/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:21:04,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:21:04,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:21:04,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:21:04,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:21:04,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:21:04,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:21:04,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:21:04,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:21:04,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:21:04,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:21:04,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:21:04,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:21:04,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:21:04,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:21:04,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:21:04,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:21:04,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:21:04,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:21:04,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:21:04,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:21:04,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:21:04,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:21:04,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:21:04,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:21:04,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:21:04,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:21:04,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:21:04,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:21:04,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:21:04,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:21:04,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:21:04,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:21:04,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:21:04,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:21:04,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:21:04,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:21:04,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:21:04,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:21:04,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:21:04,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:21:04,787 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 [2020-09-21 10:21:04,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:21:04,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:21:04,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:21:04,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:21:04,816 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:21:04,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:21:04,816 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:21:04,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:21:04,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:21:04,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:21:04,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:21:04,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:21:04,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:21:04,817 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:21:04,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:21:04,818 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:21:04,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:21:04,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:21:04,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:21:04,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:21:04,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:21:04,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:21:04,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:21:04,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:21:04,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:21:04,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:21:04,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:21:04,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:21:04,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:21:04,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:21:05,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:21:05,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:21:05,312 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:21:05,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:21:05,314 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:21:05,316 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-09-21 10:21:05,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58b41b940/c952056347fa4ce18f9704562ec25910/FLAG65d8813b3 [2020-09-21 10:21:06,100 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:21:06,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-09-21 10:21:06,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58b41b940/c952056347fa4ce18f9704562ec25910/FLAG65d8813b3 [2020-09-21 10:21:06,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58b41b940/c952056347fa4ce18f9704562ec25910 [2020-09-21 10:21:06,408 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:21:06,413 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:21:06,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:21:06,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:21:06,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:21:06,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:21:06" (1/1) ... [2020-09-21 10:21:06,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ca24e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:06, skipping insertion in model container [2020-09-21 10:21:06,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:21:06" (1/1) ... [2020-09-21 10:21:06,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:21:06,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:21:06,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:21:06,938 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:21:06,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:21:07,073 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:21:07,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:07 WrapperNode [2020-09-21 10:21:07,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:21:07,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:21:07,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:21:07,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:21:07,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:07" (1/1) ... [2020-09-21 10:21:07,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:07" (1/1) ... [2020-09-21 10:21:07,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:07" (1/1) ... [2020-09-21 10:21:07,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:07" (1/1) ... [2020-09-21 10:21:07,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:07" (1/1) ... [2020-09-21 10:21:07,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:07" (1/1) ... [2020-09-21 10:21:07,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:07" (1/1) ... [2020-09-21 10:21:07,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:21:07,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:21:07,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:21:07,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:21:07,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:07" (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 [2020-09-21 10:21:07,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:21:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:21:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-21 10:21:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-09-21 10:21:07,295 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-09-21 10:21:07,295 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-09-21 10:21:07,296 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-09-21 10:21:07,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:21:07,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:21:07,297 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-21 10:21:07,297 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-09-21 10:21:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-09-21 10:21:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-09-21 10:21:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-09-21 10:21:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-09-21 10:21:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-09-21 10:21:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-09-21 10:21:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-09-21 10:21:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-09-21 10:21:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-09-21 10:21:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-09-21 10:21:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-09-21 10:21:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-09-21 10:21:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-09-21 10:21:07,304 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-09-21 10:21:07,304 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-09-21 10:21:07,304 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-09-21 10:21:07,304 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-09-21 10:21:07,304 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-09-21 10:21:07,305 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-09-21 10:21:07,305 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-09-21 10:21:07,305 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-09-21 10:21:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-09-21 10:21:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-09-21 10:21:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-09-21 10:21:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-09-21 10:21:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-09-21 10:21:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-09-21 10:21:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-21 10:21:07,307 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-09-21 10:21:07,307 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-09-21 10:21:07,307 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-09-21 10:21:07,307 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-09-21 10:21:07,307 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-09-21 10:21:07,307 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-09-21 10:21:07,307 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-09-21 10:21:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-09-21 10:21:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-09-21 10:21:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:21:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-09-21 10:21:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-09-21 10:21:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-09-21 10:21:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-09-21 10:21:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-09-21 10:21:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-09-21 10:21:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-09-21 10:21:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-09-21 10:21:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-09-21 10:21:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-09-21 10:21:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-09-21 10:21:07,311 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-09-21 10:21:07,311 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-09-21 10:21:07,311 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-09-21 10:21:07,311 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-09-21 10:21:07,311 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-21 10:21:07,311 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-09-21 10:21:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-09-21 10:21:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-09-21 10:21:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-09-21 10:21:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-09-21 10:21:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-09-21 10:21:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-09-21 10:21:07,312 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-09-21 10:21:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-09-21 10:21:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-09-21 10:21:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-09-21 10:21:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-09-21 10:21:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-09-21 10:21:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-09-21 10:21:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-09-21 10:21:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-09-21 10:21:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-09-21 10:21:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-09-21 10:21:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-09-21 10:21:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-09-21 10:21:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-09-21 10:21:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-09-21 10:21:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-09-21 10:21:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-09-21 10:21:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-09-21 10:21:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-09-21 10:21:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-09-21 10:21:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-09-21 10:21:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-09-21 10:21:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-09-21 10:21:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-09-21 10:21:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-09-21 10:21:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-09-21 10:21:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-09-21 10:21:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-09-21 10:21:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-09-21 10:21:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-09-21 10:21:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-09-21 10:21:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-09-21 10:21:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-09-21 10:21:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-09-21 10:21:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-09-21 10:21:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-09-21 10:21:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-09-21 10:21:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-09-21 10:21:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-09-21 10:21:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:21:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 10:21:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 10:21:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:21:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 10:21:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-09-21 10:21:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 10:21:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-09-21 10:21:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-09-21 10:21:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-09-21 10:21:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-09-21 10:21:07,321 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-09-21 10:21:07,321 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-09-21 10:21:07,321 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-09-21 10:21:07,321 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-09-21 10:21:07,321 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-09-21 10:21:07,321 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-09-21 10:21:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-09-21 10:21:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:21:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-09-21 10:21:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-09-21 10:21:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-09-21 10:21:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-09-21 10:21:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:21:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:21:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:21:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 10:21:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:21:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:21:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:21:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:21:07,877 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:21:07,878 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 10:21:07,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:21:07 BoogieIcfgContainer [2020-09-21 10:21:07,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:21:07,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:21:07,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:21:07,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:21:07,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:21:06" (1/3) ... [2020-09-21 10:21:07,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d91dc5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:21:07, skipping insertion in model container [2020-09-21 10:21:07,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:07" (2/3) ... [2020-09-21 10:21:07,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d91dc5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:21:07, skipping insertion in model container [2020-09-21 10:21:07,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:21:07" (3/3) ... [2020-09-21 10:21:07,907 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-09-21 10:21:07,920 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:21:07,932 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:21:07,953 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:21:07,982 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:21:07,982 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:21:07,982 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:21:07,982 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:21:07,983 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:21:07,983 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:21:07,983 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:21:07,983 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:21:08,008 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-09-21 10:21:08,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 10:21:08,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:21:08,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:21:08,019 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:21:08,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:21:08,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1135050545, now seen corresponding path program 1 times [2020-09-21 10:21:08,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:21:08,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93852577] [2020-09-21 10:21:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:21:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:08,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:21:08,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93852577] [2020-09-21 10:21:08,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:21:08,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:21:08,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278396001] [2020-09-21 10:21:08,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:21:08,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:21:08,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:21:08,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:21:08,444 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 7 states. [2020-09-21 10:21:08,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:21:08,930 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2020-09-21 10:21:08,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:21:08,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-09-21 10:21:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:21:08,948 INFO L225 Difference]: With dead ends: 88 [2020-09-21 10:21:08,949 INFO L226 Difference]: Without dead ends: 43 [2020-09-21 10:21:08,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-21 10:21:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-21 10:21:09,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-09-21 10:21:09,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 10:21:09,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-09-21 10:21:09,022 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 13 [2020-09-21 10:21:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:21:09,023 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-09-21 10:21:09,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:21:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-09-21 10:21:09,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 10:21:09,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:21:09,026 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:21:09,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:21:09,027 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:21:09,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:21:09,028 INFO L82 PathProgramCache]: Analyzing trace with hash -925661111, now seen corresponding path program 1 times [2020-09-21 10:21:09,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:21:09,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326451651] [2020-09-21 10:21:09,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:21:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:09,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:09,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:21:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:09,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:09,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:21:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:09,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 10:21:09,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326451651] [2020-09-21 10:21:09,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:21:09,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:21:09,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660446118] [2020-09-21 10:21:09,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:21:09,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:21:09,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:21:09,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:21:09,493 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2020-09-21 10:21:09,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:21:09,702 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-09-21 10:21:09,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:21:09,703 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-09-21 10:21:09,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:21:09,705 INFO L225 Difference]: With dead ends: 67 [2020-09-21 10:21:09,706 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 10:21:09,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:21:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 10:21:09,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-09-21 10:21:09,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-21 10:21:09,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-09-21 10:21:09,721 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 38 [2020-09-21 10:21:09,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:21:09,721 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-09-21 10:21:09,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:21:09,722 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-09-21 10:21:09,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 10:21:09,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:21:09,723 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:21:09,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:21:09,724 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:21:09,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:21:09,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1219064118, now seen corresponding path program 1 times [2020-09-21 10:21:09,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:21:09,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405517278] [2020-09-21 10:21:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:21:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:09,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:09,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:21:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:09,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:09,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:21:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:09,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 10:21:09,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405517278] [2020-09-21 10:21:09,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:21:09,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 10:21:09,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70001729] [2020-09-21 10:21:09,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:21:09,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:21:09,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:21:09,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:21:09,988 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 9 states. [2020-09-21 10:21:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:21:10,186 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-09-21 10:21:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:21:10,187 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-09-21 10:21:10,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:21:10,188 INFO L225 Difference]: With dead ends: 69 [2020-09-21 10:21:10,188 INFO L226 Difference]: Without dead ends: 43 [2020-09-21 10:21:10,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:21:10,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-21 10:21:10,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-09-21 10:21:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 10:21:10,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-09-21 10:21:10,199 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 38 [2020-09-21 10:21:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:21:10,199 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-09-21 10:21:10,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:21:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-09-21 10:21:10,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 10:21:10,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:21:10,201 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:21:10,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:21:10,202 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:21:10,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:21:10,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1188044311, now seen corresponding path program 1 times [2020-09-21 10:21:10,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:21:10,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672887635] [2020-09-21 10:21:10,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:21:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:10,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:10,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:21:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:10,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:10,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:21:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:10,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 10:21:10,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672887635] [2020-09-21 10:21:10,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:21:10,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-21 10:21:10,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447387143] [2020-09-21 10:21:10,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-21 10:21:10,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:21:10,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-21 10:21:10,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:21:10,565 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 15 states. [2020-09-21 10:21:11,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:21:11,563 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2020-09-21 10:21:11,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 10:21:11,563 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-09-21 10:21:11,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:21:11,565 INFO L225 Difference]: With dead ends: 75 [2020-09-21 10:21:11,565 INFO L226 Difference]: Without dead ends: 62 [2020-09-21 10:21:11,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-09-21 10:21:11,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-21 10:21:11,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2020-09-21 10:21:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-21 10:21:11,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-09-21 10:21:11,578 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 38 [2020-09-21 10:21:11,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:21:11,579 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-09-21 10:21:11,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-21 10:21:11,579 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-09-21 10:21:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-21 10:21:11,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:21:11,580 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:21:11,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:21:11,581 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:21:11,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:21:11,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1335597358, now seen corresponding path program 1 times [2020-09-21 10:21:11,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:21:11,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172254286] [2020-09-21 10:21:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:21:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:11,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:11,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:21:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:11,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:11,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:21:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:11,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:12,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:21:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 10:21:12,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172254286] [2020-09-21 10:21:12,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:21:12,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-21 10:21:12,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865849724] [2020-09-21 10:21:12,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-21 10:21:12,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:21:12,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-21 10:21:12,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-09-21 10:21:12,071 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 22 states. [2020-09-21 10:21:13,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:21:13,359 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-09-21 10:21:13,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 10:21:13,360 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2020-09-21 10:21:13,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:21:13,366 INFO L225 Difference]: With dead ends: 65 [2020-09-21 10:21:13,366 INFO L226 Difference]: Without dead ends: 58 [2020-09-21 10:21:13,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2020-09-21 10:21:13,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-21 10:21:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-09-21 10:21:13,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 10:21:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-09-21 10:21:13,382 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 45 [2020-09-21 10:21:13,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:21:13,382 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-09-21 10:21:13,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-21 10:21:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-09-21 10:21:13,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-21 10:21:13,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:21:13,384 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:21:13,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:21:13,385 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:21:13,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:21:13,385 INFO L82 PathProgramCache]: Analyzing trace with hash 526250732, now seen corresponding path program 1 times [2020-09-21 10:21:13,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:21:13,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431908155] [2020-09-21 10:21:13,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:21:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:13,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:13,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:21:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:13,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:13,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:21:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:13,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:13,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:21:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 10:21:13,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431908155] [2020-09-21 10:21:13,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:21:13,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 10:21:13,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997708306] [2020-09-21 10:21:13,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 10:21:13,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:21:13,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 10:21:13,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-09-21 10:21:13,750 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 16 states. [2020-09-21 10:21:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:21:14,531 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-09-21 10:21:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:21:14,532 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-09-21 10:21:14,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:21:14,534 INFO L225 Difference]: With dead ends: 59 [2020-09-21 10:21:14,534 INFO L226 Difference]: Without dead ends: 56 [2020-09-21 10:21:14,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2020-09-21 10:21:14,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-21 10:21:14,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-09-21 10:21:14,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 10:21:14,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-09-21 10:21:14,545 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 45 [2020-09-21 10:21:14,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:21:14,545 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-09-21 10:21:14,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-21 10:21:14,545 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-09-21 10:21:14,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 10:21:14,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:21:14,547 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:21:14,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:21:14,547 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:21:14,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:21:14,548 INFO L82 PathProgramCache]: Analyzing trace with hash -2119488644, now seen corresponding path program 1 times [2020-09-21 10:21:14,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:21:14,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090645822] [2020-09-21 10:21:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:21:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:14,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:14,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:21:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:14,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:14,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:21:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:14,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:14,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:21:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:21:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:14,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:21:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:15,020 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:21:15,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090645822] [2020-09-21 10:21:15,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:21:15,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-21 10:21:15,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974630317] [2020-09-21 10:21:15,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-21 10:21:15,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:21:15,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-21 10:21:15,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-09-21 10:21:15,025 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 22 states. [2020-09-21 10:21:16,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:21:16,154 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-09-21 10:21:16,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-21 10:21:16,155 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 57 [2020-09-21 10:21:16,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:21:16,156 INFO L225 Difference]: With dead ends: 64 [2020-09-21 10:21:16,157 INFO L226 Difference]: Without dead ends: 58 [2020-09-21 10:21:16,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2020-09-21 10:21:16,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-21 10:21:16,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-09-21 10:21:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-21 10:21:16,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-09-21 10:21:16,169 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 57 [2020-09-21 10:21:16,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:21:16,170 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-09-21 10:21:16,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-21 10:21:16,170 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-09-21 10:21:16,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 10:21:16,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:21:16,171 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:21:16,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:21:16,172 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:21:16,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:21:16,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1366132026, now seen corresponding path program 1 times [2020-09-21 10:21:16,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:21:16,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760942616] [2020-09-21 10:21:16,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:21:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:16,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:16,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:21:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:16,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:16,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:21:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:16,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:16,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:21:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:16,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:21:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:16,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:21:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:21:16,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760942616] [2020-09-21 10:21:16,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:21:16,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-21 10:21:16,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258133789] [2020-09-21 10:21:16,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-21 10:21:16,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:21:16,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-21 10:21:16,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2020-09-21 10:21:16,715 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 23 states. [2020-09-21 10:21:17,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:21:17,760 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-09-21 10:21:17,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 10:21:17,760 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 57 [2020-09-21 10:21:17,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:21:17,762 INFO L225 Difference]: With dead ends: 63 [2020-09-21 10:21:17,762 INFO L226 Difference]: Without dead ends: 49 [2020-09-21 10:21:17,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2020-09-21 10:21:17,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-21 10:21:17,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-09-21 10:21:17,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-21 10:21:17,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-09-21 10:21:17,771 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 57 [2020-09-21 10:21:17,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:21:17,772 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-09-21 10:21:17,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-21 10:21:17,772 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-09-21 10:21:17,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 10:21:17,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:21:17,774 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:21:17,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:21:17,774 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:21:17,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:21:17,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1588672638, now seen corresponding path program 1 times [2020-09-21 10:21:17,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:21:17,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855356711] [2020-09-21 10:21:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:21:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:17,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:17,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:21:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:18,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:18,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:21:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:18,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:18,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:21:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:18,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:21:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:18,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:21:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:18,169 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-21 10:21:18,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855356711] [2020-09-21 10:21:18,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:21:18,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-21 10:21:18,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100372528] [2020-09-21 10:21:18,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-21 10:21:18,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:21:18,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-21 10:21:18,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:21:18,172 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 18 states. [2020-09-21 10:21:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:21:19,051 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-09-21 10:21:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 10:21:19,054 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-09-21 10:21:19,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:21:19,055 INFO L225 Difference]: With dead ends: 60 [2020-09-21 10:21:19,055 INFO L226 Difference]: Without dead ends: 52 [2020-09-21 10:21:19,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2020-09-21 10:21:19,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-21 10:21:19,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-09-21 10:21:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-21 10:21:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-09-21 10:21:19,065 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 57 [2020-09-21 10:21:19,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:21:19,065 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-09-21 10:21:19,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-21 10:21:19,066 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-09-21 10:21:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 10:21:19,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:21:19,067 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:21:19,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:21:19,067 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:21:19,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:21:19,068 INFO L82 PathProgramCache]: Analyzing trace with hash 779326012, now seen corresponding path program 1 times [2020-09-21 10:21:19,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:21:19,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215974318] [2020-09-21 10:21:19,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:21:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:19,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:19,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:21:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:19,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:19,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:21:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:19,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:19,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:21:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:19,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:21:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:19,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:21:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-21 10:21:19,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215974318] [2020-09-21 10:21:19,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:21:19,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 10:21:19,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753201247] [2020-09-21 10:21:19,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:21:19,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:21:19,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:21:19,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:21:19,253 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 10 states. [2020-09-21 10:21:19,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:21:19,667 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-21 10:21:19,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:21:19,668 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-09-21 10:21:19,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:21:19,669 INFO L225 Difference]: With dead ends: 47 [2020-09-21 10:21:19,669 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 10:21:19,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:21:19,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 10:21:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 10:21:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 10:21:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 10:21:19,671 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-09-21 10:21:19,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:21:19,671 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 10:21:19,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:21:19,671 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 10:21:19,671 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 10:21:19,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:21:19,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 10:21:20,267 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 21 [2020-09-21 10:21:20,930 INFO L268 CegarLoopResult]: For program point my_mallocFINAL(lines 878 880) no Hoare annotation was computed. [2020-09-21 10:21:20,930 INFO L264 CegarLoopResult]: At program point L879(line 879) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= my_malloc_~size 8)) (not (= |my_malloc_#in~size| 8))) [2020-09-21 10:21:20,930 INFO L268 CegarLoopResult]: For program point L879-1(line 879) no Hoare annotation was computed. [2020-09-21 10:21:20,930 INFO L264 CegarLoopResult]: At program point my_mallocENTRY(lines 878 880) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|)) (not (= |my_malloc_#in~size| 8))) [2020-09-21 10:21:20,930 INFO L268 CegarLoopResult]: For program point my_mallocEXIT(lines 878 880) no Hoare annotation was computed. [2020-09-21 10:21:20,931 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 10:21:20,931 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= |~#head~0.base| |old(~#head~0.base)|) (= |old(#length)| |#length|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |~#head~0.offset| |old(~#head~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= ~elem~0.offset |old(~elem~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~elem~0.base |old(~elem~0.base)|) (= |old(#valid)| |#valid|)) [2020-09-21 10:21:20,931 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 10:21:20,931 INFO L268 CegarLoopResult]: For program point L896(lines 896 897) no Hoare annotation was computed. [2020-09-21 10:21:20,931 INFO L268 CegarLoopResult]: For program point L896-2(lines 895 898) no Hoare annotation was computed. [2020-09-21 10:21:20,931 INFO L268 CegarLoopResult]: For program point list_delEXIT(lines 895 898) no Hoare annotation was computed. [2020-09-21 10:21:20,932 INFO L264 CegarLoopResult]: At program point list_delENTRY(lines 895 898) the Hoare annotation is: (and (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)) [2020-09-21 10:21:20,932 INFO L264 CegarLoopResult]: At program point list_addENTRY(lines 889 893) the Hoare annotation is: (let ((.cse0 (and (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)))) (and (or (not (<= 1 ~guard_malloc_counter~0.offset)) (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)) .cse0) (or (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) .cse0))) [2020-09-21 10:21:20,932 INFO L268 CegarLoopResult]: For program point L891(lines 891 892) no Hoare annotation was computed. [2020-09-21 10:21:20,932 INFO L268 CegarLoopResult]: For program point L890(line 890) no Hoare annotation was computed. [2020-09-21 10:21:20,932 INFO L268 CegarLoopResult]: For program point L891-2(lines 889 893) no Hoare annotation was computed. [2020-09-21 10:21:20,933 INFO L264 CegarLoopResult]: At program point L890-2(line 890) the Hoare annotation is: (and (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) (or (not (<= 1 ~guard_malloc_counter~0.offset)) (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)))) [2020-09-21 10:21:20,933 INFO L268 CegarLoopResult]: For program point L890-3(line 890) no Hoare annotation was computed. [2020-09-21 10:21:20,933 INFO L268 CegarLoopResult]: For program point list_addEXIT(lines 889 893) no Hoare annotation was computed. [2020-09-21 10:21:20,933 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-21 10:21:20,933 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-09-21 10:21:20,933 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-09-21 10:21:20,933 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-09-21 10:21:20,934 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 10:21:20,934 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~elem~0.offset 0) (<= 0 ~guard_malloc_counter~0.offset)) [2020-09-21 10:21:20,934 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 10:21:20,934 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 10:21:20,934 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 902 917) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-09-21 10:21:20,934 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 902 917) no Hoare annotation was computed. [2020-09-21 10:21:20,935 INFO L264 CegarLoopResult]: At program point L909(line 909) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset))) (or (and .cse0 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (and .cse0 (<= 2 main_~dev2~0.offset) (= ~elem~0.offset 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)))) [2020-09-21 10:21:20,935 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 902 917) no Hoare annotation was computed. [2020-09-21 10:21:20,935 INFO L264 CegarLoopResult]: At program point L908(line 908) the Hoare annotation is: (let ((.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse3 (<= 2 main_~dev2~0.offset))) (or (and .cse0 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset) .cse1 .cse2) (and .cse0 .cse3 .cse1 (= main_~dev2~0.base ~elem~0.base) (= main_~dev2~0.offset ~elem~0.offset) .cse2) (and .cse0 .cse3 (= ~elem~0.offset 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)))) [2020-09-21 10:21:20,935 INFO L264 CegarLoopResult]: At program point L907(line 907) the Hoare annotation is: (or (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-09-21 10:21:20,935 INFO L268 CegarLoopResult]: For program point L906(lines 906 915) no Hoare annotation was computed. [2020-09-21 10:21:20,936 INFO L264 CegarLoopResult]: At program point L907-1(line 907) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) (or (and .cse0 (<= 1 main_~dev1~0.offset) .cse1 (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset) .cse2) (and .cse0 (<= 2 main_~dev2~0.offset) .cse1 (= main_~dev2~0.base ~elem~0.base) (= main_~dev2~0.offset ~elem~0.offset) .cse2) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)))) [2020-09-21 10:21:20,936 INFO L264 CegarLoopResult]: At program point L905(line 905) the Hoare annotation is: (or (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)) (and (= main_~dev1~0.base 0) (= main_~dev1~0.offset 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-09-21 10:21:20,936 INFO L268 CegarLoopResult]: For program point L906-1(lines 906 915) no Hoare annotation was computed. [2020-09-21 10:21:20,936 INFO L264 CegarLoopResult]: At program point L904(line 904) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-09-21 10:21:20,936 INFO L268 CegarLoopResult]: For program point L905-1(line 905) no Hoare annotation was computed. [2020-09-21 10:21:20,936 INFO L268 CegarLoopResult]: For program point L904-1(line 904) no Hoare annotation was computed. [2020-09-21 10:21:20,937 INFO L264 CegarLoopResult]: At program point __getMemoryENTRY(lines 869 876) the Hoare annotation is: (or (not (= |__getMemory_#in~size| 8)) (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|)) (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-09-21 10:21:20,937 INFO L268 CegarLoopResult]: For program point __getMemoryEXIT(lines 869 876) no Hoare annotation was computed. [2020-09-21 10:21:20,937 INFO L268 CegarLoopResult]: For program point __getMemoryFINAL(lines 869 876) no Hoare annotation was computed. [2020-09-21 10:21:20,937 INFO L268 CegarLoopResult]: For program point L873(lines 873 874) no Hoare annotation was computed. [2020-09-21 10:21:20,937 INFO L268 CegarLoopResult]: For program point L871(line 871) no Hoare annotation was computed. [2020-09-21 10:21:20,937 INFO L264 CegarLoopResult]: At program point L871-2(line 871) the Hoare annotation is: (or (not (= |__getMemory_#in~size| 8)) (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-09-21 10:21:20,937 INFO L268 CegarLoopResult]: For program point L871-3(line 871) no Hoare annotation was computed. [2020-09-21 10:21:20,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:21:20 BoogieIcfgContainer [2020-09-21 10:21:20,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:21:20,945 INFO L168 Benchmark]: Toolchain (without parser) took 14536.08 ms. Allocated memory was 138.9 MB in the beginning and 364.9 MB in the end (delta: 226.0 MB). Free memory was 100.7 MB in the beginning and 194.0 MB in the end (delta: -93.3 MB). Peak memory consumption was 240.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:21:20,946 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-21 10:21:20,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.70 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.1 MB in the beginning and 165.9 MB in the end (delta: -65.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:21:20,948 INFO L168 Benchmark]: Boogie Preprocessor took 120.53 ms. Allocated memory is still 201.3 MB. Free memory was 165.9 MB in the beginning and 163.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:21:20,949 INFO L168 Benchmark]: RCFGBuilder took 699.99 ms. Allocated memory is still 201.3 MB. Free memory was 163.3 MB in the beginning and 117.1 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:21:20,950 INFO L168 Benchmark]: TraceAbstraction took 13046.10 ms. Allocated memory was 201.3 MB in the beginning and 364.9 MB in the end (delta: 163.6 MB). Free memory was 116.5 MB in the beginning and 194.0 MB in the end (delta: -77.5 MB). Peak memory consumption was 193.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:21:20,953 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 660.70 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.1 MB in the beginning and 165.9 MB in the end (delta: -65.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.53 ms. Allocated memory is still 201.3 MB. Free memory was 165.9 MB in the beginning and 163.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 699.99 ms. Allocated memory is still 201.3 MB. Free memory was 163.3 MB in the beginning and 117.1 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13046.10 ms. Allocated memory was 201.3 MB in the beginning and 364.9 MB in the end (delta: 163.6 MB). Free memory was 116.5 MB in the beginning and 194.0 MB in the end (delta: -77.5 MB). Peak memory consumption was 193.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.6s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 350 SDtfs, 471 SDslu, 901 SDs, 0 SdLazy, 4518 SolverSat, 437 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 73 PreInvPairs, 84 NumberOfFragments, 426 HoareAnnotationTreeSize, 73 FomulaSimplifications, 1366 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 18 FomulaSimplificationsInter, 996 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 445 NumberOfCodeBlocks, 445 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 435 ConstructedInterpolants, 0 QuantifiedInterpolants, 89234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 90/143 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...