/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:58:29,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:58:29,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:58:29,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:58:29,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:58:29,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:58:29,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:58:29,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:58:29,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:58:29,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:58:29,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:58:29,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:58:29,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:58:29,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:58:29,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:58:29,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:58:29,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:58:29,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:58:29,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:58:29,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:58:29,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:58:29,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:58:29,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:58:29,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:58:29,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:58:29,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:58:29,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:58:29,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:58:29,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:58:29,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 14:58:29,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:58:29,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:58:29,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:58:29,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:58:29,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:58:29,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:58:29,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:58:29,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:58:29,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:58:29,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:58:29,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:58:29,091 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 [2020-09-24 14:58:29,119 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:58:29,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:58:29,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:58:29,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:58:29,121 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:58:29,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:58:29,121 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:58:29,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:58:29,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:58:29,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:58:29,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:58:29,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:58:29,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:58:29,123 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:58:29,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:58:29,123 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:58:29,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:58:29,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:58:29,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:58:29,124 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:58:29,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:58:29,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:58:29,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:58:29,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:58:29,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:58:29,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:58:29,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:58:29,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:58:29,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:58:29,126 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:58:29,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:58:29,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:58:29,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:58:29,634 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:58:29,635 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:58:29,637 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-09-24 14:58:29,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8beb50f33/114b21f86d804a0cb2c8d805259ef34c/FLAG7722cbe92 [2020-09-24 14:58:30,340 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:58:30,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-09-24 14:58:30,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8beb50f33/114b21f86d804a0cb2c8d805259ef34c/FLAG7722cbe92 [2020-09-24 14:58:30,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8beb50f33/114b21f86d804a0cb2c8d805259ef34c [2020-09-24 14:58:30,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:58:30,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:58:30,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:58:30,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:58:30,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:58:30,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:58:30" (1/1) ... [2020-09-24 14:58:30,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490952e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:30, skipping insertion in model container [2020-09-24 14:58:30,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:58:30" (1/1) ... [2020-09-24 14:58:30,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:58:30,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:58:30,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:58:30,983 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:58:31,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:58:31,207 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:58:31,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31 WrapperNode [2020-09-24 14:58:31,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:58:31,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:58:31,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:58:31,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:58:31,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (1/1) ... [2020-09-24 14:58:31,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (1/1) ... [2020-09-24 14:58:31,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (1/1) ... [2020-09-24 14:58:31,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (1/1) ... [2020-09-24 14:58:31,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (1/1) ... [2020-09-24 14:58:31,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (1/1) ... [2020-09-24 14:58:31,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (1/1) ... [2020-09-24 14:58:31,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:58:31,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:58:31,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:58:31,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:58:31,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (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 [2020-09-24 14:58:31,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:58:31,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:58:31,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-24 14:58:31,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-09-24 14:58:31,351 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-09-24 14:58:31,351 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-09-24 14:58:31,351 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-09-24 14:58:31,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:58:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:58:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-24 14:58:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-09-24 14:58:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-09-24 14:58:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-09-24 14:58:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-09-24 14:58:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-09-24 14:58:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-09-24 14:58:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-09-24 14:58:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-09-24 14:58:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-09-24 14:58:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-09-24 14:58:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-09-24 14:58:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-09-24 14:58:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-09-24 14:58:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-09-24 14:58:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-09-24 14:58:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-09-24 14:58:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-09-24 14:58:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-09-24 14:58:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-09-24 14:58:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-09-24 14:58:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-09-24 14:58:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-09-24 14:58:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-09-24 14:58:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-09-24 14:58:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-09-24 14:58:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-09-24 14:58:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-09-24 14:58:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-09-24 14:58:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-24 14:58:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-09-24 14:58:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-09-24 14:58:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-09-24 14:58:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-09-24 14:58:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-09-24 14:58:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-09-24 14:58:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-09-24 14:58:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-09-24 14:58:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-09-24 14:58:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 14:58:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-09-24 14:58:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-09-24 14:58:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-09-24 14:58:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-09-24 14:58:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-09-24 14:58:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-09-24 14:58:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-09-24 14:58:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-09-24 14:58:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-09-24 14:58:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-09-24 14:58:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-09-24 14:58:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-09-24 14:58:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-09-24 14:58:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-09-24 14:58:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-09-24 14:58:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-24 14:58:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-09-24 14:58:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-09-24 14:58:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-09-24 14:58:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-09-24 14:58:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-09-24 14:58:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-09-24 14:58:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-09-24 14:58:31,368 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-09-24 14:58:31,368 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-09-24 14:58:31,368 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-09-24 14:58:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-09-24 14:58:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-09-24 14:58:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-09-24 14:58:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-09-24 14:58:31,371 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-09-24 14:58:31,371 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-09-24 14:58:31,371 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-09-24 14:58:31,371 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-09-24 14:58:31,371 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-09-24 14:58:31,371 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-09-24 14:58:31,372 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-09-24 14:58:31,372 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-09-24 14:58:31,373 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-09-24 14:58:31,373 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-09-24 14:58:31,373 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-09-24 14:58:31,373 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-09-24 14:58:31,373 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-09-24 14:58:31,373 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-09-24 14:58:31,374 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-09-24 14:58:31,374 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-09-24 14:58:31,374 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-09-24 14:58:31,374 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-09-24 14:58:31,374 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-09-24 14:58:31,374 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-09-24 14:58:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-09-24 14:58:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-09-24 14:58:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-09-24 14:58:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-09-24 14:58:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-09-24 14:58:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-09-24 14:58:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-09-24 14:58:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-09-24 14:58:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-09-24 14:58:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-09-24 14:58:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-09-24 14:58:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-09-24 14:58:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 14:58:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 14:58:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 14:58:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 14:58:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 14:58:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-09-24 14:58:31,378 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 14:58:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-09-24 14:58:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-09-24 14:58:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-09-24 14:58:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-09-24 14:58:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-09-24 14:58:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-09-24 14:58:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-09-24 14:58:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-09-24 14:58:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-09-24 14:58:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-09-24 14:58:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-09-24 14:58:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:58:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-09-24 14:58:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-09-24 14:58:31,383 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-09-24 14:58:31,387 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-09-24 14:58:31,387 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:58:31,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:58:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:58:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 14:58:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:58:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 14:58:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 14:58:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:58:31,874 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:58:31,874 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 14:58:31,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:58:31 BoogieIcfgContainer [2020-09-24 14:58:31,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:58:31,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:58:31,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:58:31,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:58:31,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:58:30" (1/3) ... [2020-09-24 14:58:31,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8f23cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:58:31, skipping insertion in model container [2020-09-24 14:58:31,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (2/3) ... [2020-09-24 14:58:31,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8f23cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:58:31, skipping insertion in model container [2020-09-24 14:58:31,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:58:31" (3/3) ... [2020-09-24 14:58:31,895 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-09-24 14:58:31,907 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:58:31,919 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:58:31,941 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:58:31,967 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:58:31,968 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:58:31,968 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:58:31,968 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:58:31,968 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:58:31,968 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:58:31,968 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:58:31,968 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:58:31,989 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-09-24 14:58:31,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 14:58:31,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:31,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:31,998 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:32,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:32,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1490968618, now seen corresponding path program 1 times [2020-09-24 14:58:32,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:32,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296613523] [2020-09-24 14:58:32,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:32,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:32,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296613523] [2020-09-24 14:58:32,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:32,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 14:58:32,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222734229] [2020-09-24 14:58:32,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 14:58:32,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:32,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 14:58:32,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:58:32,401 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 7 states. [2020-09-24 14:58:32,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:32,935 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2020-09-24 14:58:32,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 14:58:32,937 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-09-24 14:58:32,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:32,952 INFO L225 Difference]: With dead ends: 128 [2020-09-24 14:58:32,952 INFO L226 Difference]: Without dead ends: 67 [2020-09-24 14:58:32,957 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 [2020-09-24 14:58:32,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-24 14:58:33,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-09-24 14:58:33,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-24 14:58:33,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-09-24 14:58:33,015 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 21 [2020-09-24 14:58:33,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:33,015 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-09-24 14:58:33,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 14:58:33,016 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-09-24 14:58:33,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 14:58:33,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:33,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1] [2020-09-24 14:58:33,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:58:33,020 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:33,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:33,020 INFO L82 PathProgramCache]: Analyzing trace with hash -114203518, now seen corresponding path program 1 times [2020-09-24 14:58:33,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:33,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132430036] [2020-09-24 14:58:33,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:33,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:33,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 14:58:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:33,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:33,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 14:58:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:33,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 14:58:33,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132430036] [2020-09-24 14:58:33,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:33,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 14:58:33,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194947089] [2020-09-24 14:58:33,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 14:58:33,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:33,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 14:58:33,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 14:58:33,380 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 9 states. [2020-09-24 14:58:33,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:33,677 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2020-09-24 14:58:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 14:58:33,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-09-24 14:58:33,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:33,680 INFO L225 Difference]: With dead ends: 99 [2020-09-24 14:58:33,680 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 14:58:33,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:58:33,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 14:58:33,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2020-09-24 14:58:33,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 14:58:33,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-09-24 14:58:33,718 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 61 [2020-09-24 14:58:33,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:33,719 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-09-24 14:58:33,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 14:58:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-09-24 14:58:33,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 14:58:33,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:33,721 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:33,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:58:33,725 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:33,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:33,725 INFO L82 PathProgramCache]: Analyzing trace with hash -577094017, now seen corresponding path program 1 times [2020-09-24 14:58:33,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:33,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408310061] [2020-09-24 14:58:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:33,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:33,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 14:58:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:34,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:34,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 14:58:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:34,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 14:58:34,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408310061] [2020-09-24 14:58:34,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:58:34,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 14:58:34,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018947166] [2020-09-24 14:58:34,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 14:58:34,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:34,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 14:58:34,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 14:58:34,124 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 9 states. [2020-09-24 14:58:34,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:34,409 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2020-09-24 14:58:34,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 14:58:34,410 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-09-24 14:58:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:34,412 INFO L225 Difference]: With dead ends: 102 [2020-09-24 14:58:34,412 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 14:58:34,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:58:34,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 14:58:34,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2020-09-24 14:58:34,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 14:58:34,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-09-24 14:58:34,424 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 61 [2020-09-24 14:58:34,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:34,425 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-09-24 14:58:34,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 14:58:34,425 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-09-24 14:58:34,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 14:58:34,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:34,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1] [2020-09-24 14:58:34,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:58:34,427 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:34,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:34,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1723385860, now seen corresponding path program 1 times [2020-09-24 14:58:34,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:34,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165134345] [2020-09-24 14:58:34,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:34,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:34,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 14:58:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:34,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:34,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 14:58:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:34,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:34,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 14:58:34,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165134345] [2020-09-24 14:58:34,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:58:34,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 14:58:34,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336638902] [2020-09-24 14:58:34,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 14:58:34,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:34,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 14:58:34,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-09-24 14:58:34,804 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 17 states. [2020-09-24 14:58:36,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:36,078 INFO L93 Difference]: Finished difference Result 108 states and 121 transitions. [2020-09-24 14:58:36,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 14:58:36,084 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 61 [2020-09-24 14:58:36,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:36,086 INFO L225 Difference]: With dead ends: 108 [2020-09-24 14:58:36,086 INFO L226 Difference]: Without dead ends: 105 [2020-09-24 14:58:36,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 14:58:36,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-24 14:58:36,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2020-09-24 14:58:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-24 14:58:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2020-09-24 14:58:36,115 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 61 [2020-09-24 14:58:36,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:36,115 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2020-09-24 14:58:36,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 14:58:36,121 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2020-09-24 14:58:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 14:58:36,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:36,123 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:36,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:58:36,123 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:36,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:36,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1814582916, now seen corresponding path program 1 times [2020-09-24 14:58:36,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:36,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518161522] [2020-09-24 14:58:36,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:36,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:36,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 14:58:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:36,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:36,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 14:58:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:36,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:36,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 14:58:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 14:58:36,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518161522] [2020-09-24 14:58:36,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:58:36,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 14:58:36,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464847463] [2020-09-24 14:58:36,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 14:58:36,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:36,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 14:58:36,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-24 14:58:36,526 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand 18 states. [2020-09-24 14:58:37,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:37,653 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2020-09-24 14:58:37,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 14:58:37,654 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 70 [2020-09-24 14:58:37,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:37,657 INFO L225 Difference]: With dead ends: 113 [2020-09-24 14:58:37,657 INFO L226 Difference]: Without dead ends: 104 [2020-09-24 14:58:37,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 14:58:37,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-24 14:58:37,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2020-09-24 14:58:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-24 14:58:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2020-09-24 14:58:37,674 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 70 [2020-09-24 14:58:37,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:37,675 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2020-09-24 14:58:37,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 14:58:37,675 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2020-09-24 14:58:37,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 14:58:37,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:37,676 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:37,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:58:37,677 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:37,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:37,677 INFO L82 PathProgramCache]: Analyzing trace with hash 983151375, now seen corresponding path program 1 times [2020-09-24 14:58:37,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:37,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529478755] [2020-09-24 14:58:37,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:37,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:37,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 14:58:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:37,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:37,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 14:58:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:37,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:38,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 14:58:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 14:58:38,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529478755] [2020-09-24 14:58:38,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:58:38,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 14:58:38,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620109057] [2020-09-24 14:58:38,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 14:58:38,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:38,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 14:58:38,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-09-24 14:58:38,123 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand 23 states. [2020-09-24 14:58:39,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:39,872 INFO L93 Difference]: Finished difference Result 112 states and 129 transitions. [2020-09-24 14:58:39,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 14:58:39,872 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 71 [2020-09-24 14:58:39,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:39,876 INFO L225 Difference]: With dead ends: 112 [2020-09-24 14:58:39,876 INFO L226 Difference]: Without dead ends: 105 [2020-09-24 14:58:39,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 14:58:39,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-24 14:58:39,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-09-24 14:58:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-24 14:58:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2020-09-24 14:58:39,900 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 71 [2020-09-24 14:58:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:39,900 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2020-09-24 14:58:39,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 14:58:39,901 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2020-09-24 14:58:39,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 14:58:39,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:39,903 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:39,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:58:39,903 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:39,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:39,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1660138148, now seen corresponding path program 1 times [2020-09-24 14:58:39,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:39,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885241362] [2020-09-24 14:58:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:40,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:40,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 14:58:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:40,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:40,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 14:58:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:40,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:40,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 14:58:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:40,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 14:58:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:40,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 14:58:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 14:58:40,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885241362] [2020-09-24 14:58:40,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:58:40,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-24 14:58:40,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434326266] [2020-09-24 14:58:40,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-24 14:58:40,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:40,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-24 14:58:40,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-09-24 14:58:40,421 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand 24 states. [2020-09-24 14:58:42,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:42,046 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-09-24 14:58:42,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 14:58:42,047 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 85 [2020-09-24 14:58:42,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:42,050 INFO L225 Difference]: With dead ends: 118 [2020-09-24 14:58:42,051 INFO L226 Difference]: Without dead ends: 113 [2020-09-24 14:58:42,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=232, Invalid=1748, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 14:58:42,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-24 14:58:42,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2020-09-24 14:58:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-24 14:58:42,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2020-09-24 14:58:42,065 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 85 [2020-09-24 14:58:42,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:42,069 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2020-09-24 14:58:42,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-24 14:58:42,069 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2020-09-24 14:58:42,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 14:58:42,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:42,071 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:42,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:58:42,076 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:42,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:42,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1173492322, now seen corresponding path program 2 times [2020-09-24 14:58:42,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:42,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040508556] [2020-09-24 14:58:42,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:42,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:42,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 14:58:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:42,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:42,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 14:58:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:42,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:42,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 14:58:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:42,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 14:58:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:42,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 14:58:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-24 14:58:42,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040508556] [2020-09-24 14:58:42,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:58:42,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 14:58:42,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191921801] [2020-09-24 14:58:42,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 14:58:42,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:42,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 14:58:42,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:58:42,320 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 10 states. [2020-09-24 14:58:42,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:42,916 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2020-09-24 14:58:42,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 14:58:42,918 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-09-24 14:58:42,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:42,920 INFO L225 Difference]: With dead ends: 127 [2020-09-24 14:58:42,920 INFO L226 Difference]: Without dead ends: 111 [2020-09-24 14:58:42,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-09-24 14:58:42,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-24 14:58:42,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-09-24 14:58:42,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-24 14:58:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-09-24 14:58:42,942 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 85 [2020-09-24 14:58:42,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:42,943 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-09-24 14:58:42,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 14:58:42,943 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-09-24 14:58:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 14:58:42,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:42,945 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:42,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:58:42,945 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:42,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:42,946 INFO L82 PathProgramCache]: Analyzing trace with hash 2046230471, now seen corresponding path program 1 times [2020-09-24 14:58:42,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:42,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219681632] [2020-09-24 14:58:42,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:43,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:43,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 14:58:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:43,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:43,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 14:58:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:43,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:43,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 14:58:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:43,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 14:58:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:43,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 14:58:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 14:58:43,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219681632] [2020-09-24 14:58:43,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:58:43,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 14:58:43,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35428966] [2020-09-24 14:58:43,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 14:58:43,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:43,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 14:58:43,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-09-24 14:58:43,451 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand 23 states. [2020-09-24 14:58:45,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:45,100 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-09-24 14:58:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 14:58:45,101 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2020-09-24 14:58:45,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:45,102 INFO L225 Difference]: With dead ends: 129 [2020-09-24 14:58:45,103 INFO L226 Difference]: Without dead ends: 112 [2020-09-24 14:58:45,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=1766, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 14:58:45,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-24 14:58:45,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-09-24 14:58:45,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-24 14:58:45,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2020-09-24 14:58:45,117 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 86 [2020-09-24 14:58:45,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:45,118 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2020-09-24 14:58:45,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 14:58:45,118 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2020-09-24 14:58:45,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 14:58:45,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:45,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:45,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:58:45,120 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:45,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:45,121 INFO L82 PathProgramCache]: Analyzing trace with hash -305538175, now seen corresponding path program 2 times [2020-09-24 14:58:45,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:45,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852857996] [2020-09-24 14:58:45,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:45,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:45,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 14:58:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:45,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:45,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 14:58:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:45,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:45,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 14:58:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:45,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 14:58:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:45,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 14:58:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-24 14:58:45,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852857996] [2020-09-24 14:58:45,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:58:45,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 14:58:45,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154183335] [2020-09-24 14:58:45,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 14:58:45,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:45,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 14:58:45,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-09-24 14:58:45,517 INFO L87 Difference]: Start difference. First operand 111 states and 120 transitions. Second operand 19 states. [2020-09-24 14:58:46,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:46,933 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-09-24 14:58:46,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 14:58:46,934 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2020-09-24 14:58:46,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:46,935 INFO L225 Difference]: With dead ends: 144 [2020-09-24 14:58:46,935 INFO L226 Difference]: Without dead ends: 131 [2020-09-24 14:58:46,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=253, Invalid=1469, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 14:58:46,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-24 14:58:46,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 110. [2020-09-24 14:58:46,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-24 14:58:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-09-24 14:58:46,958 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 86 [2020-09-24 14:58:46,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:46,958 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-09-24 14:58:46,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 14:58:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-09-24 14:58:46,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-24 14:58:46,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:46,963 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:46,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 14:58:46,963 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:46,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:46,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1959566780, now seen corresponding path program 1 times [2020-09-24 14:58:46,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:46,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109746036] [2020-09-24 14:58:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:47,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:47,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 14:58:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:47,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:47,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 14:58:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:47,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:58:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:47,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 14:58:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:47,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 14:58:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:47,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 14:58:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:47,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 14:58:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-24 14:58:47,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109746036] [2020-09-24 14:58:47,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:58:47,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 14:58:47,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616450883] [2020-09-24 14:58:47,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 14:58:47,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:47,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 14:58:47,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-09-24 14:58:47,528 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 19 states. [2020-09-24 14:58:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:49,091 INFO L93 Difference]: Finished difference Result 137 states and 144 transitions. [2020-09-24 14:58:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 14:58:49,092 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 94 [2020-09-24 14:58:49,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:49,093 INFO L225 Difference]: With dead ends: 137 [2020-09-24 14:58:49,094 INFO L226 Difference]: Without dead ends: 108 [2020-09-24 14:58:49,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2020-09-24 14:58:49,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-24 14:58:49,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2020-09-24 14:58:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-24 14:58:49,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2020-09-24 14:58:49,103 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 94 [2020-09-24 14:58:49,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:49,103 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2020-09-24 14:58:49,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 14:58:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2020-09-24 14:58:49,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-24 14:58:49,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:49,108 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:49,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 14:58:49,108 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:49,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:49,108 INFO L82 PathProgramCache]: Analyzing trace with hash -416868516, now seen corresponding path program 1 times [2020-09-24 14:58:49,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:49,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237995722] [2020-09-24 14:58:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:58:49,144 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:58:49,144 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:58:49,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 14:58:49,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:58:49 BoogieIcfgContainer [2020-09-24 14:58:49,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:58:49,183 INFO L168 Benchmark]: Toolchain (without parser) took 18609.72 ms. Allocated memory was 138.9 MB in the beginning and 430.4 MB in the end (delta: 291.5 MB). Free memory was 101.7 MB in the beginning and 368.7 MB in the end (delta: -267.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:49,188 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 14:58:49,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.24 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 167.2 MB in the end (delta: -66.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:49,193 INFO L168 Benchmark]: Boogie Preprocessor took 60.11 ms. Allocated memory is still 201.9 MB. Free memory was 167.2 MB in the beginning and 164.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:49,194 INFO L168 Benchmark]: RCFGBuilder took 610.33 ms. Allocated memory is still 201.9 MB. Free memory was 164.4 MB in the beginning and 117.6 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:49,196 INFO L168 Benchmark]: TraceAbstraction took 17298.23 ms. Allocated memory was 201.9 MB in the beginning and 430.4 MB in the end (delta: 228.6 MB). Free memory was 116.9 MB in the beginning and 368.7 MB in the end (delta: -251.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 14:58:49,206 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 632.24 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 167.2 MB in the end (delta: -66.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.11 ms. Allocated memory is still 201.9 MB. Free memory was 167.2 MB in the beginning and 164.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 610.33 ms. Allocated memory is still 201.9 MB. Free memory was 164.4 MB in the beginning and 117.6 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17298.23 ms. Allocated memory was 201.9 MB in the beginning and 430.4 MB in the end (delta: 228.6 MB). Free memory was 116.9 MB in the beginning and 368.7 MB in the end (delta: -251.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L867] void * guard_malloc_counter = 0; [L887] struct list_head *elem = ((void *)0); [L900] static struct list_head head; [L903] struct list_head *dev1, *dev2; [L904] CALL, EXPR my_malloc(sizeof(*dev1)) [L879] CALL, EXPR __getMemory(size) [L871] (size > 0) ? (0) : __blast_assert () [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; [L879] RET, EXPR __getMemory(size) [L879] return __getMemory(size); [L904] RET, EXPR my_malloc(sizeof(*dev1)) [L904] dev1 = my_malloc(sizeof(*dev1)) [L905] CALL, EXPR my_malloc(sizeof(*dev2)) [L879] CALL, EXPR __getMemory(size) [L871] (size > 0) ? (0) : __blast_assert () [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; [L879] RET, EXPR __getMemory(size) [L879] return __getMemory(size); [L905] RET, EXPR my_malloc(sizeof(*dev2)) [L905] dev2 = my_malloc(sizeof(*dev2)) [L906] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) [L907] CALL list_add(dev2, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L891] COND FALSE !(__VERIFIER_nondet_int()) [L907] RET list_add(dev2, &head) [L908] CALL list_add(dev1, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new [L908] RET list_add(dev1, &head) [L909] CALL list_del(dev2) [L896] COND FALSE !(entry==elem) [L909] RET list_del(dev2) [L910] CALL list_add(dev2, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L891] COND FALSE !(__VERIFIER_nondet_int()) [L910] RET list_add(dev2, &head) [L913] CALL list_add(dev1, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L890] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.1s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 629 SDtfs, 1155 SDslu, 2224 SDs, 0 SdLazy, 7398 SolverSat, 641 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 454 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred 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: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 72 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 875 NumberOfCodeBlocks, 875 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 770 ConstructedInterpolants, 0 QuantifiedInterpolants, 225364 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 170/259 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...