 23:19:52,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 23:19:52,363 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 23:19:52,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 23:19:52,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-07-19 23:19:52,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 23:19:52,864 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 34 [2020-07-19 23:19:52,969 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 30 [2020-07-19 23:19:53,574 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-07-19 23:19:53,628 INFO L268 CegarLoopResult]: For program point my_mallocFINAL(lines 878 880) no Hoare annotation was computed. [2020-07-19 23:19:53,628 INFO L264 CegarLoopResult]: At program point L879(line 879) the Hoare annotation is: (or (not (= 8 |my_malloc_#in~size|)) (and (= 8 my_malloc_~size) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|))) [2020-07-19 23:19:53,628 INFO L268 CegarLoopResult]: For program point L879-1(line 879) no Hoare annotation was computed. [2020-07-19 23:19:53,628 INFO L264 CegarLoopResult]: At program point my_mallocENTRY(lines 878 880) the Hoare annotation is: (or (not (= 8 |my_malloc_#in~size|)) (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|))) [2020-07-19 23:19:53,628 INFO L268 CegarLoopResult]: For program point my_mallocEXIT(lines 878 880) no Hoare annotation was computed. [2020-07-19 23:19:53,629 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:19:53,629 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= ~elem~0.base |old(~elem~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#head~0.base| |old(~#head~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~elem~0.offset |old(~elem~0.offset)|) (= |old(#length)| |#length|) (= |~#head~0.offset| |old(~#head~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) [2020-07-19 23:19:53,629 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:19:53,629 INFO L268 CegarLoopResult]: For program point L896(lines 896 897) no Hoare annotation was computed. [2020-07-19 23:19:53,629 INFO L268 CegarLoopResult]: For program point L896-2(lines 895 898) no Hoare annotation was computed. [2020-07-19 23:19:53,629 INFO L268 CegarLoopResult]: For program point list_delEXIT(lines 895 898) no Hoare annotation was computed. [2020-07-19 23:19:53,629 INFO L264 CegarLoopResult]: At program point list_delENTRY(lines 895 898) 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)) (not (= 0 |old(~elem~0.base)|))) (or (not (<= 0 ~guard_malloc_counter~0.offset)) .cse0))) [2020-07-19 23:19:53,630 INFO L264 CegarLoopResult]: At program point list_addENTRY(lines 889 893) the Hoare annotation is: (let ((.cse1 (not (<= 0 ~guard_malloc_counter~0.offset))) (.cse0 (and (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)))) (and (or .cse0 .cse1 (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|))) (or .cse0 (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~elem~0.base)|)) (and (= 0 |list_add_#in~new.offset|) (= 0 |list_add_#in~new.base|))) (or .cse1 .cse0 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|))))) [2020-07-19 23:19:53,630 INFO L268 CegarLoopResult]: For program point L891(lines 891 892) no Hoare annotation was computed. [2020-07-19 23:19:53,630 INFO L268 CegarLoopResult]: For program point L890(line 890) no Hoare annotation was computed. [2020-07-19 23:19:53,630 INFO L268 CegarLoopResult]: For program point L891-2(lines 889 893) no Hoare annotation was computed. [2020-07-19 23:19:53,630 INFO L264 CegarLoopResult]: At program point L890-2(line 890) the Hoare annotation is: (let ((.cse0 (not (<= 0 ~guard_malloc_counter~0.offset)))) (and (or (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~elem~0.base)|)) (and (= 0 |list_add_#in~new.offset|) (= 0 |list_add_#in~new.base|))) (or .cse0 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|))) (or .cse0 (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|))))) [2020-07-19 23:19:53,630 INFO L268 CegarLoopResult]: For program point L890-3(line 890) no Hoare annotation was computed. [2020-07-19 23:19:53,630 INFO L268 CegarLoopResult]: For program point list_addEXIT(lines 889 893) no Hoare annotation was computed. [2020-07-19 23:19:53,631 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-19 23:19:53,631 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-19 23:19:53,631 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-19 23:19:53,631 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-19 23:19:53,631 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:19:53,631 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)) [2020-07-19 23:19:53,631 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 23:19:53,631 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:19:53,632 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(~elem~0.offset)| ~elem~0.offset) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |old(~elem~0.base)| ~elem~0.base) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~elem~0.base)|))) [2020-07-19 23:19:53,632 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 902 917) no Hoare annotation was computed. [2020-07-19 23:19:53,632 INFO L264 CegarLoopResult]: At program point L909(line 909) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= 0 ~elem~0.base) (= 0 ~elem~0.offset) (or (not (= main_~dev2~0.base 0)) (not (= 0 main_~dev2~0.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) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset) (<= (+ ~elem~0.offset 1) main_~dev2~0.offset))) [2020-07-19 23:19:53,632 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 902 917) no Hoare annotation was computed. [2020-07-19 23:19:53,632 INFO L264 CegarLoopResult]: At program point L908(line 908) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse1 (<= 1 main_~dev1~0.offset)) (.cse2 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse3 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= 0 ~elem~0.base) (= 0 ~elem~0.offset) (or (not (= main_~dev2~0.base 0)) (not (= 0 main_~dev2~0.offset)))) (not (= |old(~elem~0.offset)| 0)) (and .cse0 .cse1 (= main_~dev2~0.base ~elem~0.base) .cse2 .cse3 (= main_~dev2~0.offset ~elem~0.offset)) (not (= 0 |old(~elem~0.base)|)) (and .cse0 .cse1 .cse2 .cse3 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset)))) [2020-07-19 23:19:53,633 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) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.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)|))) [2020-07-19 23:19:53,633 INFO L268 CegarLoopResult]: For program point L906(lines 906 915) no Hoare annotation was computed. [2020-07-19 23:19:53,633 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 (<= 1 main_~dev1~0.offset)) (.cse2 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse3 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 .cse1 .cse2 .cse3 (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~elem~0.offset)| 0)) (and .cse0 .cse1 (= main_~dev2~0.base ~elem~0.base) .cse2 .cse3 (= main_~dev2~0.offset ~elem~0.offset)) (not (= 0 |old(~elem~0.base)|)))) [2020-07-19 23:19:53,633 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))) [2020-07-19 23:19:53,633 INFO L268 CegarLoopResult]: For program point L906-1(lines 906 915) no Hoare annotation was computed. [2020-07-19 23:19:53,633 INFO L264 CegarLoopResult]: At program point L904(line 904) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= |old(~elem~0.offset)| ~elem~0.offset) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |old(~elem~0.base)| ~elem~0.base) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~elem~0.base)|))) [2020-07-19 23:19:53,634 INFO L268 CegarLoopResult]: For program point L905-1(line 905) no Hoare annotation was computed. [2020-07-19 23:19:53,634 INFO L268 CegarLoopResult]: For program point L904-1(line 904) no Hoare annotation was computed. [2020-07-19 23:19:53,634 INFO L264 CegarLoopResult]: At program point __getMemoryENTRY(lines 869 876) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) (not (= 8 |__getMemory_#in~size|)) (not (= 0 ~elem~0.offset)) (not (= 0 ~elem~0.base))) [2020-07-19 23:19:53,634 INFO L268 CegarLoopResult]: For program point __getMemoryEXIT(lines 869 876) no Hoare annotation was computed. [2020-07-19 23:19:53,634 INFO L268 CegarLoopResult]: For program point __getMemoryFINAL(lines 869 876) no Hoare annotation was computed. [2020-07-19 23:19:53,634 INFO L268 CegarLoopResult]: For program point L873(lines 873 874) no Hoare annotation was computed. [2020-07-19 23:19:53,634 INFO L268 CegarLoopResult]: For program point L871(line 871) no Hoare annotation was computed. [2020-07-19 23:19:53,635 INFO L264 CegarLoopResult]: At program point L871-2(line 871) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= 8 |__getMemory_#in~size|)) (not (= ~elem~0.offset 0)) (not (= 0 ~elem~0.base))) [2020-07-19 23:19:53,635 INFO L268 CegarLoopResult]: For program point L871-3(line 871) no Hoare annotation was computed. [2020-07-19 23:19:53,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:19:53 BoogieIcfgContainer [2020-07-19 23:19:53,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:19:53,643 INFO L168 Benchmark]: Toolchain (without parser) took 18856.56 ms. Allocated memory was 139.5 MB in the beginning and 415.2 MB in the end (delta: 275.8 MB). Free memory was 102.8 MB in the beginning and 337.7 MB in the end (delta: -235.0 MB). Peak memory consumption was 289.2 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:53,644 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 23:19:53,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.73 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.3 MB in the beginning and 168.8 MB in the end (delta: -66.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:53,645 INFO L168 Benchmark]: Boogie Preprocessor took 57.57 ms. Allocated memory is still 203.9 MB. Free memory was 168.8 MB in the beginning and 166.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:53,646 INFO L168 Benchmark]: RCFGBuilder took 596.67 ms. Allocated memory is still 203.9 MB. Free memory was 166.2 MB in the beginning and 120.8 MB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:53,647 INFO L168 Benchmark]: TraceAbstraction took 17586.20 ms. Allocated memory was 203.9 MB in the beginning and 415.2 MB in the end (delta: 211.3 MB). Free memory was 120.2 MB in the beginning and 337.7 MB in the end (delta: -217.5 MB). Peak memory consumption was 242.2 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:53,650 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 609.73 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.3 MB in the beginning and 168.8 MB in the end (delta: -66.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.57 ms. Allocated memory is still 203.9 MB. Free memory was 168.8 MB in the beginning and 166.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 596.67 ms. Allocated memory is still 203.9 MB. Free memory was 166.2 MB in the beginning and 120.8 MB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17586.20 ms. Allocated memory was 203.9 MB in the beginning and 415.2 MB in the end (delta: 211.3 MB). Free memory was 120.2 MB in the beginning and 337.7 MB in the end (delta: -217.5 MB). Peak memory consumption was 242.2 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: 16.4s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 329 SDtfs, 474 SDslu, 1057 SDs, 0 SdLazy, 5360 SolverSat, 486 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 704 GetRequests, 409 SyntacticMatches, 6 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=4, 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, 28 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 77 PreInvPairs, 90 NumberOfFragments, 549 HoareAnnotationTreeSize, 77 FomulaSimplifications, 1878 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 18 FomulaSimplificationsInter, 1035 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 777 NumberOfCodeBlocks, 640 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 760 ConstructedInterpolants, 0 QuantifiedInterpolants, 148501 SizeOfPredicates, 70 NumberOfNonLiveVariables, 1697 ConjunctsInSsa, 288 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 151/248 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...