/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:50:22,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:50:22,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:50:22,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:50:22,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:50:22,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:50:22,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:50:22,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:50:22,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:50:22,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:50:22,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:50:22,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:50:22,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:50:22,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:50:22,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:50:22,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:50:22,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:50:22,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:50:22,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:50:22,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:50:22,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:50:22,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:50:22,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:50:22,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:50:22,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:50:22,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:50:22,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:50:22,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:50:22,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:50:22,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:50:22,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:50:23,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:50:23,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:50:23,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:50:23,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:50:23,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:50:23,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:50:23,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:50:23,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:50:23,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:50:23,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:50:23,011 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 [2020-08-19 06:50:23,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:50:23,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:50:23,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:50:23,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:50:23,057 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:50:23,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:50:23,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:50:23,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:50:23,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:50:23,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:50:23,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:50:23,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:50:23,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:50:23,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:50:23,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:50:23,061 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:50:23,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:50:23,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:50:23,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:50:23,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:50:23,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:50:23,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:50:23,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:50:23,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:50:23,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:50:23,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:50:23,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:50:23,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:50:23,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:50:23,064 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:50:23,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:50:23,414 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:50:23,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:50:23,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:50:23,419 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:50:23,420 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-19 06:50:23,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/961190284/e1105270a1034153a176525b943d95b8/FLAG21cafcaaf [2020-08-19 06:50:23,970 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:50:23,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-19 06:50:24,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/961190284/e1105270a1034153a176525b943d95b8/FLAG21cafcaaf [2020-08-19 06:50:24,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/961190284/e1105270a1034153a176525b943d95b8 [2020-08-19 06:50:24,325 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:50:24,327 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:50:24,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:50:24,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:50:24,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:50:24,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:50:24" (1/1) ... [2020-08-19 06:50:24,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c790c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:50:24, skipping insertion in model container [2020-08-19 06:50:24,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:50:24" (1/1) ... [2020-08-19 06:50:24,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:50:24,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:50:24,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:50:24,925 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:50:24,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:50:25,052 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:50:25,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:50:25 WrapperNode [2020-08-19 06:50:25,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:50:25,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:50:25,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:50:25,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:50:25,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:50:25" (1/1) ... [2020-08-19 06:50:25,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:50:25" (1/1) ... [2020-08-19 06:50:25,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:50:25" (1/1) ... [2020-08-19 06:50:25,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:50:25" (1/1) ... [2020-08-19 06:50:25,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:50:25" (1/1) ... [2020-08-19 06:50:25,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:50:25" (1/1) ... [2020-08-19 06:50:25,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:50:25" (1/1) ... [2020-08-19 06:50:25,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:50:25,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:50:25,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:50:25,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:50:25,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:50:25" (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 [2020-08-19 06:50:25,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:50:25,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:50:25,206 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:50:25,206 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-19 06:50:25,206 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-19 06:50:25,206 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-19 06:50:25,206 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-19 06:50:25,207 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-19 06:50:25,207 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-19 06:50:25,207 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-19 06:50:25,207 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-19 06:50:25,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-19 06:50:25,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-19 06:50:25,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-19 06:50:25,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-19 06:50:25,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-19 06:50:25,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-19 06:50:25,209 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-19 06:50:25,209 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-19 06:50:25,209 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-19 06:50:25,209 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-19 06:50:25,209 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-19 06:50:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-19 06:50:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-19 06:50:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-19 06:50:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-19 06:50:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-19 06:50:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-19 06:50:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-19 06:50:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-19 06:50:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-19 06:50:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-19 06:50:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-19 06:50:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-19 06:50:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-19 06:50:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-19 06:50:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-19 06:50:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-19 06:50:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-19 06:50:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-19 06:50:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-19 06:50:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-19 06:50:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-19 06:50:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-19 06:50:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-19 06:50:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-19 06:50:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-19 06:50:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-19 06:50:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-19 06:50:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-19 06:50:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-19 06:50:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-19 06:50:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-19 06:50:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:50:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 06:50:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-19 06:50:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:50:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-19 06:50:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-19 06:50:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-19 06:50:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-19 06:50:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-19 06:50:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 06:50:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-19 06:50:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-19 06:50:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-19 06:50:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 06:50:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-19 06:50:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-19 06:50:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-19 06:50:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-19 06:50:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-19 06:50:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-19 06:50:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-19 06:50:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-19 06:50:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-19 06:50:25,219 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-19 06:50:25,219 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-19 06:50:25,219 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-19 06:50:25,219 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-19 06:50:25,219 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-19 06:50:25,219 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-19 06:50:25,220 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-19 06:50:25,220 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-19 06:50:25,220 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-19 06:50:25,220 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-19 06:50:25,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-19 06:50:25,220 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-19 06:50:25,220 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-19 06:50:25,221 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-19 06:50:25,221 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-19 06:50:25,221 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-19 06:50:25,221 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-19 06:50:25,221 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-19 06:50:25,221 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-19 06:50:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-19 06:50:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-19 06:50:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-19 06:50:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-19 06:50:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-19 06:50:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-19 06:50:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-19 06:50:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-19 06:50:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-19 06:50:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-19 06:50:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-19 06:50:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:50:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:50:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:50:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:50:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:50:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:50:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:50:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:50:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:50:25,904 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:50:25,905 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-19 06:50:25,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:50:25 BoogieIcfgContainer [2020-08-19 06:50:25,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:50:25,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:50:25,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:50:25,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:50:25,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:50:24" (1/3) ... [2020-08-19 06:50:25,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33155ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:50:25, skipping insertion in model container [2020-08-19 06:50:25,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:50:25" (2/3) ... [2020-08-19 06:50:25,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33155ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:50:25, skipping insertion in model container [2020-08-19 06:50:25,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:50:25" (3/3) ... [2020-08-19 06:50:25,919 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-19 06:50:25,931 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:50:25,939 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-19 06:50:25,954 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-19 06:50:25,981 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:50:25,982 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:50:25,982 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:50:25,982 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:50:25,982 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:50:25,983 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:50:25,983 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:50:25,983 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:50:26,014 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-19 06:50:26,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-19 06:50:26,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:26,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:26,031 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:26,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:26,039 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-08-19 06:50:26,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:26,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128571131] [2020-08-19 06:50:26,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:26,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:26,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128571131] [2020-08-19 06:50:26,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:26,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:50:26,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14408680] [2020-08-19 06:50:26,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:50:26,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:26,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:50:26,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:50:26,283 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-08-19 06:50:26,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:26,568 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-08-19 06:50:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:50:26,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-19 06:50:26,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:26,581 INFO L225 Difference]: With dead ends: 188 [2020-08-19 06:50:26,581 INFO L226 Difference]: Without dead ends: 100 [2020-08-19 06:50:26,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:50:26,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-19 06:50:26,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-08-19 06:50:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-19 06:50:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-19 06:50:26,634 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-08-19 06:50:26,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:26,635 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-19 06:50:26,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:50:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-19 06:50:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 06:50:26,636 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:26,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:26,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:50:26,637 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:26,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:26,637 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-08-19 06:50:26,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:26,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042890266] [2020-08-19 06:50:26,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:26,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:26,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042890266] [2020-08-19 06:50:26,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:26,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:50:26,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664951447] [2020-08-19 06:50:26,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:50:26,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:26,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:50:26,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:50:26,703 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-08-19 06:50:26,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:26,850 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-08-19 06:50:26,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:50:26,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-19 06:50:26,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:26,853 INFO L225 Difference]: With dead ends: 85 [2020-08-19 06:50:26,853 INFO L226 Difference]: Without dead ends: 83 [2020-08-19 06:50:26,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:50:26,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-19 06:50:26,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-19 06:50:26,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-19 06:50:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-08-19 06:50:26,865 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-08-19 06:50:26,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:26,865 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-08-19 06:50:26,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:50:26,865 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-08-19 06:50:26,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 06:50:26,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:26,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:26,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:50:26,867 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:26,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:26,867 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-08-19 06:50:26,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:26,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353431121] [2020-08-19 06:50:26,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:26,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:26,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353431121] [2020-08-19 06:50:26,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:26,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:50:26,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397389203] [2020-08-19 06:50:26,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:50:26,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:26,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:50:26,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:50:26,972 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-08-19 06:50:27,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:27,253 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-08-19 06:50:27,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:50:27,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-19 06:50:27,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:27,257 INFO L225 Difference]: With dead ends: 140 [2020-08-19 06:50:27,257 INFO L226 Difference]: Without dead ends: 138 [2020-08-19 06:50:27,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:50:27,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-19 06:50:27,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-08-19 06:50:27,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-19 06:50:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-19 06:50:27,281 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-08-19 06:50:27,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:27,282 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-19 06:50:27,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:50:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-19 06:50:27,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 06:50:27,286 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:27,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:27,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:50:27,290 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:27,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:27,290 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-08-19 06:50:27,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:27,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754506195] [2020-08-19 06:50:27,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:27,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:27,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754506195] [2020-08-19 06:50:27,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:27,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:50:27,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772062207] [2020-08-19 06:50:27,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:50:27,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:27,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:50:27,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:50:27,442 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-08-19 06:50:27,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:27,646 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-08-19 06:50:27,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:50:27,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-19 06:50:27,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:27,648 INFO L225 Difference]: With dead ends: 85 [2020-08-19 06:50:27,648 INFO L226 Difference]: Without dead ends: 83 [2020-08-19 06:50:27,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:50:27,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-19 06:50:27,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-08-19 06:50:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-19 06:50:27,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-08-19 06:50:27,657 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-08-19 06:50:27,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:27,657 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-08-19 06:50:27,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:50:27,658 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-08-19 06:50:27,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 06:50:27,658 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:27,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:27,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:50:27,659 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:27,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:27,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-08-19 06:50:27,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:27,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282021897] [2020-08-19 06:50:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:27,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:27,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282021897] [2020-08-19 06:50:27,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:27,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:50:27,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627595784] [2020-08-19 06:50:27,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:50:27,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:27,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:50:27,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:50:27,759 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-08-19 06:50:27,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:27,940 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-08-19 06:50:27,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:50:27,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-19 06:50:27,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:27,941 INFO L225 Difference]: With dead ends: 83 [2020-08-19 06:50:27,942 INFO L226 Difference]: Without dead ends: 79 [2020-08-19 06:50:27,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:50:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-19 06:50:27,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-08-19 06:50:27,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 06:50:27,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-08-19 06:50:27,953 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-08-19 06:50:27,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:27,953 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-08-19 06:50:27,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:50:27,953 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-08-19 06:50:27,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 06:50:27,954 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:27,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:27,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:50:27,955 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:27,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:27,955 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-08-19 06:50:27,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:27,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611056802] [2020-08-19 06:50:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:28,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:28,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:28,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611056802] [2020-08-19 06:50:28,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:28,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:50:28,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205839623] [2020-08-19 06:50:28,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:50:28,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:28,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:50:28,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:50:28,014 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 6 states. [2020-08-19 06:50:28,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:28,217 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-08-19 06:50:28,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:50:28,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-19 06:50:28,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:28,219 INFO L225 Difference]: With dead ends: 136 [2020-08-19 06:50:28,219 INFO L226 Difference]: Without dead ends: 116 [2020-08-19 06:50:28,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:50:28,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-19 06:50:28,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-08-19 06:50:28,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-19 06:50:28,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-19 06:50:28,227 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-08-19 06:50:28,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:28,227 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-19 06:50:28,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:50:28,228 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-19 06:50:28,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 06:50:28,228 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:28,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:28,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:50:28,229 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:28,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:28,229 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-08-19 06:50:28,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:28,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925399246] [2020-08-19 06:50:28,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:28,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:28,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925399246] [2020-08-19 06:50:28,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:28,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:50:28,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961145945] [2020-08-19 06:50:28,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:50:28,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:28,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:50:28,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:50:28,304 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-08-19 06:50:28,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:28,436 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-08-19 06:50:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:50:28,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-19 06:50:28,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:28,438 INFO L225 Difference]: With dead ends: 141 [2020-08-19 06:50:28,438 INFO L226 Difference]: Without dead ends: 99 [2020-08-19 06:50:28,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:50:28,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-19 06:50:28,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-19 06:50:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-19 06:50:28,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-19 06:50:28,446 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 24 [2020-08-19 06:50:28,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:28,446 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-19 06:50:28,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:50:28,446 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-19 06:50:28,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 06:50:28,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:28,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:28,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:50:28,448 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:28,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:28,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-08-19 06:50:28,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:28,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183265851] [2020-08-19 06:50:28,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:28,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:28,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183265851] [2020-08-19 06:50:28,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:28,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:50:28,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318985485] [2020-08-19 06:50:28,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:50:28,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:28,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:50:28,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:50:28,498 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-19 06:50:28,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:28,630 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-08-19 06:50:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:50:28,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 06:50:28,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:28,632 INFO L225 Difference]: With dead ends: 78 [2020-08-19 06:50:28,632 INFO L226 Difference]: Without dead ends: 76 [2020-08-19 06:50:28,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:50:28,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-19 06:50:28,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-08-19 06:50:28,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 06:50:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-19 06:50:28,638 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 25 [2020-08-19 06:50:28,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:28,639 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-19 06:50:28,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:50:28,639 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-19 06:50:28,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 06:50:28,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:28,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:28,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:50:28,641 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:28,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:28,641 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-08-19 06:50:28,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:28,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652355126] [2020-08-19 06:50:28,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:28,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:28,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:28,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652355126] [2020-08-19 06:50:28,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:28,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:50:28,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653883824] [2020-08-19 06:50:28,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:50:28,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:28,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:50:28,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:50:28,705 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 5 states. [2020-08-19 06:50:28,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:28,919 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-08-19 06:50:28,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:50:28,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-19 06:50:28,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:28,922 INFO L225 Difference]: With dead ends: 194 [2020-08-19 06:50:28,922 INFO L226 Difference]: Without dead ends: 130 [2020-08-19 06:50:28,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:50:28,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-19 06:50:28,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-08-19 06:50:28,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-19 06:50:28,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-19 06:50:28,930 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 27 [2020-08-19 06:50:28,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:28,930 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-19 06:50:28,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:50:28,930 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-19 06:50:28,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 06:50:28,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:28,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:28,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:50:28,932 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:28,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:28,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-08-19 06:50:28,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:28,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892867067] [2020-08-19 06:50:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:29,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:29,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892867067] [2020-08-19 06:50:29,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:29,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:50:29,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187025776] [2020-08-19 06:50:29,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:50:29,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:29,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:50:29,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:50:29,013 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2020-08-19 06:50:29,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:29,148 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-08-19 06:50:29,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:50:29,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-19 06:50:29,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:29,149 INFO L225 Difference]: With dead ends: 79 [2020-08-19 06:50:29,149 INFO L226 Difference]: Without dead ends: 77 [2020-08-19 06:50:29,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:50:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-19 06:50:29,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-19 06:50:29,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 06:50:29,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-19 06:50:29,157 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2020-08-19 06:50:29,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:29,157 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-19 06:50:29,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:50:29,158 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-19 06:50:29,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 06:50:29,159 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:29,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:29,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:50:29,160 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:29,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:29,160 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-08-19 06:50:29,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:29,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010982470] [2020-08-19 06:50:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:29,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:29,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:29,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010982470] [2020-08-19 06:50:29,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:29,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:50:29,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763762100] [2020-08-19 06:50:29,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:50:29,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:29,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:50:29,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:50:29,299 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2020-08-19 06:50:29,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:29,618 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-08-19 06:50:29,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:50:29,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-19 06:50:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:29,620 INFO L225 Difference]: With dead ends: 182 [2020-08-19 06:50:29,620 INFO L226 Difference]: Without dead ends: 139 [2020-08-19 06:50:29,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:50:29,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-19 06:50:29,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-08-19 06:50:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-19 06:50:29,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-08-19 06:50:29,631 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 28 [2020-08-19 06:50:29,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:29,632 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-08-19 06:50:29,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:50:29,632 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-08-19 06:50:29,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 06:50:29,636 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:29,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:29,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:50:29,639 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:29,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:29,639 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-08-19 06:50:29,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:29,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418700795] [2020-08-19 06:50:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:29,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:29,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418700795] [2020-08-19 06:50:29,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:29,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:50:29,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409617673] [2020-08-19 06:50:29,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:50:29,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:29,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:50:29,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:50:29,887 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 8 states. [2020-08-19 06:50:30,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:30,561 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-08-19 06:50:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:50:30,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-19 06:50:30,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:30,565 INFO L225 Difference]: With dead ends: 237 [2020-08-19 06:50:30,565 INFO L226 Difference]: Without dead ends: 235 [2020-08-19 06:50:30,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:50:30,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-19 06:50:30,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 98. [2020-08-19 06:50:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-19 06:50:30,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-08-19 06:50:30,580 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28 [2020-08-19 06:50:30,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:30,581 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-08-19 06:50:30,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:50:30,582 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-08-19 06:50:30,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 06:50:30,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:30,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:30,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 06:50:30,583 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:30,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:30,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-08-19 06:50:30,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:30,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159119098] [2020-08-19 06:50:30,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:30,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 06:50:30,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159119098] [2020-08-19 06:50:30,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:30,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:50:30,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785379832] [2020-08-19 06:50:30,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:50:30,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:30,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:50:30,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:50:30,646 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-08-19 06:50:30,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:30,879 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-08-19 06:50:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:50:30,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-19 06:50:30,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:30,882 INFO L225 Difference]: With dead ends: 145 [2020-08-19 06:50:30,882 INFO L226 Difference]: Without dead ends: 127 [2020-08-19 06:50:30,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:50:30,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-19 06:50:30,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-08-19 06:50:30,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 06:50:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2020-08-19 06:50:30,893 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 30 [2020-08-19 06:50:30,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:30,893 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2020-08-19 06:50:30,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:50:30,893 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2020-08-19 06:50:30,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 06:50:30,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:30,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:30,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 06:50:30,895 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:30,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:30,896 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-08-19 06:50:30,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:30,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200196836] [2020-08-19 06:50:30,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:30,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 06:50:30,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200196836] [2020-08-19 06:50:30,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:30,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:50:30,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375245650] [2020-08-19 06:50:30,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:50:30,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:30,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:50:30,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:50:30,952 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand 4 states. [2020-08-19 06:50:31,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:31,145 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-08-19 06:50:31,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:50:31,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-19 06:50:31,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:31,147 INFO L225 Difference]: With dead ends: 119 [2020-08-19 06:50:31,147 INFO L226 Difference]: Without dead ends: 117 [2020-08-19 06:50:31,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:50:31,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-19 06:50:31,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-19 06:50:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-19 06:50:31,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-08-19 06:50:31,155 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 30 [2020-08-19 06:50:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:31,156 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-08-19 06:50:31,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:50:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-08-19 06:50:31,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-19 06:50:31,157 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:31,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:31,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 06:50:31,157 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:31,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-08-19 06:50:31,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:31,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356875677] [2020-08-19 06:50:31,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:31,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:31,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356875677] [2020-08-19 06:50:31,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:31,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:50:31,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235083259] [2020-08-19 06:50:31,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:50:31,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:31,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:50:31,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:50:31,378 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 8 states. [2020-08-19 06:50:32,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:32,026 INFO L93 Difference]: Finished difference Result 240 states and 275 transitions. [2020-08-19 06:50:32,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:50:32,026 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-19 06:50:32,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:32,028 INFO L225 Difference]: With dead ends: 240 [2020-08-19 06:50:32,028 INFO L226 Difference]: Without dead ends: 238 [2020-08-19 06:50:32,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:50:32,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-19 06:50:32,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 120. [2020-08-19 06:50:32,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 06:50:32,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-08-19 06:50:32,038 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 31 [2020-08-19 06:50:32,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:32,039 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-08-19 06:50:32,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:50:32,039 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-08-19 06:50:32,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 06:50:32,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:32,040 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:32,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 06:50:32,041 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:32,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:32,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-08-19 06:50:32,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:32,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786251228] [2020-08-19 06:50:32,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:32,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:32,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786251228] [2020-08-19 06:50:32,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:50:32,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 06:50:32,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42833007] [2020-08-19 06:50:32,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:50:32,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:32,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:50:32,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:50:32,130 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 6 states. [2020-08-19 06:50:32,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:32,442 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2020-08-19 06:50:32,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:50:32,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-19 06:50:32,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:32,444 INFO L225 Difference]: With dead ends: 207 [2020-08-19 06:50:32,444 INFO L226 Difference]: Without dead ends: 145 [2020-08-19 06:50:32,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:50:32,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-19 06:50:32,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2020-08-19 06:50:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-19 06:50:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-08-19 06:50:32,456 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2020-08-19 06:50:32,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:32,457 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-08-19 06:50:32,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:50:32,457 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-08-19 06:50:32,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 06:50:32,458 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:32,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:32,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 06:50:32,459 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:32,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:32,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-08-19 06:50:32,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:32,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933725580] [2020-08-19 06:50:32,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:32,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933725580] [2020-08-19 06:50:32,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:32,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 06:50:32,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954643348] [2020-08-19 06:50:32,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 06:50:32,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:32,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 06:50:32,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:50:32,565 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 7 states. [2020-08-19 06:50:32,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:32,882 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-08-19 06:50:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:50:32,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-19 06:50:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:32,884 INFO L225 Difference]: With dead ends: 198 [2020-08-19 06:50:32,884 INFO L226 Difference]: Without dead ends: 178 [2020-08-19 06:50:32,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:50:32,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-19 06:50:32,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-08-19 06:50:32,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-19 06:50:32,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-08-19 06:50:32,894 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 33 [2020-08-19 06:50:32,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:32,895 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-08-19 06:50:32,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 06:50:32,895 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-08-19 06:50:32,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 06:50:32,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:32,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:32,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 06:50:32,896 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:32,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:32,897 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-08-19 06:50:32,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:32,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251719975] [2020-08-19 06:50:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:32,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 06:50:32,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251719975] [2020-08-19 06:50:32,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:32,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:50:32,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343618974] [2020-08-19 06:50:32,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:50:32,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:32,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:50:32,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:50:32,968 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2020-08-19 06:50:33,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:33,220 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-08-19 06:50:33,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:50:33,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-19 06:50:33,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:33,228 INFO L225 Difference]: With dead ends: 182 [2020-08-19 06:50:33,228 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 06:50:33,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:50:33,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 06:50:33,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-08-19 06:50:33,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-19 06:50:33,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-08-19 06:50:33,241 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 33 [2020-08-19 06:50:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:33,241 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-08-19 06:50:33,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:50:33,241 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-08-19 06:50:33,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-19 06:50:33,242 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:33,242 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:33,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 06:50:33,243 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:33,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:33,243 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-08-19 06:50:33,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:33,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456820088] [2020-08-19 06:50:33,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:33,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:33,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:33,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456820088] [2020-08-19 06:50:33,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:50:33,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 06:50:33,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714485704] [2020-08-19 06:50:33,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 06:50:33,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:33,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 06:50:33,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:50:33,331 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 7 states. [2020-08-19 06:50:33,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:33,739 INFO L93 Difference]: Finished difference Result 241 states and 276 transitions. [2020-08-19 06:50:33,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:50:33,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-19 06:50:33,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:33,741 INFO L225 Difference]: With dead ends: 241 [2020-08-19 06:50:33,742 INFO L226 Difference]: Without dead ends: 210 [2020-08-19 06:50:33,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:50:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-19 06:50:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 169. [2020-08-19 06:50:33,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-19 06:50:33,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-08-19 06:50:33,755 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 36 [2020-08-19 06:50:33,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:33,755 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-08-19 06:50:33,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 06:50:33,756 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-08-19 06:50:33,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-19 06:50:33,756 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:33,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:33,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 06:50:33,758 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:33,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:33,759 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-08-19 06:50:33,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:33,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811513978] [2020-08-19 06:50:33,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:33,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:33,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811513978] [2020-08-19 06:50:33,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:33,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:50:33,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599231636] [2020-08-19 06:50:33,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:50:33,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:33,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:50:33,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:50:33,827 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 4 states. [2020-08-19 06:50:33,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:33,990 INFO L93 Difference]: Finished difference Result 354 states and 437 transitions. [2020-08-19 06:50:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:50:33,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-08-19 06:50:33,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:33,992 INFO L225 Difference]: With dead ends: 354 [2020-08-19 06:50:33,992 INFO L226 Difference]: Without dead ends: 258 [2020-08-19 06:50:33,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:50:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-19 06:50:34,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-19 06:50:34,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-19 06:50:34,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2020-08-19 06:50:34,005 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 36 [2020-08-19 06:50:34,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:34,005 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2020-08-19 06:50:34,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:50:34,005 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2020-08-19 06:50:34,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-19 06:50:34,006 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:34,006 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:34,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 06:50:34,007 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:34,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:34,007 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-08-19 06:50:34,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:34,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57421223] [2020-08-19 06:50:34,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:34,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:34,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57421223] [2020-08-19 06:50:34,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:50:34,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 06:50:34,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467427296] [2020-08-19 06:50:34,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:50:34,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:34,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:50:34,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:50:34,249 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand 10 states. [2020-08-19 06:50:35,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:35,090 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2020-08-19 06:50:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 06:50:35,090 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-19 06:50:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:35,092 INFO L225 Difference]: With dead ends: 430 [2020-08-19 06:50:35,093 INFO L226 Difference]: Without dead ends: 338 [2020-08-19 06:50:35,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-08-19 06:50:35,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-19 06:50:35,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 235. [2020-08-19 06:50:35,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-19 06:50:35,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2020-08-19 06:50:35,137 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 40 [2020-08-19 06:50:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:35,137 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2020-08-19 06:50:35,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:50:35,138 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2020-08-19 06:50:35,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-19 06:50:35,139 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:35,139 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:35,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 06:50:35,139 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:35,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:35,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-08-19 06:50:35,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:35,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218338480] [2020-08-19 06:50:35,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:35,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:35,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:35,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218338480] [2020-08-19 06:50:35,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:50:35,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:50:35,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280502169] [2020-08-19 06:50:35,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:50:35,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:35,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:50:35,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:50:35,196 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand 6 states. [2020-08-19 06:50:35,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:35,405 INFO L93 Difference]: Finished difference Result 353 states and 426 transitions. [2020-08-19 06:50:35,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:50:35,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-08-19 06:50:35,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:35,408 INFO L225 Difference]: With dead ends: 353 [2020-08-19 06:50:35,408 INFO L226 Difference]: Without dead ends: 244 [2020-08-19 06:50:35,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:50:35,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-19 06:50:35,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2020-08-19 06:50:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-19 06:50:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2020-08-19 06:50:35,423 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 40 [2020-08-19 06:50:35,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:35,424 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2020-08-19 06:50:35,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:50:35,424 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2020-08-19 06:50:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-19 06:50:35,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:35,425 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:35,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-19 06:50:35,425 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:35,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:35,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-08-19 06:50:35,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:35,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205688510] [2020-08-19 06:50:35,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:35,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:50:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:50:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:50:35,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205688510] [2020-08-19 06:50:35,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:50:35,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 06:50:35,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250283115] [2020-08-19 06:50:35,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:50:35,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:50:35,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:50:35,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:50:35,738 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand 10 states. [2020-08-19 06:50:36,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:50:36,470 INFO L93 Difference]: Finished difference Result 441 states and 526 transitions. [2020-08-19 06:50:36,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 06:50:36,471 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-19 06:50:36,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:50:36,473 INFO L225 Difference]: With dead ends: 441 [2020-08-19 06:50:36,473 INFO L226 Difference]: Without dead ends: 349 [2020-08-19 06:50:36,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-08-19 06:50:36,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-19 06:50:36,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 239. [2020-08-19 06:50:36,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-19 06:50:36,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2020-08-19 06:50:36,488 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 40 [2020-08-19 06:50:36,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:50:36,489 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2020-08-19 06:50:36,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:50:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2020-08-19 06:50:36,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-19 06:50:36,490 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:50:36,490 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:50:36,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-19 06:50:36,491 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:50:36,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:50:36,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-08-19 06:50:36,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:50:36,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785637843] [2020-08-19 06:50:36,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:50:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:50:36,508 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:50:36,509 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:50:36,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-19 06:50:36,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:50:36 BoogieIcfgContainer [2020-08-19 06:50:36,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:50:36,539 INFO L168 Benchmark]: Toolchain (without parser) took 12211.64 ms. Allocated memory was 146.8 MB in the beginning and 336.6 MB in the end (delta: 189.8 MB). Free memory was 100.5 MB in the beginning and 108.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 182.2 MB. Max. memory is 7.1 GB. [2020-08-19 06:50:36,540 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 06:50:36,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.44 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 100.2 MB in the beginning and 169.6 MB in the end (delta: -69.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-08-19 06:50:36,541 INFO L168 Benchmark]: Boogie Preprocessor took 82.75 ms. Allocated memory is still 203.4 MB. Free memory was 169.6 MB in the beginning and 165.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:50:36,541 INFO L168 Benchmark]: RCFGBuilder took 772.02 ms. Allocated memory is still 203.4 MB. Free memory was 165.6 MB in the beginning and 110.6 MB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:50:36,542 INFO L168 Benchmark]: TraceAbstraction took 10625.02 ms. Allocated memory was 203.4 MB in the beginning and 336.6 MB in the end (delta: 133.2 MB). Free memory was 109.9 MB in the beginning and 108.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 135.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:50:36,544 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 726.44 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 100.2 MB in the beginning and 169.6 MB in the end (delta: -69.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.75 ms. Allocated memory is still 203.4 MB. Free memory was 169.6 MB in the beginning and 165.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 772.02 ms. Allocated memory is still 203.4 MB. Free memory was 165.6 MB in the beginning and 110.6 MB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10625.02 ms. Allocated memory was 203.4 MB in the beginning and 336.6 MB in the end (delta: 133.2 MB). Free memory was 109.9 MB in the beginning and 108.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 135.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 89 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.5s, OverallIterations: 24, TraceHistogramMax: 2, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1788 SDtfs, 2214 SDslu, 3432 SDs, 0 SdLazy, 4020 SolverSat, 226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 892 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 157879 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 19 PerfectInterpolantSequences, 9/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...