/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-22 05:29:46,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:29:46,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:29:46,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:29:46,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:29:46,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:29:46,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:29:46,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:29:46,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:29:46,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:29:46,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:29:46,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:29:46,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:29:46,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:29:46,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:29:46,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:29:46,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:29:46,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:29:46,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:29:46,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:29:46,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:29:46,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:29:46,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:29:46,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:29:46,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:29:46,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:29:46,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:29:46,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:29:46,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:29:46,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:29:46,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:29:46,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:29:46,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:29:46,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:29:46,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:29:46,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:29:46,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:29:46,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:29:46,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:29:46,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:29:46,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:29:46,994 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 [2020-08-22 05:29:47,018 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:29:47,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:29:47,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:29:47,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:29:47,020 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:29:47,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:29:47,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:29:47,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:29:47,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:29:47,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:29:47,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:29:47,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:29:47,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:29:47,022 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:29:47,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:29:47,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:29:47,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:29:47,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:29:47,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:29:47,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:29:47,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:29:47,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:29:47,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:29:47,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:29:47,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:29:47,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:29:47,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:29:47,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:29:47,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:29:47,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:29:47,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:29:47,374 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:29:47,378 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:29:47,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:29:47,380 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:29:47,381 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-22 05:29:47,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a4ded826/8b67c42c6ae7461b9ec22f63537ae0da/FLAG414ad3d8a [2020-08-22 05:29:48,093 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:29:48,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-22 05:29:48,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a4ded826/8b67c42c6ae7461b9ec22f63537ae0da/FLAG414ad3d8a [2020-08-22 05:29:48,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a4ded826/8b67c42c6ae7461b9ec22f63537ae0da [2020-08-22 05:29:48,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:29:48,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:29:48,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:29:48,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:29:48,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:29:48,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:29:48" (1/1) ... [2020-08-22 05:29:48,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c6fcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:29:48, skipping insertion in model container [2020-08-22 05:29:48,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:29:48" (1/1) ... [2020-08-22 05:29:48,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:29:48,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:29:48,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:29:48,926 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:29:48,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:29:49,058 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:29:49,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:29:49 WrapperNode [2020-08-22 05:29:49,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:29:49,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:29:49,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:29:49,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:29:49,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:29:49" (1/1) ... [2020-08-22 05:29:49,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:29:49" (1/1) ... [2020-08-22 05:29:49,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:29:49" (1/1) ... [2020-08-22 05:29:49,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:29:49" (1/1) ... [2020-08-22 05:29:49,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:29:49" (1/1) ... [2020-08-22 05:29:49,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:29:49" (1/1) ... [2020-08-22 05:29:49,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:29:49" (1/1) ... [2020-08-22 05:29:49,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:29:49,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:29:49,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:29:49,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:29:49,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:29:49" (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 [2020-08-22 05:29:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:29:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:29:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:29:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 05:29:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 05:29:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 05:29:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 05:29:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 05:29:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 05:29:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 05:29:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 05:29:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 05:29:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 05:29:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 05:29:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 05:29:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 05:29:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 05:29:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 05:29:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 05:29:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 05:29:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 05:29:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 05:29:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 05:29:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 05:29:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 05:29:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 05:29:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 05:29:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 05:29:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 05:29:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 05:29:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 05:29:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 05:29:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 05:29:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 05:29:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 05:29:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 05:29:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 05:29:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 05:29:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 05:29:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 05:29:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 05:29:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 05:29:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 05:29:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 05:29:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 05:29:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 05:29:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 05:29:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 05:29:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 05:29:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 05:29:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 05:29:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 05:29:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 05:29:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:29:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 05:29:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 05:29:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:29:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 05:29:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 05:29:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 05:29:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 05:29:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 05:29:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 05:29:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 05:29:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 05:29:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 05:29:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 05:29:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 05:29:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 05:29:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 05:29:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 05:29:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 05:29:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 05:29:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 05:29:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 05:29:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 05:29:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 05:29:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 05:29:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 05:29:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 05:29:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 05:29:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 05:29:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 05:29:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 05:29:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 05:29:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 05:29:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 05:29:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 05:29:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 05:29:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 05:29:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 05:29:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 05:29:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 05:29:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 05:29:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 05:29:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 05:29:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 05:29:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 05:29:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 05:29:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 05:29:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 05:29:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 05:29:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 05:29:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 05:29:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 05:29:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 05:29:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:29:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:29:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:29:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:29:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:29:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:29:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:29:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:29:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:29:49,862 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:29:49,863 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-22 05:29:49,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:29:49 BoogieIcfgContainer [2020-08-22 05:29:49,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:29:49,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:29:49,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:29:49,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:29:49,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:29:48" (1/3) ... [2020-08-22 05:29:49,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4627bbf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:29:49, skipping insertion in model container [2020-08-22 05:29:49,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:29:49" (2/3) ... [2020-08-22 05:29:49,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4627bbf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:29:49, skipping insertion in model container [2020-08-22 05:29:49,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:29:49" (3/3) ... [2020-08-22 05:29:49,885 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-22 05:29:49,897 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:29:49,908 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-22 05:29:49,929 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-22 05:29:49,963 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:29:49,964 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:29:49,964 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:29:49,964 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:29:49,965 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:29:49,965 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:29:49,966 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:29:49,966 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:29:50,003 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-22 05:29:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-22 05:29:50,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:50,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:29:50,021 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]=== [2020-08-22 05:29:50,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:50,029 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-08-22 05:29:50,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:50,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703956301] [2020-08-22 05:29:50,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:50,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:50,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703956301] [2020-08-22 05:29:50,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:50,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:29:50,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815504944] [2020-08-22 05:29:50,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:29:50,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:50,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:29:50,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:29:50,304 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-08-22 05:29:50,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:50,582 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-08-22 05:29:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:29:50,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-22 05:29:50,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:50,596 INFO L225 Difference]: With dead ends: 188 [2020-08-22 05:29:50,596 INFO L226 Difference]: Without dead ends: 100 [2020-08-22 05:29:50,601 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 [2020-08-22 05:29:50,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-22 05:29:50,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-08-22 05:29:50,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-22 05:29:50,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-22 05:29:50,653 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-08-22 05:29:50,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:50,654 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-22 05:29:50,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:29:50,654 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-22 05:29:50,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 05:29:50,655 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:50,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:29:50,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:29:50,656 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]=== [2020-08-22 05:29:50,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:50,656 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-08-22 05:29:50,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:50,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918227369] [2020-08-22 05:29:50,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:50,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:50,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918227369] [2020-08-22 05:29:50,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:50,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:29:50,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419290688] [2020-08-22 05:29:50,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:29:50,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:50,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:29:50,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:29:50,763 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-08-22 05:29:50,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:50,940 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-08-22 05:29:50,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:29:50,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-22 05:29:50,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:50,942 INFO L225 Difference]: With dead ends: 85 [2020-08-22 05:29:50,942 INFO L226 Difference]: Without dead ends: 83 [2020-08-22 05:29:50,943 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 [2020-08-22 05:29:50,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-22 05:29:50,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-22 05:29:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-22 05:29:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-08-22 05:29:50,965 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-08-22 05:29:50,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:50,966 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-08-22 05:29:50,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:29:50,966 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-08-22 05:29:50,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 05:29:50,967 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:50,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:29:50,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:29:50,968 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]=== [2020-08-22 05:29:50,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:50,969 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-08-22 05:29:50,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:50,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137186717] [2020-08-22 05:29:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:51,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:51,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137186717] [2020-08-22 05:29:51,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:51,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:29:51,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275051300] [2020-08-22 05:29:51,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:29:51,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:51,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:29:51,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:29:51,063 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-08-22 05:29:51,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:51,296 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-08-22 05:29:51,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 05:29:51,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-22 05:29:51,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:51,299 INFO L225 Difference]: With dead ends: 140 [2020-08-22 05:29:51,299 INFO L226 Difference]: Without dead ends: 138 [2020-08-22 05:29:51,300 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 [2020-08-22 05:29:51,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-22 05:29:51,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-08-22 05:29:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-22 05:29:51,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-22 05:29:51,310 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-08-22 05:29:51,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:51,311 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-22 05:29:51,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:29:51,311 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-22 05:29:51,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 05:29:51,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:51,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:29:51,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:29:51,313 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]=== [2020-08-22 05:29:51,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:51,313 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-08-22 05:29:51,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:51,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676177206] [2020-08-22 05:29:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:51,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:51,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676177206] [2020-08-22 05:29:51,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:51,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:29:51,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812981064] [2020-08-22 05:29:51,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:29:51,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:51,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:29:51,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:29:51,430 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-08-22 05:29:51,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:51,619 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-08-22 05:29:51,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:29:51,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-22 05:29:51,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:51,621 INFO L225 Difference]: With dead ends: 85 [2020-08-22 05:29:51,622 INFO L226 Difference]: Without dead ends: 83 [2020-08-22 05:29:51,622 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 [2020-08-22 05:29:51,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-22 05:29:51,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-08-22 05:29:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-22 05:29:51,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-08-22 05:29:51,631 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-08-22 05:29:51,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:51,632 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-08-22 05:29:51,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:29:51,632 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-08-22 05:29:51,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 05:29:51,633 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:51,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:29:51,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:29:51,634 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]=== [2020-08-22 05:29:51,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:51,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-08-22 05:29:51,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:51,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729621611] [2020-08-22 05:29:51,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:51,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:51,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729621611] [2020-08-22 05:29:51,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:51,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:29:51,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551705911] [2020-08-22 05:29:51,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:29:51,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:51,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:29:51,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:29:51,706 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-08-22 05:29:51,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:51,856 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-08-22 05:29:51,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:29:51,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 05:29:51,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:51,857 INFO L225 Difference]: With dead ends: 83 [2020-08-22 05:29:51,858 INFO L226 Difference]: Without dead ends: 79 [2020-08-22 05:29:51,858 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 [2020-08-22 05:29:51,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-22 05:29:51,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-08-22 05:29:51,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 05:29:51,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-08-22 05:29:51,865 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-08-22 05:29:51,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:51,865 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-08-22 05:29:51,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:29:51,866 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-08-22 05:29:51,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 05:29:51,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:51,867 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] [2020-08-22 05:29:51,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:29:51,867 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]=== [2020-08-22 05:29:51,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:51,867 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-08-22 05:29:51,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:51,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234789952] [2020-08-22 05:29:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:51,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:51,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234789952] [2020-08-22 05:29:51,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:51,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:29:51,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792729235] [2020-08-22 05:29:51,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:29:51,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:51,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:29:51,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:29:51,923 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 6 states. [2020-08-22 05:29:52,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:52,097 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-08-22 05:29:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:29:52,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-22 05:29:52,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:52,099 INFO L225 Difference]: With dead ends: 136 [2020-08-22 05:29:52,099 INFO L226 Difference]: Without dead ends: 116 [2020-08-22 05:29:52,100 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 [2020-08-22 05:29:52,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-22 05:29:52,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-08-22 05:29:52,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-22 05:29:52,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-22 05:29:52,108 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-08-22 05:29:52,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:52,108 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-22 05:29:52,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:29:52,108 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-22 05:29:52,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 05:29:52,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:52,109 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] [2020-08-22 05:29:52,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:29:52,110 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]=== [2020-08-22 05:29:52,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:52,111 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-08-22 05:29:52,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:52,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580313503] [2020-08-22 05:29:52,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:52,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:52,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:52,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580313503] [2020-08-22 05:29:52,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:52,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:29:52,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483969135] [2020-08-22 05:29:52,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:29:52,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:52,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:29:52,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:29:52,156 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-08-22 05:29:52,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:52,279 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-08-22 05:29:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:29:52,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-22 05:29:52,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:52,281 INFO L225 Difference]: With dead ends: 141 [2020-08-22 05:29:52,281 INFO L226 Difference]: Without dead ends: 99 [2020-08-22 05:29:52,282 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 [2020-08-22 05:29:52,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-22 05:29:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-22 05:29:52,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 05:29:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-22 05:29:52,289 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 24 [2020-08-22 05:29:52,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:52,289 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-22 05:29:52,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:29:52,290 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-22 05:29:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 05:29:52,290 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:52,291 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] [2020-08-22 05:29:52,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:29:52,291 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]=== [2020-08-22 05:29:52,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:52,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-08-22 05:29:52,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:52,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252484261] [2020-08-22 05:29:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:52,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:52,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252484261] [2020-08-22 05:29:52,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:52,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:29:52,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992749955] [2020-08-22 05:29:52,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:29:52,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:52,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:29:52,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:29:52,338 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-22 05:29:52,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:52,453 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-08-22 05:29:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:29:52,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 05:29:52,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:52,454 INFO L225 Difference]: With dead ends: 78 [2020-08-22 05:29:52,455 INFO L226 Difference]: Without dead ends: 76 [2020-08-22 05:29:52,455 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 [2020-08-22 05:29:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-22 05:29:52,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-08-22 05:29:52,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 05:29:52,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-22 05:29:52,461 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 25 [2020-08-22 05:29:52,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:52,461 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-22 05:29:52,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:29:52,461 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-22 05:29:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 05:29:52,462 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:52,462 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] [2020-08-22 05:29:52,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:29:52,463 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]=== [2020-08-22 05:29:52,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:52,463 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-08-22 05:29:52,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:52,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416225175] [2020-08-22 05:29:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:52,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:52,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416225175] [2020-08-22 05:29:52,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:52,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:29:52,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795697350] [2020-08-22 05:29:52,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:29:52,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:52,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:29:52,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:29:52,514 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 5 states. [2020-08-22 05:29:52,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:52,759 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-08-22 05:29:52,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:29:52,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-22 05:29:52,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:52,761 INFO L225 Difference]: With dead ends: 194 [2020-08-22 05:29:52,761 INFO L226 Difference]: Without dead ends: 130 [2020-08-22 05:29:52,762 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 [2020-08-22 05:29:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-22 05:29:52,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-08-22 05:29:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 05:29:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-22 05:29:52,768 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 27 [2020-08-22 05:29:52,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:52,768 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-22 05:29:52,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:29:52,768 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-22 05:29:52,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 05:29:52,769 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:52,769 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] [2020-08-22 05:29:52,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:29:52,770 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]=== [2020-08-22 05:29:52,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:52,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-08-22 05:29:52,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:52,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182903702] [2020-08-22 05:29:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:52,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:52,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182903702] [2020-08-22 05:29:52,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:52,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:29:52,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616499775] [2020-08-22 05:29:52,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:29:52,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:52,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:29:52,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:29:52,824 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2020-08-22 05:29:52,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:52,965 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-08-22 05:29:52,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:29:52,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-22 05:29:52,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:52,967 INFO L225 Difference]: With dead ends: 79 [2020-08-22 05:29:52,967 INFO L226 Difference]: Without dead ends: 77 [2020-08-22 05:29:52,968 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 [2020-08-22 05:29:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-22 05:29:52,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-22 05:29:52,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 05:29:52,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-22 05:29:52,974 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2020-08-22 05:29:52,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:52,974 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-22 05:29:52,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:29:52,974 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-22 05:29:52,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 05:29:52,975 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:52,976 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] [2020-08-22 05:29:52,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:29:52,976 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]=== [2020-08-22 05:29:52,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:52,976 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-08-22 05:29:52,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:52,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465229873] [2020-08-22 05:29:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:53,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:53,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465229873] [2020-08-22 05:29:53,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:53,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:29:53,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933714677] [2020-08-22 05:29:53,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:29:53,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:53,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:29:53,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:29:53,048 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2020-08-22 05:29:53,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:53,365 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-08-22 05:29:53,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:29:53,365 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-22 05:29:53,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:53,367 INFO L225 Difference]: With dead ends: 182 [2020-08-22 05:29:53,367 INFO L226 Difference]: Without dead ends: 139 [2020-08-22 05:29:53,368 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 [2020-08-22 05:29:53,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-22 05:29:53,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-08-22 05:29:53,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-22 05:29:53,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-08-22 05:29:53,373 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 28 [2020-08-22 05:29:53,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:53,374 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-08-22 05:29:53,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:29:53,374 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-08-22 05:29:53,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 05:29:53,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:53,375 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] [2020-08-22 05:29:53,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 05:29:53,375 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]=== [2020-08-22 05:29:53,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:53,376 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-08-22 05:29:53,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:53,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172793003] [2020-08-22 05:29:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:53,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:53,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172793003] [2020-08-22 05:29:53,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:53,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:29:53,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120701164] [2020-08-22 05:29:53,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:29:53,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:53,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:29:53,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:29:53,602 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 8 states. [2020-08-22 05:29:54,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:54,312 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-08-22 05:29:54,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:29:54,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-22 05:29:54,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:54,316 INFO L225 Difference]: With dead ends: 237 [2020-08-22 05:29:54,316 INFO L226 Difference]: Without dead ends: 235 [2020-08-22 05:29:54,317 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 [2020-08-22 05:29:54,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-22 05:29:54,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 98. [2020-08-22 05:29:54,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-22 05:29:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-08-22 05:29:54,325 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28 [2020-08-22 05:29:54,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:54,325 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-08-22 05:29:54,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:29:54,326 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-08-22 05:29:54,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 05:29:54,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:54,327 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] [2020-08-22 05:29:54,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 05:29:54,327 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]=== [2020-08-22 05:29:54,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:54,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-08-22 05:29:54,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:54,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318459635] [2020-08-22 05:29:54,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:54,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 05:29:54,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318459635] [2020-08-22 05:29:54,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:54,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:29:54,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228004184] [2020-08-22 05:29:54,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:29:54,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:54,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:29:54,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:29:54,383 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-08-22 05:29:54,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:54,613 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-08-22 05:29:54,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 05:29:54,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-22 05:29:54,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:54,615 INFO L225 Difference]: With dead ends: 145 [2020-08-22 05:29:54,615 INFO L226 Difference]: Without dead ends: 127 [2020-08-22 05:29:54,616 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 [2020-08-22 05:29:54,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-22 05:29:54,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-08-22 05:29:54,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-22 05:29:54,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2020-08-22 05:29:54,622 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 30 [2020-08-22 05:29:54,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:54,623 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2020-08-22 05:29:54,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:29:54,623 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2020-08-22 05:29:54,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 05:29:54,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:54,624 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] [2020-08-22 05:29:54,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 05:29:54,625 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]=== [2020-08-22 05:29:54,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:54,625 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-08-22 05:29:54,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:54,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948941024] [2020-08-22 05:29:54,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:54,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 05:29:54,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948941024] [2020-08-22 05:29:54,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:54,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:29:54,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692875688] [2020-08-22 05:29:54,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:29:54,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:54,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:29:54,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:29:54,662 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand 4 states. [2020-08-22 05:29:54,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:54,799 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-08-22 05:29:54,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:29:54,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-22 05:29:54,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:54,801 INFO L225 Difference]: With dead ends: 119 [2020-08-22 05:29:54,801 INFO L226 Difference]: Without dead ends: 117 [2020-08-22 05:29:54,802 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 [2020-08-22 05:29:54,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-22 05:29:54,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-22 05:29:54,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-22 05:29:54,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-08-22 05:29:54,810 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 30 [2020-08-22 05:29:54,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:54,810 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-08-22 05:29:54,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:29:54,810 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-08-22 05:29:54,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 05:29:54,811 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:54,812 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] [2020-08-22 05:29:54,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 05:29:54,812 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]=== [2020-08-22 05:29:54,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:54,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-08-22 05:29:54,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:54,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434860438] [2020-08-22 05:29:54,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:54,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:55,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434860438] [2020-08-22 05:29:55,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:55,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:29:55,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001735645] [2020-08-22 05:29:55,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:29:55,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:55,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:29:55,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:29:55,003 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 8 states. [2020-08-22 05:29:55,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:55,656 INFO L93 Difference]: Finished difference Result 240 states and 275 transitions. [2020-08-22 05:29:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:29:55,657 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-22 05:29:55,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:55,659 INFO L225 Difference]: With dead ends: 240 [2020-08-22 05:29:55,659 INFO L226 Difference]: Without dead ends: 238 [2020-08-22 05:29:55,660 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 [2020-08-22 05:29:55,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-22 05:29:55,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 120. [2020-08-22 05:29:55,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 05:29:55,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-08-22 05:29:55,670 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 31 [2020-08-22 05:29:55,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:55,671 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-08-22 05:29:55,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:29:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-08-22 05:29:55,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 05:29:55,672 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:55,672 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] [2020-08-22 05:29:55,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 05:29:55,672 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]=== [2020-08-22 05:29:55,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:55,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-08-22 05:29:55,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:55,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138388291] [2020-08-22 05:29:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:55,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:55,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:55,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138388291] [2020-08-22 05:29:55,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:29:55,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 05:29:55,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969854211] [2020-08-22 05:29:55,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:29:55,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:55,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:29:55,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:29:55,758 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 6 states. [2020-08-22 05:29:56,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:56,040 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2020-08-22 05:29:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:29:56,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-22 05:29:56,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:56,042 INFO L225 Difference]: With dead ends: 207 [2020-08-22 05:29:56,042 INFO L226 Difference]: Without dead ends: 145 [2020-08-22 05:29:56,043 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 [2020-08-22 05:29:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-22 05:29:56,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2020-08-22 05:29:56,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-22 05:29:56,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-08-22 05:29:56,053 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2020-08-22 05:29:56,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:56,053 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-08-22 05:29:56,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:29:56,054 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-08-22 05:29:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 05:29:56,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:56,055 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] [2020-08-22 05:29:56,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 05:29:56,055 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]=== [2020-08-22 05:29:56,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:56,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-08-22 05:29:56,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:56,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298185112] [2020-08-22 05:29:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:56,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:56,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:56,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298185112] [2020-08-22 05:29:56,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:56,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 05:29:56,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145642913] [2020-08-22 05:29:56,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 05:29:56,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:56,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 05:29:56,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:29:56,130 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 7 states. [2020-08-22 05:29:56,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:56,464 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-08-22 05:29:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:29:56,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-22 05:29:56,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:56,466 INFO L225 Difference]: With dead ends: 198 [2020-08-22 05:29:56,466 INFO L226 Difference]: Without dead ends: 178 [2020-08-22 05:29:56,467 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 [2020-08-22 05:29:56,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-22 05:29:56,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-08-22 05:29:56,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-22 05:29:56,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-08-22 05:29:56,476 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 33 [2020-08-22 05:29:56,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:56,476 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-08-22 05:29:56,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 05:29:56,476 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-08-22 05:29:56,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 05:29:56,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:56,478 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] [2020-08-22 05:29:56,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 05:29:56,478 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]=== [2020-08-22 05:29:56,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:56,479 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-08-22 05:29:56,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:56,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941514441] [2020-08-22 05:29:56,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:56,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 05:29:56,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941514441] [2020-08-22 05:29:56,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:56,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:29:56,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930354985] [2020-08-22 05:29:56,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:29:56,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:56,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:29:56,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:29:56,551 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2020-08-22 05:29:56,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:56,770 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-08-22 05:29:56,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 05:29:56,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-22 05:29:56,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:56,772 INFO L225 Difference]: With dead ends: 182 [2020-08-22 05:29:56,773 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 05:29:56,774 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 [2020-08-22 05:29:56,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 05:29:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-08-22 05:29:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-22 05:29:56,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-08-22 05:29:56,783 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 33 [2020-08-22 05:29:56,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:56,783 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-08-22 05:29:56,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:29:56,783 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-08-22 05:29:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 05:29:56,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:56,784 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] [2020-08-22 05:29:56,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 05:29:56,785 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]=== [2020-08-22 05:29:56,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:56,785 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-08-22 05:29:56,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:56,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242208032] [2020-08-22 05:29:56,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:56,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242208032] [2020-08-22 05:29:56,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:29:56,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 05:29:56,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819794824] [2020-08-22 05:29:56,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 05:29:56,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:56,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 05:29:56,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:29:56,851 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 7 states. [2020-08-22 05:29:57,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:57,185 INFO L93 Difference]: Finished difference Result 241 states and 276 transitions. [2020-08-22 05:29:57,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:29:57,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-22 05:29:57,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:57,187 INFO L225 Difference]: With dead ends: 241 [2020-08-22 05:29:57,187 INFO L226 Difference]: Without dead ends: 210 [2020-08-22 05:29:57,190 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 [2020-08-22 05:29:57,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-22 05:29:57,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 169. [2020-08-22 05:29:57,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-22 05:29:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-08-22 05:29:57,209 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 36 [2020-08-22 05:29:57,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:57,210 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-08-22 05:29:57,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 05:29:57,210 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-08-22 05:29:57,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 05:29:57,210 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:57,211 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] [2020-08-22 05:29:57,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 05:29:57,213 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]=== [2020-08-22 05:29:57,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:57,214 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-08-22 05:29:57,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:57,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495728709] [2020-08-22 05:29:57,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:57,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:57,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495728709] [2020-08-22 05:29:57,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:57,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:29:57,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272722538] [2020-08-22 05:29:57,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:29:57,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:57,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:29:57,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:29:57,281 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 4 states. [2020-08-22 05:29:57,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:57,430 INFO L93 Difference]: Finished difference Result 354 states and 437 transitions. [2020-08-22 05:29:57,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:29:57,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-08-22 05:29:57,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:57,432 INFO L225 Difference]: With dead ends: 354 [2020-08-22 05:29:57,432 INFO L226 Difference]: Without dead ends: 258 [2020-08-22 05:29:57,433 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 [2020-08-22 05:29:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-22 05:29:57,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-22 05:29:57,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-22 05:29:57,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2020-08-22 05:29:57,445 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 36 [2020-08-22 05:29:57,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:57,445 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2020-08-22 05:29:57,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:29:57,446 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2020-08-22 05:29:57,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 05:29:57,446 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:57,446 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] [2020-08-22 05:29:57,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 05:29:57,447 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]=== [2020-08-22 05:29:57,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:57,447 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-08-22 05:29:57,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:57,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434302548] [2020-08-22 05:29:57,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:57,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:57,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434302548] [2020-08-22 05:29:57,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:29:57,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:29:57,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58708698] [2020-08-22 05:29:57,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:29:57,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:57,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:29:57,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:29:57,673 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand 10 states. [2020-08-22 05:29:58,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:58,424 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2020-08-22 05:29:58,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 05:29:58,425 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-22 05:29:58,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:58,427 INFO L225 Difference]: With dead ends: 430 [2020-08-22 05:29:58,427 INFO L226 Difference]: Without dead ends: 338 [2020-08-22 05:29:58,428 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 [2020-08-22 05:29:58,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-22 05:29:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 235. [2020-08-22 05:29:58,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-22 05:29:58,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2020-08-22 05:29:58,447 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 40 [2020-08-22 05:29:58,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:58,448 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2020-08-22 05:29:58,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:29:58,448 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2020-08-22 05:29:58,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 05:29:58,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:58,449 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] [2020-08-22 05:29:58,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 05:29:58,450 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]=== [2020-08-22 05:29:58,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:58,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-08-22 05:29:58,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:58,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616711910] [2020-08-22 05:29:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:58,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:58,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616711910] [2020-08-22 05:29:58,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:29:58,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:29:58,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988263785] [2020-08-22 05:29:58,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:29:58,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:58,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:29:58,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:29:58,550 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand 6 states. [2020-08-22 05:29:58,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:58,749 INFO L93 Difference]: Finished difference Result 353 states and 426 transitions. [2020-08-22 05:29:58,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 05:29:58,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-08-22 05:29:58,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:58,753 INFO L225 Difference]: With dead ends: 353 [2020-08-22 05:29:58,754 INFO L226 Difference]: Without dead ends: 244 [2020-08-22 05:29:58,754 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 [2020-08-22 05:29:58,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-22 05:29:58,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2020-08-22 05:29:58,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-22 05:29:58,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2020-08-22 05:29:58,767 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 40 [2020-08-22 05:29:58,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:58,767 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2020-08-22 05:29:58,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:29:58,768 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2020-08-22 05:29:58,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 05:29:58,768 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:58,768 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] [2020-08-22 05:29:58,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 05:29:58,769 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]=== [2020-08-22 05:29:58,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:58,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-08-22 05:29:58,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:58,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548946887] [2020-08-22 05:29:58,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:59,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:29:59,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548946887] [2020-08-22 05:29:59,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:29:59,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:29:59,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938003735] [2020-08-22 05:29:59,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:29:59,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:29:59,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:29:59,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:29:59,049 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand 10 states. [2020-08-22 05:29:59,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:59,732 INFO L93 Difference]: Finished difference Result 441 states and 526 transitions. [2020-08-22 05:29:59,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 05:29:59,732 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-22 05:29:59,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:59,735 INFO L225 Difference]: With dead ends: 441 [2020-08-22 05:29:59,735 INFO L226 Difference]: Without dead ends: 349 [2020-08-22 05:29:59,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:29:59,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-22 05:29:59,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 239. [2020-08-22 05:29:59,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-22 05:29:59,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2020-08-22 05:29:59,751 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 40 [2020-08-22 05:29:59,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:59,751 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2020-08-22 05:29:59,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:29:59,752 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2020-08-22 05:29:59,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 05:29:59,752 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:59,753 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] [2020-08-22 05:29:59,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 05:29:59,753 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]=== [2020-08-22 05:29:59,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:59,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-08-22 05:29:59,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:59,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597293029] [2020-08-22 05:29:59,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:29:59,797 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:29:59,797 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:29:59,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-22 05:29:59,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:29:59 BoogieIcfgContainer [2020-08-22 05:29:59,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:29:59,852 INFO L168 Benchmark]: Toolchain (without parser) took 11499.52 ms. Allocated memory was 137.9 MB in the beginning and 360.7 MB in the end (delta: 222.8 MB). Free memory was 99.4 MB in the beginning and 261.9 MB in the end (delta: -162.5 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. [2020-08-22 05:29:59,853 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 05:29:59,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.96 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 99.2 MB in the beginning and 166.3 MB in the end (delta: -67.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-22 05:29:59,854 INFO L168 Benchmark]: Boogie Preprocessor took 76.40 ms. Allocated memory is still 200.3 MB. Free memory was 166.3 MB in the beginning and 163.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-22 05:29:59,855 INFO L168 Benchmark]: RCFGBuilder took 736.95 ms. Allocated memory is still 200.3 MB. Free memory was 162.8 MB in the beginning and 107.4 MB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2020-08-22 05:29:59,855 INFO L168 Benchmark]: TraceAbstraction took 9974.97 ms. Allocated memory was 200.3 MB in the beginning and 360.7 MB in the end (delta: 160.4 MB). Free memory was 107.4 MB in the beginning and 261.9 MB in the end (delta: -154.6 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB. [2020-08-22 05:29:59,858 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 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 705.96 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 99.2 MB in the beginning and 166.3 MB in the end (delta: -67.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.40 ms. Allocated memory is still 200.3 MB. Free memory was 166.3 MB in the beginning and 163.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 736.95 ms. Allocated memory is still 200.3 MB. Free memory was 162.8 MB in the beginning and 107.4 MB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9974.97 ms. Allocated memory was 200.3 MB in the beginning and 360.7 MB in the end (delta: 160.4 MB). Free memory was 107.4 MB in the beginning and 261.9 MB in the end (delta: -154.6 MB). Peak memory consumption was 5.9 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: 9.8s, OverallIterations: 24, TraceHistogramMax: 2, AutomataDifference: 6.9s, 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, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.1s 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, 1.7s 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...