/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:09:31,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:09:31,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:09:31,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:09:31,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:09:31,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:09:31,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:09:31,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:09:31,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:09:31,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:09:31,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:09:31,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:09:31,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:09:31,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:09:31,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:09:31,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:09:31,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:09:31,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:09:31,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:09:31,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:09:31,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:09:31,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:09:31,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:09:31,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:09:31,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:09:31,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:09:31,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:09:31,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:09:31,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:09:31,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:09:31,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:09:31,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:09:31,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:09:31,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:09:31,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:09:31,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:09:31,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:09:31,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:09:31,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:09:31,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:09:31,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:09:31,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 18:09:31,176 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:09:31,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:09:31,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:09:31,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:09:31,179 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:09:31,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:09:31,179 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:09:31,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:09:31,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:09:31,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:09:31,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:09:31,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:09:31,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:09:31,180 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:09:31,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:09:31,181 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:09:31,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:09:31,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:09:31,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:09:31,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:09:31,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:09:31,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:09:31,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:09:31,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:09:31,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:09:31,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:09:31,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:09:31,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:09:31,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:09:31,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:09:31,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:09:31,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:09:31,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:09:31,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:09:31,526 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:09:31,527 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-08-21 18:09:31,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efc82c85d/f21846b9ee10458885b1de3cfbf7b90f/FLAGf6631acb5 [2020-08-21 18:09:32,193 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:09:32,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-08-21 18:09:32,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efc82c85d/f21846b9ee10458885b1de3cfbf7b90f/FLAGf6631acb5 [2020-08-21 18:09:32,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efc82c85d/f21846b9ee10458885b1de3cfbf7b90f [2020-08-21 18:09:32,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:09:32,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:09:32,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:09:32,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:09:32,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:09:32,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:09:32" (1/1) ... [2020-08-21 18:09:32,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b481d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:32, skipping insertion in model container [2020-08-21 18:09:32,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:09:32" (1/1) ... [2020-08-21 18:09:32,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:09:32,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:09:32,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:09:32,929 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:09:33,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:09:33,073 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:09:33,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:33 WrapperNode [2020-08-21 18:09:33,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:09:33,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:09:33,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:09:33,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:09:33,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:33" (1/1) ... [2020-08-21 18:09:33,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:33" (1/1) ... [2020-08-21 18:09:33,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:33" (1/1) ... [2020-08-21 18:09:33,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:33" (1/1) ... [2020-08-21 18:09:33,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:33" (1/1) ... [2020-08-21 18:09:33,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:33" (1/1) ... [2020-08-21 18:09:33,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:33" (1/1) ... [2020-08-21 18:09:33,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:09:33,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:09:33,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:09:33,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:09:33,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:09:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:09:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:09:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-21 18:09:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-08-21 18:09:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-08-21 18:09:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-21 18:09:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-08-21 18:09:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:09:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:09:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-21 18:09:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-08-21 18:09:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-08-21 18:09:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-08-21 18:09:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-08-21 18:09:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-08-21 18:09:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-08-21 18:09:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-08-21 18:09:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-08-21 18:09:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-08-21 18:09:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-08-21 18:09:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-08-21 18:09:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-08-21 18:09:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-08-21 18:09:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-08-21 18:09:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-08-21 18:09:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-08-21 18:09:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-08-21 18:09:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-08-21 18:09:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-08-21 18:09:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-08-21 18:09:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-08-21 18:09:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-08-21 18:09:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-08-21 18:09:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-08-21 18:09:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-08-21 18:09:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-08-21 18:09:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-08-21 18:09:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-08-21 18:09:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-08-21 18:09:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-08-21 18:09:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-08-21 18:09:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-08-21 18:09:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-08-21 18:09:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-08-21 18:09:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-08-21 18:09:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-08-21 18:09:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-08-21 18:09:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-08-21 18:09:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:09:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-08-21 18:09:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-08-21 18:09:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-08-21 18:09:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-08-21 18:09:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-08-21 18:09:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-08-21 18:09:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-08-21 18:09:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-08-21 18:09:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-08-21 18:09:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-08-21 18:09:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-08-21 18:09:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-08-21 18:09:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-08-21 18:09:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-08-21 18:09:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-08-21 18:09:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-08-21 18:09:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-08-21 18:09:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-08-21 18:09:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-08-21 18:09:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-08-21 18:09:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-08-21 18:09:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-08-21 18:09:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-08-21 18:09:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-08-21 18:09:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-08-21 18:09:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-08-21 18:09:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-08-21 18:09:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-08-21 18:09:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-08-21 18:09:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-08-21 18:09:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-08-21 18:09:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-08-21 18:09:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-08-21 18:09:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-08-21 18:09:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-08-21 18:09:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-08-21 18:09:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-08-21 18:09:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-08-21 18:09:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-08-21 18:09:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-08-21 18:09:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-08-21 18:09:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-08-21 18:09:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-08-21 18:09:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-08-21 18:09:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-08-21 18:09:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-08-21 18:09:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-08-21 18:09:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-08-21 18:09:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-08-21 18:09:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-08-21 18:09:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-08-21 18:09:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-08-21 18:09:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-08-21 18:09:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-08-21 18:09:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-08-21 18:09:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-08-21 18:09:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-08-21 18:09:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-08-21 18:09:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-08-21 18:09:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-08-21 18:09:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-08-21 18:09:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-08-21 18:09:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:09:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 18:09:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 18:09:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:09:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 18:09:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-08-21 18:09:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 18:09:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-08-21 18:09:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-08-21 18:09:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-08-21 18:09:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-08-21 18:09:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-08-21 18:09:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-08-21 18:09:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-08-21 18:09:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-08-21 18:09:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-08-21 18:09:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-08-21 18:09:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-08-21 18:09:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:09:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-08-21 18:09:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-08-21 18:09:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-21 18:09:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-08-21 18:09:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:09:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:09:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:09:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 18:09:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:09:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:09:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:09:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:09:33,776 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:09:33,776 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 18:09:33,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:09:33 BoogieIcfgContainer [2020-08-21 18:09:33,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:09:33,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:09:33,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:09:33,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:09:33,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:09:32" (1/3) ... [2020-08-21 18:09:33,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6350cddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:09:33, skipping insertion in model container [2020-08-21 18:09:33,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:33" (2/3) ... [2020-08-21 18:09:33,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6350cddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:09:33, skipping insertion in model container [2020-08-21 18:09:33,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:09:33" (3/3) ... [2020-08-21 18:09:33,801 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-08-21 18:09:33,812 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:09:33,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:09:33,837 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:09:33,866 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:09:33,866 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:09:33,866 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:09:33,867 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:09:33,867 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:09:33,867 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:09:33,867 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:09:33,868 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:09:33,890 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-21 18:09:33,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 18:09:33,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:33,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:33,899 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:33,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:33,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1135050545, now seen corresponding path program 1 times [2020-08-21 18:09:33,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:33,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054048617] [2020-08-21 18:09:33,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:34,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:34,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:09:34,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054048617] [2020-08-21 18:09:34,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:34,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 18:09:34,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803693761] [2020-08-21 18:09:34,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:09:34,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:34,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:09:34,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:09:34,250 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 7 states. [2020-08-21 18:09:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:34,766 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2020-08-21 18:09:34,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:09:34,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-08-21 18:09:34,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:34,780 INFO L225 Difference]: With dead ends: 88 [2020-08-21 18:09:34,781 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 18:09:34,785 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 [2020-08-21 18:09:34,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 18:09:34,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-08-21 18:09:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-21 18:09:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-08-21 18:09:34,841 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 13 [2020-08-21 18:09:34,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:34,842 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-08-21 18:09:34,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:09:34,842 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-08-21 18:09:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 18:09:34,845 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:34,845 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:34,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:09:34,846 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:34,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:34,847 INFO L82 PathProgramCache]: Analyzing trace with hash -925661111, now seen corresponding path program 1 times [2020-08-21 18:09:34,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:34,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739643435] [2020-08-21 18:09:34,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:35,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:35,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:09:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:35,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:35,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:35,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 18:09:35,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739643435] [2020-08-21 18:09:35,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:35,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:09:35,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000427902] [2020-08-21 18:09:35,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:09:35,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:35,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:09:35,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:09:35,246 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2020-08-21 18:09:35,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:35,462 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-08-21 18:09:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:09:35,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-08-21 18:09:35,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:35,465 INFO L225 Difference]: With dead ends: 67 [2020-08-21 18:09:35,465 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 18:09:35,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:09:35,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 18:09:35,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-21 18:09:35,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-21 18:09:35,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-08-21 18:09:35,481 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 38 [2020-08-21 18:09:35,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:35,481 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-08-21 18:09:35,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:09:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-08-21 18:09:35,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 18:09:35,483 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:35,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:35,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:09:35,484 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:35,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:35,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1219064118, now seen corresponding path program 1 times [2020-08-21 18:09:35,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:35,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958647817] [2020-08-21 18:09:35,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:35,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:35,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:09:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:35,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:35,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:35,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:35,778 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 18:09:35,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958647817] [2020-08-21 18:09:35,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:09:35,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 18:09:35,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177494032] [2020-08-21 18:09:35,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:09:35,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:35,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:09:35,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:09:35,783 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 9 states. [2020-08-21 18:09:36,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:36,004 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-08-21 18:09:36,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:09:36,004 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-08-21 18:09:36,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:36,006 INFO L225 Difference]: With dead ends: 69 [2020-08-21 18:09:36,006 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 18:09:36,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:09:36,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 18:09:36,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-08-21 18:09:36,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-21 18:09:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-08-21 18:09:36,025 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 38 [2020-08-21 18:09:36,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:36,025 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-08-21 18:09:36,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:09:36,027 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-08-21 18:09:36,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 18:09:36,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:36,028 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:36,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:09:36,029 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:36,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:36,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1188044311, now seen corresponding path program 1 times [2020-08-21 18:09:36,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:36,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946224693] [2020-08-21 18:09:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:36,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:36,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:09:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:36,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:36,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:36,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 18:09:36,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946224693] [2020-08-21 18:09:36,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:09:36,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 18:09:36,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767849900] [2020-08-21 18:09:36,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 18:09:36,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:36,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 18:09:36,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:09:36,356 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 15 states. [2020-08-21 18:09:37,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:37,181 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2020-08-21 18:09:37,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 18:09:37,182 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-08-21 18:09:37,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:37,183 INFO L225 Difference]: With dead ends: 75 [2020-08-21 18:09:37,184 INFO L226 Difference]: Without dead ends: 62 [2020-08-21 18:09:37,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-08-21 18:09:37,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-08-21 18:09:37,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2020-08-21 18:09:37,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-21 18:09:37,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-08-21 18:09:37,197 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 38 [2020-08-21 18:09:37,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:37,198 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-08-21 18:09:37,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 18:09:37,198 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-08-21 18:09:37,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-21 18:09:37,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:37,200 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:37,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:09:37,200 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:37,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:37,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1335597358, now seen corresponding path program 1 times [2020-08-21 18:09:37,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:37,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795867995] [2020-08-21 18:09:37,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:37,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:37,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:09:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:37,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:37,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:37,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:37,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:09:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 18:09:37,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795867995] [2020-08-21 18:09:37,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:09:37,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 18:09:37,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154101308] [2020-08-21 18:09:37,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 18:09:37,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:37,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 18:09:37,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-08-21 18:09:37,608 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 22 states. [2020-08-21 18:09:38,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:38,715 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-08-21 18:09:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 18:09:38,730 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2020-08-21 18:09:38,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:38,732 INFO L225 Difference]: With dead ends: 65 [2020-08-21 18:09:38,732 INFO L226 Difference]: Without dead ends: 58 [2020-08-21 18:09:38,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 18:09:38,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-21 18:09:38,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-08-21 18:09:38,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 18:09:38,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-08-21 18:09:38,747 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 45 [2020-08-21 18:09:38,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:38,749 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-08-21 18:09:38,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 18:09:38,750 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-08-21 18:09:38,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-21 18:09:38,752 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:38,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:38,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:09:38,754 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:38,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:38,755 INFO L82 PathProgramCache]: Analyzing trace with hash 526250732, now seen corresponding path program 1 times [2020-08-21 18:09:38,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:38,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363998756] [2020-08-21 18:09:38,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:38,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:38,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:09:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:38,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:38,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:38,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:39,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:09:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 18:09:39,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363998756] [2020-08-21 18:09:39,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:09:39,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 18:09:39,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788791518] [2020-08-21 18:09:39,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 18:09:39,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:39,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 18:09:39,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:09:39,047 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 16 states. [2020-08-21 18:09:39,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:39,705 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-08-21 18:09:39,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:09:39,706 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-08-21 18:09:39,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:39,708 INFO L225 Difference]: With dead ends: 59 [2020-08-21 18:09:39,708 INFO L226 Difference]: Without dead ends: 56 [2020-08-21 18:09:39,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2020-08-21 18:09:39,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-21 18:09:39,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-08-21 18:09:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 18:09:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-08-21 18:09:39,719 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 45 [2020-08-21 18:09:39,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:39,720 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-08-21 18:09:39,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 18:09:39,720 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-08-21 18:09:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 18:09:39,721 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:39,721 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:39,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:09:39,722 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:39,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:39,722 INFO L82 PathProgramCache]: Analyzing trace with hash -2119488644, now seen corresponding path program 1 times [2020-08-21 18:09:39,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:39,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22080799] [2020-08-21 18:09:39,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:39,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:39,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:09:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:39,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:39,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:39,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:40,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:09:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:40,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:09:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:40,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:09:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:09:40,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22080799] [2020-08-21 18:09:40,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:09:40,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 18:09:40,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576986104] [2020-08-21 18:09:40,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 18:09:40,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:40,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 18:09:40,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-08-21 18:09:40,127 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 22 states. [2020-08-21 18:09:41,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:41,132 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-08-21 18:09:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 18:09:41,132 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 57 [2020-08-21 18:09:41,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:41,133 INFO L225 Difference]: With dead ends: 64 [2020-08-21 18:09:41,134 INFO L226 Difference]: Without dead ends: 58 [2020-08-21 18:09:41,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 18:09:41,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-21 18:09:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-08-21 18:09:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-21 18:09:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-08-21 18:09:41,146 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 57 [2020-08-21 18:09:41,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:41,146 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-08-21 18:09:41,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 18:09:41,147 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-08-21 18:09:41,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 18:09:41,148 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:41,148 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:41,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:09:41,148 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:41,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:41,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1366132026, now seen corresponding path program 1 times [2020-08-21 18:09:41,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:41,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044108122] [2020-08-21 18:09:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:41,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:41,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:09:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:41,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:41,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:41,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:41,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:09:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:41,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:09:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:41,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:09:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:09:41,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044108122] [2020-08-21 18:09:41,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:09:41,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-21 18:09:41,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098344006] [2020-08-21 18:09:41,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-21 18:09:41,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:41,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-21 18:09:41,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2020-08-21 18:09:41,557 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 23 states. [2020-08-21 18:09:42,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:42,580 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-08-21 18:09:42,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 18:09:42,580 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 57 [2020-08-21 18:09:42,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:42,582 INFO L225 Difference]: With dead ends: 63 [2020-08-21 18:09:42,582 INFO L226 Difference]: Without dead ends: 49 [2020-08-21 18:09:42,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2020-08-21 18:09:42,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-08-21 18:09:42,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-08-21 18:09:42,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-21 18:09:42,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-08-21 18:09:42,590 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 57 [2020-08-21 18:09:42,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:42,591 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-08-21 18:09:42,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-21 18:09:42,591 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-08-21 18:09:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 18:09:42,592 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:42,593 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:42,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:09:42,593 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:42,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:42,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1588672638, now seen corresponding path program 1 times [2020-08-21 18:09:42,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:42,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870779825] [2020-08-21 18:09:42,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:42,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:42,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:09:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:42,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:42,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:42,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:42,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:09:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:42,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:09:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:42,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:09:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-21 18:09:42,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870779825] [2020-08-21 18:09:42,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:09:42,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 18:09:42,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303809136] [2020-08-21 18:09:42,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 18:09:42,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:42,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 18:09:42,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:09:42,899 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 18 states. [2020-08-21 18:09:43,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:43,651 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-08-21 18:09:43,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 18:09:43,651 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-08-21 18:09:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:43,653 INFO L225 Difference]: With dead ends: 60 [2020-08-21 18:09:43,653 INFO L226 Difference]: Without dead ends: 52 [2020-08-21 18:09:43,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 18:09:43,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-21 18:09:43,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-08-21 18:09:43,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-21 18:09:43,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-08-21 18:09:43,670 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 57 [2020-08-21 18:09:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:43,673 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-08-21 18:09:43,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 18:09:43,673 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-08-21 18:09:43,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 18:09:43,674 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:43,675 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:43,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:09:43,675 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:43,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:43,676 INFO L82 PathProgramCache]: Analyzing trace with hash 779326012, now seen corresponding path program 1 times [2020-08-21 18:09:43,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:43,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288176118] [2020-08-21 18:09:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:43,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:43,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:09:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:43,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:43,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:43,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:43,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:09:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:43,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:09:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:43,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:09:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-21 18:09:43,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288176118] [2020-08-21 18:09:43,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:09:43,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 18:09:43,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923018826] [2020-08-21 18:09:43,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:09:43,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:43,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:09:43,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:09:43,869 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 10 states. [2020-08-21 18:09:44,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:44,141 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-08-21 18:09:44,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:09:44,143 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-08-21 18:09:44,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:44,144 INFO L225 Difference]: With dead ends: 47 [2020-08-21 18:09:44,144 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 18:09:44,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:09:44,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 18:09:44,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 18:09:44,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 18:09:44,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 18:09:44,147 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-08-21 18:09:44,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:44,147 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 18:09:44,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:09:44,148 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 18:09:44,148 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 18:09:44,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:09:44,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 18:09:45,049 INFO L268 CegarLoopResult]: For program point my_mallocFINAL(lines 878 880) no Hoare annotation was computed. [2020-08-21 18:09:45,049 INFO L264 CegarLoopResult]: At program point L879(line 879) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= my_malloc_~size 8)) (not (= |my_malloc_#in~size| 8))) [2020-08-21 18:09:45,049 INFO L268 CegarLoopResult]: For program point L879-1(line 879) no Hoare annotation was computed. [2020-08-21 18:09:45,050 INFO L264 CegarLoopResult]: At program point my_mallocENTRY(lines 878 880) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|)) (not (= |my_malloc_#in~size| 8))) [2020-08-21 18:09:45,050 INFO L268 CegarLoopResult]: For program point my_mallocEXIT(lines 878 880) no Hoare annotation was computed. [2020-08-21 18:09:45,050 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 18:09:45,050 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= |~#head~0.base| |old(~#head~0.base)|) (= |old(#length)| |#length|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |~#head~0.offset| |old(~#head~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= ~elem~0.offset |old(~elem~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~elem~0.base |old(~elem~0.base)|) (= |old(#valid)| |#valid|)) [2020-08-21 18:09:45,050 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 18:09:45,051 INFO L268 CegarLoopResult]: For program point L896(lines 896 897) no Hoare annotation was computed. [2020-08-21 18:09:45,051 INFO L268 CegarLoopResult]: For program point L896-2(lines 895 898) no Hoare annotation was computed. [2020-08-21 18:09:45,051 INFO L268 CegarLoopResult]: For program point list_delEXIT(lines 895 898) no Hoare annotation was computed. [2020-08-21 18:09:45,051 INFO L264 CegarLoopResult]: At program point list_delENTRY(lines 895 898) the Hoare annotation is: (and (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)) [2020-08-21 18:09:45,051 INFO L264 CegarLoopResult]: At program point list_addENTRY(lines 889 893) the Hoare annotation is: (let ((.cse0 (and (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)))) (and (or (not (<= 1 ~guard_malloc_counter~0.offset)) (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)) .cse0) (or (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) .cse0))) [2020-08-21 18:09:45,051 INFO L268 CegarLoopResult]: For program point L891(lines 891 892) no Hoare annotation was computed. [2020-08-21 18:09:45,051 INFO L268 CegarLoopResult]: For program point L890(line 890) no Hoare annotation was computed. [2020-08-21 18:09:45,052 INFO L268 CegarLoopResult]: For program point L891-2(lines 889 893) no Hoare annotation was computed. [2020-08-21 18:09:45,052 INFO L264 CegarLoopResult]: At program point L890-2(line 890) the Hoare annotation is: (and (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) (or (not (<= 1 ~guard_malloc_counter~0.offset)) (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)))) [2020-08-21 18:09:45,052 INFO L268 CegarLoopResult]: For program point L890-3(line 890) no Hoare annotation was computed. [2020-08-21 18:09:45,052 INFO L268 CegarLoopResult]: For program point list_addEXIT(lines 889 893) no Hoare annotation was computed. [2020-08-21 18:09:45,052 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-08-21 18:09:45,052 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-08-21 18:09:45,052 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-08-21 18:09:45,053 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-08-21 18:09:45,053 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 18:09:45,053 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~elem~0.offset 0) (<= 0 ~guard_malloc_counter~0.offset)) [2020-08-21 18:09:45,053 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 18:09:45,053 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 18:09:45,053 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 902 917) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-08-21 18:09:45,053 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 902 917) no Hoare annotation was computed. [2020-08-21 18:09:45,054 INFO L264 CegarLoopResult]: At program point L909(line 909) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset))) (or (and .cse0 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (and .cse0 (<= 2 main_~dev2~0.offset) (= ~elem~0.offset 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)))) [2020-08-21 18:09:45,054 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 902 917) no Hoare annotation was computed. [2020-08-21 18:09:45,054 INFO L264 CegarLoopResult]: At program point L908(line 908) the Hoare annotation is: (let ((.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse3 (<= 2 main_~dev2~0.offset))) (or (and .cse0 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset) .cse1 .cse2) (and .cse0 .cse3 .cse1 (= main_~dev2~0.base ~elem~0.base) (= main_~dev2~0.offset ~elem~0.offset) .cse2) (and .cse0 .cse3 (= ~elem~0.offset 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)))) [2020-08-21 18:09:45,054 INFO L264 CegarLoopResult]: At program point L907(line 907) the Hoare annotation is: (or (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-08-21 18:09:45,054 INFO L268 CegarLoopResult]: For program point L906(lines 906 915) no Hoare annotation was computed. [2020-08-21 18:09:45,054 INFO L264 CegarLoopResult]: At program point L907-1(line 907) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) (or (and .cse0 (<= 1 main_~dev1~0.offset) .cse1 (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset) .cse2) (and .cse0 (<= 2 main_~dev2~0.offset) .cse1 (= main_~dev2~0.base ~elem~0.base) (= main_~dev2~0.offset ~elem~0.offset) .cse2) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)))) [2020-08-21 18:09:45,055 INFO L264 CegarLoopResult]: At program point L905(line 905) the Hoare annotation is: (or (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)) (and (= main_~dev1~0.base 0) (= main_~dev1~0.offset 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-08-21 18:09:45,055 INFO L268 CegarLoopResult]: For program point L906-1(lines 906 915) no Hoare annotation was computed. [2020-08-21 18:09:45,055 INFO L264 CegarLoopResult]: At program point L904(line 904) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-08-21 18:09:45,055 INFO L268 CegarLoopResult]: For program point L905-1(line 905) no Hoare annotation was computed. [2020-08-21 18:09:45,055 INFO L268 CegarLoopResult]: For program point L904-1(line 904) no Hoare annotation was computed. [2020-08-21 18:09:45,055 INFO L264 CegarLoopResult]: At program point __getMemoryENTRY(lines 869 876) the Hoare annotation is: (or (not (= |__getMemory_#in~size| 8)) (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|)) (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-08-21 18:09:45,055 INFO L268 CegarLoopResult]: For program point __getMemoryEXIT(lines 869 876) no Hoare annotation was computed. [2020-08-21 18:09:45,056 INFO L268 CegarLoopResult]: For program point __getMemoryFINAL(lines 869 876) no Hoare annotation was computed. [2020-08-21 18:09:45,056 INFO L268 CegarLoopResult]: For program point L873(lines 873 874) no Hoare annotation was computed. [2020-08-21 18:09:45,056 INFO L268 CegarLoopResult]: For program point L871(line 871) no Hoare annotation was computed. [2020-08-21 18:09:45,056 INFO L264 CegarLoopResult]: At program point L871-2(line 871) the Hoare annotation is: (or (not (= |__getMemory_#in~size| 8)) (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-08-21 18:09:45,056 INFO L268 CegarLoopResult]: For program point L871-3(line 871) no Hoare annotation was computed. [2020-08-21 18:09:45,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:09:45 BoogieIcfgContainer [2020-08-21 18:09:45,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:09:45,063 INFO L168 Benchmark]: Toolchain (without parser) took 12601.14 ms. Allocated memory was 139.5 MB in the beginning and 348.7 MB in the end (delta: 209.2 MB). Free memory was 101.1 MB in the beginning and 99.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 211.1 MB. Max. memory is 7.1 GB. [2020-08-21 18:09:45,064 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:09:45,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.95 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 167.1 MB in the end (delta: -66.2 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:09:45,066 INFO L168 Benchmark]: Boogie Preprocessor took 56.89 ms. Allocated memory is still 202.4 MB. Free memory was 167.1 MB in the beginning and 164.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-08-21 18:09:45,066 INFO L168 Benchmark]: RCFGBuilder took 658.04 ms. Allocated memory is still 202.4 MB. Free memory was 164.2 MB in the beginning and 118.3 MB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:09:45,067 INFO L168 Benchmark]: TraceAbstraction took 11268.90 ms. Allocated memory was 202.4 MB in the beginning and 348.7 MB in the end (delta: 146.3 MB). Free memory was 117.7 MB in the beginning and 99.2 MB in the end (delta: 18.4 MB). Peak memory consumption was 164.7 MB. Max. memory is 7.1 GB. [2020-08-21 18:09:45,071 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 610.95 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 167.1 MB in the end (delta: -66.2 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.89 ms. Allocated memory is still 202.4 MB. Free memory was 167.1 MB in the beginning and 164.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 658.04 ms. Allocated memory is still 202.4 MB. Free memory was 164.2 MB in the beginning and 118.3 MB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11268.90 ms. Allocated memory was 202.4 MB in the beginning and 348.7 MB in the end (delta: 146.3 MB). Free memory was 117.7 MB in the beginning and 99.2 MB in the end (delta: 18.4 MB). Peak memory consumption was 164.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.2s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 350 SDtfs, 471 SDslu, 901 SDs, 0 SdLazy, 4518 SolverSat, 437 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 73 PreInvPairs, 84 NumberOfFragments, 426 HoareAnnotationTreeSize, 73 FomulaSimplifications, 1366 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 18 FomulaSimplificationsInter, 996 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.8s 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...