/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:44:37,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:44:37,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:44:37,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:44:37,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:44:37,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:44:37,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:44:37,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:44:37,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:44:37,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:44:37,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:44:37,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:44:37,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:44:37,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:44:37,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:44:37,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:44:37,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:44:37,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:44:37,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:44:37,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:44:37,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:44:37,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:44:37,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:44:37,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:44:37,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:44:37,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:44:37,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:44:37,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:44:37,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:44:37,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:44:37,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:44:37,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:44:37,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:44:37,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:44:37,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:44:37,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:44:37,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:44:37,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:44:37,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:44:37,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:44:37,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:44:37,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:44:37,540 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:44:37,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:44:37,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:44:37,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:44:37,542 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:44:37,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:44:37,542 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:44:37,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:44:37,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:44:37,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:44:37,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:44:37,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:44:37,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:44:37,544 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:44:37,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:44:37,544 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:44:37,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:44:37,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:44:37,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:44:37,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:44:37,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:44:37,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:44:37,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:44:37,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:44:37,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:44:37,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:44:37,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:44:37,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:44:37,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:44:37,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:44:37,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:44:37,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:44:37,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:44:37,876 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:44:37,877 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:44:37,877 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-08-21 15:44:37,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d833f9ef7/06fae2a95727432d81319c1d88600ede/FLAGb38f80434 [2020-08-21 15:44:38,498 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:44:38,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-08-21 15:44:38,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d833f9ef7/06fae2a95727432d81319c1d88600ede/FLAGb38f80434 [2020-08-21 15:44:38,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d833f9ef7/06fae2a95727432d81319c1d88600ede [2020-08-21 15:44:38,794 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:44:38,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:44:38,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:44:38,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:44:38,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:44:38,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:44:38" (1/1) ... [2020-08-21 15:44:38,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6fb2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:38, skipping insertion in model container [2020-08-21 15:44:38,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:44:38" (1/1) ... [2020-08-21 15:44:38,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:44:38,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:44:39,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:44:39,275 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:44:39,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:44:39,499 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:44:39,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:39 WrapperNode [2020-08-21 15:44:39,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:44:39,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:44:39,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:44:39,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:44:39,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:39" (1/1) ... [2020-08-21 15:44:39,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:39" (1/1) ... [2020-08-21 15:44:39,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:39" (1/1) ... [2020-08-21 15:44:39,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:39" (1/1) ... [2020-08-21 15:44:39,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:39" (1/1) ... [2020-08-21 15:44:39,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:39" (1/1) ... [2020-08-21 15:44:39,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:39" (1/1) ... [2020-08-21 15:44:39,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:44:39,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:44:39,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:44:39,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:44:39,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-21 15:44:39,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:44:39,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:44:39,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-21 15:44:39,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-08-21 15:44:39,642 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-08-21 15:44:39,643 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-21 15:44:39,643 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-08-21 15:44:39,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:44:39,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:44:39,643 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-21 15:44:39,644 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-08-21 15:44:39,644 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-08-21 15:44:39,644 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-08-21 15:44:39,644 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-08-21 15:44:39,644 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-08-21 15:44:39,644 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-08-21 15:44:39,644 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-08-21 15:44:39,645 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-08-21 15:44:39,645 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-08-21 15:44:39,645 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-08-21 15:44:39,645 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-08-21 15:44:39,645 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-08-21 15:44:39,645 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-08-21 15:44:39,645 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-08-21 15:44:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-08-21 15:44:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-08-21 15:44:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-08-21 15:44:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-08-21 15:44:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-08-21 15:44:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-08-21 15:44:39,647 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-08-21 15:44:39,647 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-08-21 15:44:39,647 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-08-21 15:44:39,647 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-08-21 15:44:39,647 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-08-21 15:44:39,647 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-08-21 15:44:39,647 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-08-21 15:44:39,648 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-08-21 15:44:39,648 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-08-21 15:44:39,648 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-08-21 15:44:39,648 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-08-21 15:44:39,648 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-08-21 15:44:39,648 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-08-21 15:44:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-08-21 15:44:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-08-21 15:44:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-08-21 15:44:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-08-21 15:44:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-08-21 15:44:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:44:39,650 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-08-21 15:44:39,650 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-08-21 15:44:39,650 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-08-21 15:44:39,650 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-08-21 15:44:39,650 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-08-21 15:44:39,650 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-08-21 15:44:39,651 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-08-21 15:44:39,651 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-08-21 15:44:39,651 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-08-21 15:44:39,651 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-08-21 15:44:39,651 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-08-21 15:44:39,651 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-08-21 15:44:39,652 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-08-21 15:44:39,652 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-08-21 15:44:39,652 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-08-21 15:44:39,652 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-08-21 15:44:39,652 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-08-21 15:44:39,652 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-08-21 15:44:39,652 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-08-21 15:44:39,653 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-08-21 15:44:39,653 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-08-21 15:44:39,653 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-08-21 15:44:39,653 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-08-21 15:44:39,653 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-08-21 15:44:39,653 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-08-21 15:44:39,653 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-08-21 15:44:39,654 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-08-21 15:44:39,654 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-08-21 15:44:39,654 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-08-21 15:44:39,654 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-08-21 15:44:39,654 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-08-21 15:44:39,654 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-08-21 15:44:39,655 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-08-21 15:44:39,655 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-08-21 15:44:39,655 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-08-21 15:44:39,655 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-08-21 15:44:39,655 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-08-21 15:44:39,655 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-08-21 15:44:39,655 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-08-21 15:44:39,656 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-08-21 15:44:39,656 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-08-21 15:44:39,656 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-08-21 15:44:39,656 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-08-21 15:44:39,656 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-08-21 15:44:39,656 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-08-21 15:44:39,657 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-08-21 15:44:39,657 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-08-21 15:44:39,657 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-08-21 15:44:39,657 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-08-21 15:44:39,657 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-08-21 15:44:39,657 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-08-21 15:44:39,657 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-08-21 15:44:39,658 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-08-21 15:44:39,658 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-08-21 15:44:39,658 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-08-21 15:44:39,658 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-08-21 15:44:39,658 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-08-21 15:44:39,658 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-08-21 15:44:39,658 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-08-21 15:44:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-08-21 15:44:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-08-21 15:44:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-08-21 15:44:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:44:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 15:44:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 15:44:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:44:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 15:44:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-08-21 15:44:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 15:44:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-08-21 15:44:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-08-21 15:44:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-08-21 15:44:39,661 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-08-21 15:44:39,661 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-08-21 15:44:39,661 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-08-21 15:44:39,661 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-08-21 15:44:39,661 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-08-21 15:44:39,661 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-08-21 15:44:39,661 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-08-21 15:44:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-08-21 15:44:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:44:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-08-21 15:44:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-08-21 15:44:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-21 15:44:39,662 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-08-21 15:44:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:44:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:44:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:44:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 15:44:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:44:39,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:44:39,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:44:39,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:44:40,171 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:44:40,171 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 15:44:40,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:44:40 BoogieIcfgContainer [2020-08-21 15:44:40,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:44:40,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:44:40,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:44:40,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:44:40,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:44:38" (1/3) ... [2020-08-21 15:44:40,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572438c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:44:40, skipping insertion in model container [2020-08-21 15:44:40,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:39" (2/3) ... [2020-08-21 15:44:40,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572438c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:44:40, skipping insertion in model container [2020-08-21 15:44:40,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:44:40" (3/3) ... [2020-08-21 15:44:40,184 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-08-21 15:44:40,192 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:44:40,199 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:44:40,211 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:44:40,235 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:44:40,236 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:44:40,236 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:44:40,236 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:44:40,236 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:44:40,237 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:44:40,237 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:44:40,237 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:44:40,255 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-21 15:44:40,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 15:44:40,262 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:40,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:40,263 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:40,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:40,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1135050545, now seen corresponding path program 1 times [2020-08-21 15:44:40,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:40,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821607227] [2020-08-21 15:44:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:40,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:40,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821607227] [2020-08-21 15:44:40,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:40,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:44:40,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105202356] [2020-08-21 15:44:40,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:44:40,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:40,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:44:40,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:44:40,664 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 7 states. [2020-08-21 15:44:41,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:41,101 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2020-08-21 15:44:41,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:44:41,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-08-21 15:44:41,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:41,115 INFO L225 Difference]: With dead ends: 88 [2020-08-21 15:44:41,115 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 15:44:41,120 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 [2020-08-21 15:44:41,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 15:44:41,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-08-21 15:44:41,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-21 15:44:41,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-08-21 15:44:41,174 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 13 [2020-08-21 15:44:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:41,175 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-08-21 15:44:41,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:44:41,175 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-08-21 15:44:41,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 15:44:41,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:41,178 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] [2020-08-21 15:44:41,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:44:41,179 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:41,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:41,179 INFO L82 PathProgramCache]: Analyzing trace with hash -925661111, now seen corresponding path program 1 times [2020-08-21 15:44:41,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:41,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761224419] [2020-08-21 15:44:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:44:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 15:44:41,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761224419] [2020-08-21 15:44:41,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:41,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:44:41,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023952048] [2020-08-21 15:44:41,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:44:41,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:41,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:44:41,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:44:41,470 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2020-08-21 15:44:41,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:41,683 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-08-21 15:44:41,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:44:41,684 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-08-21 15:44:41,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:41,686 INFO L225 Difference]: With dead ends: 67 [2020-08-21 15:44:41,686 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 15:44:41,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:44:41,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 15:44:41,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-21 15:44:41,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-21 15:44:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-08-21 15:44:41,701 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 38 [2020-08-21 15:44:41,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:41,702 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-08-21 15:44:41,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:44:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-08-21 15:44:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 15:44:41,703 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:41,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:41,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:44:41,704 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:41,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:41,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1219064118, now seen corresponding path program 1 times [2020-08-21 15:44:41,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:41,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949205853] [2020-08-21 15:44:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:44:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 15:44:41,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949205853] [2020-08-21 15:44:41,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:41,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 15:44:41,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110200350] [2020-08-21 15:44:41,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:44:41,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:41,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:44:41,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:44:41,986 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 9 states. [2020-08-21 15:44:42,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:42,195 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-08-21 15:44:42,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:44:42,196 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-08-21 15:44:42,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:42,197 INFO L225 Difference]: With dead ends: 69 [2020-08-21 15:44:42,197 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 15:44:42,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:44:42,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 15:44:42,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-08-21 15:44:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-21 15:44:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-08-21 15:44:42,207 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 38 [2020-08-21 15:44:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:42,207 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-08-21 15:44:42,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:44:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-08-21 15:44:42,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 15:44:42,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:42,209 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] [2020-08-21 15:44:42,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:44:42,210 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:42,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:42,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1188044311, now seen corresponding path program 1 times [2020-08-21 15:44:42,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:42,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562739516] [2020-08-21 15:44:42,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:42,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:42,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:44:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:42,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:42,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:42,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 15:44:42,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562739516] [2020-08-21 15:44:42,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:42,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 15:44:42,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024276097] [2020-08-21 15:44:42,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 15:44:42,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:42,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 15:44:42,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:44:42,544 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 15 states. [2020-08-21 15:44:43,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:43,273 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2020-08-21 15:44:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 15:44:43,273 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-08-21 15:44:43,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:43,275 INFO L225 Difference]: With dead ends: 75 [2020-08-21 15:44:43,275 INFO L226 Difference]: Without dead ends: 62 [2020-08-21 15:44:43,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-08-21 15:44:43,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-08-21 15:44:43,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2020-08-21 15:44:43,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-21 15:44:43,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-08-21 15:44:43,287 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 38 [2020-08-21 15:44:43,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:43,288 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-08-21 15:44:43,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 15:44:43,288 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-08-21 15:44:43,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-21 15:44:43,289 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:43,289 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] [2020-08-21 15:44:43,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:44:43,290 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:43,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:43,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1335597358, now seen corresponding path program 1 times [2020-08-21 15:44:43,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:43,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022973172] [2020-08-21 15:44:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:43,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:43,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:44:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:43,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:43,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:43,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:43,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:44:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:43,714 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 15:44:43,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022973172] [2020-08-21 15:44:43,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:43,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 15:44:43,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774651336] [2020-08-21 15:44:43,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 15:44:43,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:43,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 15:44:43,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-08-21 15:44:43,718 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 22 states. [2020-08-21 15:44:44,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:44,962 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-08-21 15:44:44,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 15:44:44,963 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2020-08-21 15:44:44,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:44,965 INFO L225 Difference]: With dead ends: 65 [2020-08-21 15:44:44,965 INFO L226 Difference]: Without dead ends: 58 [2020-08-21 15:44:44,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 15:44:44,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-21 15:44:44,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-08-21 15:44:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 15:44:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-08-21 15:44:44,978 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 45 [2020-08-21 15:44:44,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:44,979 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-08-21 15:44:44,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 15:44:44,979 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-08-21 15:44:44,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-21 15:44:44,980 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:44,980 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] [2020-08-21 15:44:44,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:44:44,980 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:44,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:44,981 INFO L82 PathProgramCache]: Analyzing trace with hash 526250732, now seen corresponding path program 1 times [2020-08-21 15:44:44,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:44,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973478430] [2020-08-21 15:44:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:45,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:45,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:44:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:45,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:45,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:45,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:45,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:44:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 15:44:45,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973478430] [2020-08-21 15:44:45,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:45,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 15:44:45,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033000429] [2020-08-21 15:44:45,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 15:44:45,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:45,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 15:44:45,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:44:45,246 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 16 states. [2020-08-21 15:44:45,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:45,908 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-08-21 15:44:45,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 15:44:45,909 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-08-21 15:44:45,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:45,911 INFO L225 Difference]: With dead ends: 59 [2020-08-21 15:44:45,911 INFO L226 Difference]: Without dead ends: 56 [2020-08-21 15:44:45,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2020-08-21 15:44:45,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-21 15:44:45,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-08-21 15:44:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 15:44:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-08-21 15:44:45,925 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 45 [2020-08-21 15:44:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:45,925 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-08-21 15:44:45,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 15:44:45,926 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-08-21 15:44:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 15:44:45,927 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:45,927 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] [2020-08-21 15:44:45,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:44:45,927 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:45,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:45,928 INFO L82 PathProgramCache]: Analyzing trace with hash -2119488644, now seen corresponding path program 1 times [2020-08-21 15:44:45,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:45,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626448168] [2020-08-21 15:44:45,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:46,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:46,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:44:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:46,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:46,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:46,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:44:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:46,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:44:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:46,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 15:44:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:44:46,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626448168] [2020-08-21 15:44:46,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:46,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 15:44:46,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74341373] [2020-08-21 15:44:46,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 15:44:46,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:46,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 15:44:46,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-08-21 15:44:46,312 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 22 states. [2020-08-21 15:44:47,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:47,267 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-08-21 15:44:47,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 15:44:47,268 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 57 [2020-08-21 15:44:47,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:47,270 INFO L225 Difference]: With dead ends: 64 [2020-08-21 15:44:47,270 INFO L226 Difference]: Without dead ends: 58 [2020-08-21 15:44:47,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 15:44:47,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-21 15:44:47,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-08-21 15:44:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-21 15:44:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-08-21 15:44:47,282 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 57 [2020-08-21 15:44:47,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:47,285 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-08-21 15:44:47,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 15:44:47,285 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-08-21 15:44:47,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 15:44:47,287 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:47,287 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] [2020-08-21 15:44:47,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:44:47,287 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:47,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:47,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1366132026, now seen corresponding path program 1 times [2020-08-21 15:44:47,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:47,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044591342] [2020-08-21 15:44:47,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:47,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:47,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:44:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:47,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:47,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:47,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:47,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:44:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:47,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:44:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:47,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 15:44:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:44:47,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044591342] [2020-08-21 15:44:47,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:47,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-21 15:44:47,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336840579] [2020-08-21 15:44:47,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-21 15:44:47,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:47,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-21 15:44:47,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2020-08-21 15:44:47,666 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 23 states. [2020-08-21 15:44:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:48,692 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-08-21 15:44:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 15:44:48,692 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 57 [2020-08-21 15:44:48,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:48,694 INFO L225 Difference]: With dead ends: 63 [2020-08-21 15:44:48,694 INFO L226 Difference]: Without dead ends: 49 [2020-08-21 15:44:48,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2020-08-21 15:44:48,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-08-21 15:44:48,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-08-21 15:44:48,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-21 15:44:48,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-08-21 15:44:48,702 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 57 [2020-08-21 15:44:48,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:48,703 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-08-21 15:44:48,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-21 15:44:48,703 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-08-21 15:44:48,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 15:44:48,704 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:48,704 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] [2020-08-21 15:44:48,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:44:48,705 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:48,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:48,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1588672638, now seen corresponding path program 1 times [2020-08-21 15:44:48,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:48,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795144155] [2020-08-21 15:44:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:48,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:48,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:44:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:48,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:48,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:48,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:48,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:44:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:48,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:44:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:49,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 15:44:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-21 15:44:49,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795144155] [2020-08-21 15:44:49,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:49,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 15:44:49,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096061617] [2020-08-21 15:44:49,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 15:44:49,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:49,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 15:44:49,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:44:49,041 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 18 states. [2020-08-21 15:44:49,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:49,868 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-08-21 15:44:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 15:44:49,870 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-08-21 15:44:49,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:49,872 INFO L225 Difference]: With dead ends: 60 [2020-08-21 15:44:49,872 INFO L226 Difference]: Without dead ends: 52 [2020-08-21 15:44:49,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 15:44:49,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-21 15:44:49,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-08-21 15:44:49,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-21 15:44:49,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-08-21 15:44:49,887 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 57 [2020-08-21 15:44:49,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:49,887 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-08-21 15:44:49,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 15:44:49,888 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-08-21 15:44:49,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 15:44:49,889 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:49,892 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] [2020-08-21 15:44:49,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:44:49,893 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:49,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:49,893 INFO L82 PathProgramCache]: Analyzing trace with hash 779326012, now seen corresponding path program 1 times [2020-08-21 15:44:49,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:49,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848400064] [2020-08-21 15:44:49,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:49,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:49,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:44:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:49,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:49,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:49,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:44:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:50,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:44:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:50,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 15:44:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-21 15:44:50,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848400064] [2020-08-21 15:44:50,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:50,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 15:44:50,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953857008] [2020-08-21 15:44:50,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 15:44:50,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:50,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 15:44:50,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:44:50,049 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 10 states. [2020-08-21 15:44:50,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:50,376 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-08-21 15:44:50,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:44:50,376 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-08-21 15:44:50,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:50,377 INFO L225 Difference]: With dead ends: 47 [2020-08-21 15:44:50,377 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 15:44:50,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:44:50,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 15:44:50,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 15:44:50,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 15:44:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 15:44:50,379 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-08-21 15:44:50,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:50,379 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 15:44:50,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 15:44:50,379 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 15:44:50,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 15:44:50,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:44:50,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 15:44:51,189 INFO L268 CegarLoopResult]: For program point my_mallocFINAL(lines 878 880) no Hoare annotation was computed. [2020-08-21 15:44:51,190 INFO L264 CegarLoopResult]: At program point L879(line 879) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= my_malloc_~size 8)) (not (= |my_malloc_#in~size| 8))) [2020-08-21 15:44:51,190 INFO L268 CegarLoopResult]: For program point L879-1(line 879) no Hoare annotation was computed. [2020-08-21 15:44:51,190 INFO L264 CegarLoopResult]: At program point my_mallocENTRY(lines 878 880) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|)) (not (= |my_malloc_#in~size| 8))) [2020-08-21 15:44:51,190 INFO L268 CegarLoopResult]: For program point my_mallocEXIT(lines 878 880) no Hoare annotation was computed. [2020-08-21 15:44:51,190 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 15:44:51,191 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= |~#head~0.base| |old(~#head~0.base)|) (= |old(#length)| |#length|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |~#head~0.offset| |old(~#head~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= ~elem~0.offset |old(~elem~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~elem~0.base |old(~elem~0.base)|) (= |old(#valid)| |#valid|)) [2020-08-21 15:44:51,191 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 15:44:51,191 INFO L268 CegarLoopResult]: For program point L896(lines 896 897) no Hoare annotation was computed. [2020-08-21 15:44:51,192 INFO L268 CegarLoopResult]: For program point L896-2(lines 895 898) no Hoare annotation was computed. [2020-08-21 15:44:51,192 INFO L268 CegarLoopResult]: For program point list_delEXIT(lines 895 898) no Hoare annotation was computed. [2020-08-21 15:44:51,192 INFO L264 CegarLoopResult]: At program point list_delENTRY(lines 895 898) the Hoare annotation is: (and (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)) [2020-08-21 15:44:51,192 INFO L264 CegarLoopResult]: At program point list_addENTRY(lines 889 893) the Hoare annotation is: (let ((.cse0 (and (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)))) (and (or (not (<= 1 ~guard_malloc_counter~0.offset)) (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)) .cse0) (or (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) .cse0))) [2020-08-21 15:44:51,192 INFO L268 CegarLoopResult]: For program point L891(lines 891 892) no Hoare annotation was computed. [2020-08-21 15:44:51,193 INFO L268 CegarLoopResult]: For program point L890(line 890) no Hoare annotation was computed. [2020-08-21 15:44:51,193 INFO L268 CegarLoopResult]: For program point L891-2(lines 889 893) no Hoare annotation was computed. [2020-08-21 15:44:51,193 INFO L264 CegarLoopResult]: At program point L890-2(line 890) the Hoare annotation is: (and (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) (or (not (<= 1 ~guard_malloc_counter~0.offset)) (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)))) [2020-08-21 15:44:51,193 INFO L268 CegarLoopResult]: For program point L890-3(line 890) no Hoare annotation was computed. [2020-08-21 15:44:51,193 INFO L268 CegarLoopResult]: For program point list_addEXIT(lines 889 893) no Hoare annotation was computed. [2020-08-21 15:44:51,194 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-08-21 15:44:51,194 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-08-21 15:44:51,194 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-08-21 15:44:51,194 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-08-21 15:44:51,194 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 15:44:51,194 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~elem~0.offset 0) (<= 0 ~guard_malloc_counter~0.offset)) [2020-08-21 15:44:51,194 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 15:44:51,194 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 15:44:51,194 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 902 917) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-08-21 15:44:51,195 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 902 917) no Hoare annotation was computed. [2020-08-21 15:44:51,195 INFO L264 CegarLoopResult]: At program point L909(line 909) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset))) (or (and .cse0 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (and .cse0 (<= 2 main_~dev2~0.offset) (= ~elem~0.offset 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)))) [2020-08-21 15:44:51,195 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 902 917) no Hoare annotation was computed. [2020-08-21 15:44:51,195 INFO L264 CegarLoopResult]: At program point L908(line 908) the Hoare annotation is: (let ((.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse3 (<= 2 main_~dev2~0.offset))) (or (and .cse0 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset) .cse1 .cse2) (and .cse0 .cse3 .cse1 (= main_~dev2~0.base ~elem~0.base) (= main_~dev2~0.offset ~elem~0.offset) .cse2) (and .cse0 .cse3 (= ~elem~0.offset 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)))) [2020-08-21 15:44:51,195 INFO L264 CegarLoopResult]: At program point L907(line 907) the Hoare annotation is: (or (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.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-08-21 15:44:51,195 INFO L268 CegarLoopResult]: For program point L906(lines 906 915) no Hoare annotation was computed. [2020-08-21 15:44:51,196 INFO L264 CegarLoopResult]: At program point L907-1(line 907) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) (or (and .cse0 (<= 1 main_~dev1~0.offset) .cse1 (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset) .cse2) (and .cse0 (<= 2 main_~dev2~0.offset) .cse1 (= main_~dev2~0.base ~elem~0.base) (= main_~dev2~0.offset ~elem~0.offset) .cse2) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)))) [2020-08-21 15:44:51,196 INFO L264 CegarLoopResult]: At program point L905(line 905) the Hoare annotation is: (or (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.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)) (and (= main_~dev1~0.base 0) (= main_~dev1~0.offset 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-08-21 15:44:51,196 INFO L268 CegarLoopResult]: For program point L906-1(lines 906 915) no Hoare annotation was computed. [2020-08-21 15:44:51,196 INFO L264 CegarLoopResult]: At program point L904(line 904) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-08-21 15:44:51,196 INFO L268 CegarLoopResult]: For program point L905-1(line 905) no Hoare annotation was computed. [2020-08-21 15:44:51,196 INFO L268 CegarLoopResult]: For program point L904-1(line 904) no Hoare annotation was computed. [2020-08-21 15:44:51,196 INFO L264 CegarLoopResult]: At program point __getMemoryENTRY(lines 869 876) the Hoare annotation is: (or (not (= |__getMemory_#in~size| 8)) (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|)) (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-08-21 15:44:51,196 INFO L268 CegarLoopResult]: For program point __getMemoryEXIT(lines 869 876) no Hoare annotation was computed. [2020-08-21 15:44:51,196 INFO L268 CegarLoopResult]: For program point __getMemoryFINAL(lines 869 876) no Hoare annotation was computed. [2020-08-21 15:44:51,197 INFO L268 CegarLoopResult]: For program point L873(lines 873 874) no Hoare annotation was computed. [2020-08-21 15:44:51,197 INFO L268 CegarLoopResult]: For program point L871(line 871) no Hoare annotation was computed. [2020-08-21 15:44:51,197 INFO L264 CegarLoopResult]: At program point L871-2(line 871) the Hoare annotation is: (or (not (= |__getMemory_#in~size| 8)) (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-08-21 15:44:51,197 INFO L268 CegarLoopResult]: For program point L871-3(line 871) no Hoare annotation was computed. [2020-08-21 15:44:51,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:44:51 BoogieIcfgContainer [2020-08-21 15:44:51,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:44:51,204 INFO L168 Benchmark]: Toolchain (without parser) took 12407.95 ms. Allocated memory was 141.0 MB in the beginning and 364.9 MB in the end (delta: 223.9 MB). Free memory was 103.5 MB in the beginning and 253.4 MB in the end (delta: -149.9 MB). Peak memory consumption was 206.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:44:51,205 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 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. [2020-08-21 15:44:51,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.66 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.3 MB in the beginning and 169.0 MB in the end (delta: -65.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-08-21 15:44:51,207 INFO L168 Benchmark]: Boogie Preprocessor took 63.47 ms. Allocated memory is still 203.4 MB. Free memory was 169.0 MB in the beginning and 166.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:44:51,207 INFO L168 Benchmark]: RCFGBuilder took 610.85 ms. Allocated memory is still 203.4 MB. Free memory was 166.4 MB in the beginning and 120.5 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2020-08-21 15:44:51,208 INFO L168 Benchmark]: TraceAbstraction took 11024.68 ms. Allocated memory was 203.4 MB in the beginning and 364.9 MB in the end (delta: 161.5 MB). Free memory was 119.8 MB in the beginning and 253.4 MB in the end (delta: -133.6 MB). Peak memory consumption was 160.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:44:51,212 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 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 702.66 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.3 MB in the beginning and 169.0 MB in the end (delta: -65.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.47 ms. Allocated memory is still 203.4 MB. Free memory was 169.0 MB in the beginning and 166.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 610.85 ms. Allocated memory is still 203.4 MB. Free memory was 166.4 MB in the beginning and 120.5 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11024.68 ms. Allocated memory was 203.4 MB in the beginning and 364.9 MB in the end (delta: 161.5 MB). Free memory was 119.8 MB in the beginning and 253.4 MB in the end (delta: -133.6 MB). Peak memory consumption was 160.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.1s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 348 SDtfs, 471 SDslu, 891 SDs, 0 SdLazy, 4516 SolverSat, 437 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 73 PreInvPairs, 84 NumberOfFragments, 426 HoareAnnotationTreeSize, 73 FomulaSimplifications, 1366 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 18 FomulaSimplificationsInter, 996 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 445 NumberOfCodeBlocks, 445 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 435 ConstructedInterpolants, 0 QuantifiedInterpolants, 89234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 90/143 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...