/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:10:04,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:10:04,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:10:04,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:10:04,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:10:04,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:10:04,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:10:04,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:10:04,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:10:04,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:10:04,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:10:04,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:10:04,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:10:04,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:10:04,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:10:04,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:10:04,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:10:04,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:10:04,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:10:05,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:10:05,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:10:05,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:10:05,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:10:05,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:10:05,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:10:05,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:10:05,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:10:05,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:10:05,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:10:05,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:10:05,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:10:05,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:10:05,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:10:05,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:10:05,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:10:05,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:10:05,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:10:05,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:10:05,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:10:05,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:10:05,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:10:05,065 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 [2020-10-29 09:10:05,112 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:10:05,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:10:05,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:10:05,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:10:05,117 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:10:05,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:10:05,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:10:05,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:10:05,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:10:05,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:10:05,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:10:05,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:10:05,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:10:05,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:10:05,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:10:05,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:10:05,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:10:05,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:10:05,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:10:05,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:10:05,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:10:05,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:10:05,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:10:05,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:10:05,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:10:05,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:10:05,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:10:05,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:10:05,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:10:05,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:10:05,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:10:05,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:10:05,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:10:05,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:10:05,566 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:10:05,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-10-29 09:10:05,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d3bbb984/7951434fd6de4eddb68d11bc7b825d18/FLAG0dbb9792d [2020-10-29 09:10:06,341 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:10:06,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-10-29 09:10:06,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d3bbb984/7951434fd6de4eddb68d11bc7b825d18/FLAG0dbb9792d [2020-10-29 09:10:06,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d3bbb984/7951434fd6de4eddb68d11bc7b825d18 [2020-10-29 09:10:06,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:10:06,603 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:10:06,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:10:06,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:10:06,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:10:06,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:10:06" (1/1) ... [2020-10-29 09:10:06,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74776b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:06, skipping insertion in model container [2020-10-29 09:10:06,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:10:06" (1/1) ... [2020-10-29 09:10:06,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:10:06,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:10:07,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:10:07,041 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:10:07,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:10:07,189 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:10:07,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:07 WrapperNode [2020-10-29 09:10:07,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:10:07,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:10:07,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:10:07,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:10:07,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:07" (1/1) ... [2020-10-29 09:10:07,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:07" (1/1) ... [2020-10-29 09:10:07,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:07" (1/1) ... [2020-10-29 09:10:07,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:07" (1/1) ... [2020-10-29 09:10:07,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:07" (1/1) ... [2020-10-29 09:10:07,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:07" (1/1) ... [2020-10-29 09:10:07,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:07" (1/1) ... [2020-10-29 09:10:07,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:10:07,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:10:07,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:10:07,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:10:07,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:10:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:10:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:10:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:10:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:10:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:10:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:10:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:10:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:10:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:10:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:10:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:10:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:10:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:10:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:10:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:10:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:10:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:10:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:10:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:10:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:10:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:10:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:10:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:10:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:10:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:10:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:10:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:10:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:10:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:10:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:10:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:10:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:10:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:10:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:10:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:10:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:10:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:10:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:10:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:10:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:10:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:10:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:10:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:10:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:10:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:10:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:10:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:10:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:10:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:10:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:10:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:10:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:10:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:10:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:10:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:10:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:10:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:10:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:10:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:10:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:10:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:10:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:10:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:10:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:10:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:10:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:10:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:10:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:10:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:10:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:10:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:10:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:10:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:10:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:10:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:10:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:10:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:10:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:10:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:10:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:10:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:10:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:10:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:10:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:10:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:10:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:10:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:10:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:10:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:10:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:10:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:10:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:10:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:10:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:10:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:10:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:10:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:10:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:10:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:10:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:10:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:10:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:10:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:10:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:10:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:10:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:10:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:10:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:10:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:10:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:10:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:10:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:10:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:10:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:10:07,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:10:07,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:10:07,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:10:07,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:10:07,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:10:07,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:10:07,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:10:07,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:10:07,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:10:08,144 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:10:08,145 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-10-29 09:10:08,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:10:08 BoogieIcfgContainer [2020-10-29 09:10:08,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:10:08,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:10:08,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:10:08,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:10:08,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:10:06" (1/3) ... [2020-10-29 09:10:08,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3aa8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:10:08, skipping insertion in model container [2020-10-29 09:10:08,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:07" (2/3) ... [2020-10-29 09:10:08,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3aa8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:10:08, skipping insertion in model container [2020-10-29 09:10:08,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:10:08" (3/3) ... [2020-10-29 09:10:08,157 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-10-29 09:10:08,170 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:10:08,175 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:10:08,190 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:10:08,216 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:10:08,216 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:10:08,217 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:10:08,217 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:10:08,217 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:10:08,217 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:10:08,217 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:10:08,217 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:10:08,235 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-10-29 09:10:08,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 09:10:08,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:08,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:08,242 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:08,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:08,249 INFO L82 PathProgramCache]: Analyzing trace with hash 444257067, now seen corresponding path program 1 times [2020-10-29 09:10:08,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:08,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698163783] [2020-10-29 09:10:08,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:08,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:08,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:08,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:08,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:10:08,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:08,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-29 09:10:08,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:08,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:10:08,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:08,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 09:10:08,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 09:10:09,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:09,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:09,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:09,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:09,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:09,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:10:09,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:09,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:09,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:09,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:09,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-10-29 09:10:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:09,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698163783] [2020-10-29 09:10:09,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:09,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:10:09,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531470167] [2020-10-29 09:10:09,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:10:09,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:09,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:10:09,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:10:09,158 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 5 states. [2020-10-29 09:10:09,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:09,500 INFO L93 Difference]: Finished difference Result 106 states and 186 transitions. [2020-10-29 09:10:09,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:10:09,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-29 09:10:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:09,512 INFO L225 Difference]: With dead ends: 106 [2020-10-29 09:10:09,512 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 09:10:09,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:09,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 09:10:09,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-10-29 09:10:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 09:10:09,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-29 09:10:09,564 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 12 [2020-10-29 09:10:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:09,565 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-29 09:10:09,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:10:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-29 09:10:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-29 09:10:09,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:09,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:09,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:10:09,567 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:09,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:09,568 INFO L82 PathProgramCache]: Analyzing trace with hash 541512391, now seen corresponding path program 1 times [2020-10-29 09:10:09,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:09,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302590582] [2020-10-29 09:10:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:09,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:09,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:09,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:10:09,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:09,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 09:10:09,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:09,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:10:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 09:10:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 09:10:09,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:09,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:09,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:09,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:09,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:09,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:09,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:10:09,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:09,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:09,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:09,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302590582] [2020-10-29 09:10:09,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:09,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:10:09,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946821187] [2020-10-29 09:10:09,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:10:09,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:09,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:10:09,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:10:09,864 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 5 states. [2020-10-29 09:10:10,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:10,062 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-10-29 09:10:10,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:10:10,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-29 09:10:10,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:10,064 INFO L225 Difference]: With dead ends: 43 [2020-10-29 09:10:10,064 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 09:10:10,065 INFO L677 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 [2020-10-29 09:10:10,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 09:10:10,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-29 09:10:10,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 09:10:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-29 09:10:10,074 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 14 [2020-10-29 09:10:10,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:10,074 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-29 09:10:10,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:10:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-10-29 09:10:10,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 09:10:10,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:10,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:10,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:10:10,076 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:10,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:10,077 INFO L82 PathProgramCache]: Analyzing trace with hash -38373523, now seen corresponding path program 1 times [2020-10-29 09:10:10,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:10,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82113057] [2020-10-29 09:10:10,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:10,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:10,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:10,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 09:10:10,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:10,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 09:10:10,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:10,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:10:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:10:10,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:10,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:10,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:10,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:10,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:10,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:10,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:10:10,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:10,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:10,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:10,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82113057] [2020-10-29 09:10:10,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:10,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:10:10,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281265830] [2020-10-29 09:10:10,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:10:10,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:10,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:10:10,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:10,407 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 6 states. [2020-10-29 09:10:10,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:10,736 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-10-29 09:10:10,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:10:10,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-29 09:10:10,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:10,738 INFO L225 Difference]: With dead ends: 64 [2020-10-29 09:10:10,738 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 09:10:10,739 INFO L677 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 [2020-10-29 09:10:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 09:10:10,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2020-10-29 09:10:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 09:10:10,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-10-29 09:10:10,749 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 16 [2020-10-29 09:10:10,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:10,749 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-10-29 09:10:10,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:10:10,750 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-10-29 09:10:10,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 09:10:10,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:10,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:10,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:10:10,751 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:10,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:10,752 INFO L82 PathProgramCache]: Analyzing trace with hash -575459649, now seen corresponding path program 1 times [2020-10-29 09:10:10,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:10,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974913413] [2020-10-29 09:10:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:10,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:10,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:10,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:10:10,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:10,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 09:10:10,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:10,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:10:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:10:10,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:10:10,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:11,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:11,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:11,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:11,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:11,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:11,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:10:11,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:11,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:11,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:11,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:11,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974913413] [2020-10-29 09:10:11,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:11,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:10:11,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388639004] [2020-10-29 09:10:11,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:10:11,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:11,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:10:11,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:10:11,089 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 5 states. [2020-10-29 09:10:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:11,343 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-10-29 09:10:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:10:11,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-29 09:10:11,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:11,345 INFO L225 Difference]: With dead ends: 49 [2020-10-29 09:10:11,345 INFO L226 Difference]: Without dead ends: 45 [2020-10-29 09:10:11,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-29 09:10:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-29 09:10:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 09:10:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-29 09:10:11,353 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 17 [2020-10-29 09:10:11,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:11,354 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-29 09:10:11,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:10:11,354 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-29 09:10:11,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 09:10:11,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:11,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:11,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:10:11,356 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:11,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:11,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1021377268, now seen corresponding path program 1 times [2020-10-29 09:10:11,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:11,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672750976] [2020-10-29 09:10:11,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:11,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:11,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:11,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 09:10:11,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:11,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 09:10:11,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:11,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:11,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:10:11,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:11,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:10:11,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:11,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:11,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:11,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:11,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:11,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:11,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:10:11,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:11,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:11,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:11,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672750976] [2020-10-29 09:10:11,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:11,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:10:11,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59468712] [2020-10-29 09:10:11,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:10:11,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:11,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:10:11,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:10:11,566 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-10-29 09:10:11,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:11,704 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-10-29 09:10:11,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:10:11,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-29 09:10:11,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:11,705 INFO L225 Difference]: With dead ends: 48 [2020-10-29 09:10:11,705 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 09:10:11,706 INFO L677 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 [2020-10-29 09:10:11,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 09:10:11,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-29 09:10:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 09:10:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-29 09:10:11,713 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 19 [2020-10-29 09:10:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:11,714 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-29 09:10:11,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:10:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-29 09:10:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 09:10:11,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:11,715 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] [2020-10-29 09:10:11,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:10:11,716 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:11,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:11,716 INFO L82 PathProgramCache]: Analyzing trace with hash -605625927, now seen corresponding path program 1 times [2020-10-29 09:10:11,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:11,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436967331] [2020-10-29 09:10:11,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:11,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:11,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:12,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:12,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 09:10:12,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:12,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-29 09:10:12,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:12,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:12,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:10:12,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:12,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:10:12,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:12,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:12,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:12,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:12,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:12,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:10:12,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:12,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:12,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:12,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:12,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:12,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436967331] [2020-10-29 09:10:12,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:12,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:10:12,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207250743] [2020-10-29 09:10:12,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:10:12,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:12,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:10:12,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:12,171 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 6 states. [2020-10-29 09:10:12,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:12,433 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2020-10-29 09:10:12,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:10:12,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-29 09:10:12,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:12,435 INFO L225 Difference]: With dead ends: 71 [2020-10-29 09:10:12,435 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 09:10:12,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:12,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 09:10:12,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 47. [2020-10-29 09:10:12,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 09:10:12,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-10-29 09:10:12,448 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 20 [2020-10-29 09:10:12,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:12,448 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-10-29 09:10:12,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:10:12,449 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-10-29 09:10:12,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:10:12,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:12,450 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] [2020-10-29 09:10:12,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:10:12,450 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:12,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:12,451 INFO L82 PathProgramCache]: Analyzing trace with hash 727972317, now seen corresponding path program 1 times [2020-10-29 09:10:12,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:12,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710845023] [2020-10-29 09:10:12,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:12,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:12,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:12,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:12,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:10:12,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:12,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-29 09:10:12,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:12,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:10:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:10:12,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:12,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:12,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:12,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:12,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:12,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:12,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:10:12,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:12,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:12,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:12,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710845023] [2020-10-29 09:10:12,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:12,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 09:10:12,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791382043] [2020-10-29 09:10:12,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:10:12,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:12,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:10:12,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:12,816 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 6 states. [2020-10-29 09:10:13,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:13,087 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-29 09:10:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:10:13,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-29 09:10:13,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:13,089 INFO L225 Difference]: With dead ends: 62 [2020-10-29 09:10:13,089 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 09:10:13,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:13,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 09:10:13,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-29 09:10:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 09:10:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-29 09:10:13,095 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 23 [2020-10-29 09:10:13,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:13,096 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-29 09:10:13,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:10:13,096 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-29 09:10:13,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:10:13,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:13,097 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] [2020-10-29 09:10:13,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:10:13,098 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:13,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:13,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1402037848, now seen corresponding path program 1 times [2020-10-29 09:10:13,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:13,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131852327] [2020-10-29 09:10:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:13,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:13,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:13,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:10:13,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:13,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-29 09:10:13,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:13,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:10:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:10:13,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:13,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:13,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:13,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:13,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:13,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:10:13,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:13,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:13,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131852327] [2020-10-29 09:10:13,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:13,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:10:13,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925336825] [2020-10-29 09:10:13,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:10:13,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:13,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:10:13,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:13,533 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 8 states. [2020-10-29 09:10:13,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:13,992 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2020-10-29 09:10:13,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:10:13,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-29 09:10:13,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:13,994 INFO L225 Difference]: With dead ends: 76 [2020-10-29 09:10:13,994 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 09:10:13,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:10:13,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 09:10:14,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2020-10-29 09:10:14,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 09:10:14,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-10-29 09:10:14,017 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 27 [2020-10-29 09:10:14,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:14,017 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-10-29 09:10:14,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:10:14,017 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-10-29 09:10:14,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:10:14,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:14,019 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] [2020-10-29 09:10:14,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:10:14,020 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:14,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:14,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1203985706, now seen corresponding path program 1 times [2020-10-29 09:10:14,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:14,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231313287] [2020-10-29 09:10:14,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:14,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:14,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:14,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:10:14,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:14,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-29 09:10:14,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:14,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:10:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:10:14,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:14,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:14,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:14,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:14,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:14,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:10:14,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:14,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:14,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:14,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:14,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231313287] [2020-10-29 09:10:14,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:14,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:10:14,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583133107] [2020-10-29 09:10:14,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:10:14,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:14,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:10:14,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:14,517 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 8 states. [2020-10-29 09:10:14,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:14,993 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-10-29 09:10:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:10:14,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-29 09:10:14,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:14,994 INFO L225 Difference]: With dead ends: 61 [2020-10-29 09:10:14,994 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 09:10:14,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:10:14,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 09:10:15,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 38. [2020-10-29 09:10:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 09:10:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-29 09:10:15,001 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2020-10-29 09:10:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:15,001 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-29 09:10:15,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:10:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-29 09:10:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:10:15,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:15,002 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] [2020-10-29 09:10:15,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:10:15,003 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:15,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:15,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1358786164, now seen corresponding path program 1 times [2020-10-29 09:10:15,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:15,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410674553] [2020-10-29 09:10:15,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:15,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:15,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:15,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:15,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:10:15,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:10:15,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-29 09:10:15,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:15,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:10:15,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:15,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:10:15,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:16,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:16,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:16,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:16,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:16,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:16,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:10:16,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:16,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:16,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:16,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:16,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:16,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:16,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410674553] [2020-10-29 09:10:16,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:16,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:10:16,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60596551] [2020-10-29 09:10:16,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:10:16,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:16,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:10:16,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:16,257 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 8 states. [2020-10-29 09:10:16,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:16,647 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-10-29 09:10:16,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:10:16,648 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-29 09:10:16,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:16,649 INFO L225 Difference]: With dead ends: 81 [2020-10-29 09:10:16,649 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 09:10:16,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:10:16,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 09:10:16,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2020-10-29 09:10:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 09:10:16,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-10-29 09:10:16,656 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 31 [2020-10-29 09:10:16,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:16,657 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-10-29 09:10:16,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:10:16,657 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-10-29 09:10:16,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:10:16,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:16,658 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] [2020-10-29 09:10:16,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:10:16,659 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:16,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:16,659 INFO L82 PathProgramCache]: Analyzing trace with hash -446652170, now seen corresponding path program 1 times [2020-10-29 09:10:16,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:16,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181678854] [2020-10-29 09:10:16,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:16,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:16,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:17,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:17,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:10:17,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:10:17,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1150 [2020-10-29 09:10:17,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:17,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:17,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:10:17,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:17,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:10:17,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:18,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:18,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:18,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:18,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:18,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:18,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:10:18,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:18,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:18,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:18,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:18,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181678854] [2020-10-29 09:10:18,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:18,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:10:18,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805287371] [2020-10-29 09:10:18,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:10:18,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:18,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:10:18,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:18,197 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 8 states. [2020-10-29 09:10:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:18,645 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2020-10-29 09:10:18,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:10:18,646 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-29 09:10:18,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:18,647 INFO L225 Difference]: With dead ends: 100 [2020-10-29 09:10:18,647 INFO L226 Difference]: Without dead ends: 87 [2020-10-29 09:10:18,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:10:18,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-29 09:10:18,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 68. [2020-10-29 09:10:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 09:10:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-10-29 09:10:18,655 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 31 [2020-10-29 09:10:18,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:18,655 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-10-29 09:10:18,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:10:18,656 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-10-29 09:10:18,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:10:18,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:18,657 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:10:18,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:10:18,657 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:18,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:18,658 INFO L82 PathProgramCache]: Analyzing trace with hash -695799998, now seen corresponding path program 1 times [2020-10-29 09:10:18,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:18,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564949196] [2020-10-29 09:10:18,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:18,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:18,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:10:18,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-29 09:10:18,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:18,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:10:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:10:18,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:19,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:19,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:19,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:19,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:19,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:19,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:10:19,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:19,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:19,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:19,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564949196] [2020-10-29 09:10:19,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:19,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:10:19,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498114630] [2020-10-29 09:10:19,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:10:19,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:19,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:10:19,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:10:19,267 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 9 states. [2020-10-29 09:10:19,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:19,945 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-10-29 09:10:19,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:10:19,945 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-29 09:10:19,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:19,947 INFO L225 Difference]: With dead ends: 103 [2020-10-29 09:10:19,947 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 09:10:19,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:10:19,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 09:10:19,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 77. [2020-10-29 09:10:19,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 09:10:19,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-10-29 09:10:19,956 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 34 [2020-10-29 09:10:19,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:19,956 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-10-29 09:10:19,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:10:19,957 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-10-29 09:10:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:10:19,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:19,958 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:10:19,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:10:19,958 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:19,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:19,959 INFO L82 PathProgramCache]: Analyzing trace with hash -633760384, now seen corresponding path program 1 times [2020-10-29 09:10:19,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:19,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946085276] [2020-10-29 09:10:19,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:20,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:20,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:20,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:10:20,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:20,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-29 09:10:20,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:20,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:10:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:10:20,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:20,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:20,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:20,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:20,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:20,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:20,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:20,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:20,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:20,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:20,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946085276] [2020-10-29 09:10:20,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:20,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:10:20,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340868701] [2020-10-29 09:10:20,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:10:20,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:20,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:10:20,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:10:20,541 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 9 states. [2020-10-29 09:10:21,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:21,400 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2020-10-29 09:10:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:10:21,401 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-29 09:10:21,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:21,402 INFO L225 Difference]: With dead ends: 125 [2020-10-29 09:10:21,404 INFO L226 Difference]: Without dead ends: 121 [2020-10-29 09:10:21,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:10:21,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-29 09:10:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2020-10-29 09:10:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 09:10:21,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2020-10-29 09:10:21,422 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 34 [2020-10-29 09:10:21,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:21,423 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2020-10-29 09:10:21,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:10:21,423 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2020-10-29 09:10:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 09:10:21,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:21,426 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:21,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:10:21,427 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:21,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:21,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1293216844, now seen corresponding path program 2 times [2020-10-29 09:10:21,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:21,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626471341] [2020-10-29 09:10:21,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:21,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:22,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:22,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:10:22,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:22,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-29 09:10:22,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:22,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:22,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:10:22,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:22,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:10:22,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:22,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:22,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:22,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:22,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:22,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:22,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:22,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:22,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:22,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:22,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:22,422 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:22,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626471341] [2020-10-29 09:10:22,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:22,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:10:22,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124005553] [2020-10-29 09:10:22,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:10:22,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:22,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:10:22,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:10:22,425 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 9 states. [2020-10-29 09:10:23,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:23,026 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2020-10-29 09:10:23,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:10:23,027 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-29 09:10:23,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:23,029 INFO L225 Difference]: With dead ends: 116 [2020-10-29 09:10:23,029 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 09:10:23,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:10:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 09:10:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-29 09:10:23,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 09:10:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-10-29 09:10:23,041 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 37 [2020-10-29 09:10:23,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:23,041 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-10-29 09:10:23,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:10:23,041 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-10-29 09:10:23,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 09:10:23,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:23,046 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:23,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:10:23,048 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:23,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:23,048 INFO L82 PathProgramCache]: Analyzing trace with hash -2057975726, now seen corresponding path program 1 times [2020-10-29 09:10:23,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:23,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975355061] [2020-10-29 09:10:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:10:23,080 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:10:23,080 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:10:23,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 09:10:23,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:10:23 BoogieIcfgContainer [2020-10-29 09:10:23,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:10:23,116 INFO L168 Benchmark]: Toolchain (without parser) took 16515.86 ms. Allocated memory was 151.0 MB in the beginning and 324.0 MB in the end (delta: 173.0 MB). Free memory was 133.1 MB in the beginning and 223.7 MB in the end (delta: -90.6 MB). Peak memory consumption was 82.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:23,116 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:10:23,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.12 ms. Allocated memory is still 151.0 MB. Free memory was 132.5 MB in the beginning and 122.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:23,119 INFO L168 Benchmark]: Boogie Preprocessor took 84.59 ms. Allocated memory is still 151.0 MB. Free memory was 122.1 MB in the beginning and 119.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:23,132 INFO L168 Benchmark]: RCFGBuilder took 867.67 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 119.1 MB in the beginning and 145.1 MB in the end (delta: -26.0 MB). Peak memory consumption was 36.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:23,133 INFO L168 Benchmark]: TraceAbstraction took 14963.54 ms. Allocated memory was 181.4 MB in the beginning and 324.0 MB in the end (delta: 142.6 MB). Free memory was 144.6 MB in the beginning and 223.7 MB in the end (delta: -79.2 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:23,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 585.12 ms. Allocated memory is still 151.0 MB. Free memory was 132.5 MB in the beginning and 122.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 84.59 ms. Allocated memory is still 151.0 MB. Free memory was 122.1 MB in the beginning and 119.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 867.67 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 119.1 MB in the beginning and 145.1 MB in the end (delta: -26.0 MB). Peak memory consumption was 36.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14963.54 ms. Allocated memory was 181.4 MB in the beginning and 324.0 MB in the end (delta: 142.6 MB). Free memory was 144.6 MB in the beginning and 223.7 MB in the end (delta: -79.2 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); [L999] null->next = ((void*)0) [L1000] null->prev = ((void*)0) [L1001] null->colour = BLACK [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); [L1004] list->next = null [L1005] list->prev = null [L1006] list->colour = BLACK [L1008] struct TSLL* end = list; [L1011] COND TRUE __VERIFIER_nondet_int() [L1014] end->next = malloc(sizeof(struct TSLL)) [L1015] EXPR end->next [L1015] end->next->prev = end [L1016] EXPR end->next [L1016] end = end->next [L1017] end->next = null [L1019] COND FALSE !(__VERIFIER_nondet_int()) [L1025] end->colour = RED [L1026] end->next = malloc(sizeof(struct TSLL)) [L1027] EXPR end->next [L1027] end->next->prev = end [L1028] EXPR end->next [L1028] end = end->next [L1029] end->next = null [L1030] end->colour = BLACK [L1032] EXPR end->colour [L1032] COND FALSE !(!(BLACK == end->colour)) [L1033] EXPR end->next [L1033] COND FALSE !(!(null == end->next)) [L1034] COND FALSE !(!(null != end)) [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list [L1041] COND FALSE !(!(null != end)) [L1042] EXPR end->colour [L1042] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE null != end [L1045] EXPR end->colour [L1045] COND FALSE !(RED == end->colour) [L1052] EXPR end->next [L1052] end = end->next [L1043] COND TRUE null != end [L1045] EXPR end->colour [L1045] COND TRUE RED == end->colour [L1047] EXPR end->next [L1047] end = end->next [L1048] COND FALSE !(!(null != end)) [L1049] EXPR end->colour [L1049] COND TRUE !(BLACK != end->colour) [L1049] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-rb-sentinel-1.c", 14, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.8s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 443 SDtfs, 604 SDslu, 1164 SDs, 0 SdLazy, 1808 SolverSat, 215 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 29 SyntacticMatches, 14 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 132 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 379 NumberOfCodeBlocks, 379 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 104147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 3/27 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...