/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:27:06,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:27:06,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:27:06,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:27:06,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:27:06,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:27:06,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:27:06,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:27:06,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:27:06,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:27:06,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:27:06,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:27:06,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:27:06,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:27:06,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:27:06,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:27:06,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:27:06,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:27:06,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:27:06,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:27:06,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:27:06,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:27:06,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:27:06,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:27:06,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:27:06,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:27:06,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:27:06,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:27:06,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:27:06,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:27:06,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:27:06,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:27:06,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:27:06,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:27:06,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:27:06,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:27:06,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:27:06,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:27:06,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:27:06,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:27:06,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:27:06,681 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:27:06,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:27:06,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:27:06,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:27:06,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:27:06,742 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:27:06,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:27:06,742 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:27:06,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:27:06,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:27:06,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:27:06,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:27:06,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:27:06,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:27:06,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:27:06,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:27:06,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:27:06,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:27:06,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:27:06,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:27:06,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:27:06,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:27:06,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:27:06,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:27:06,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:27:06,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:27:06,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:27:06,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:27:06,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:27:06,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:27:06,748 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:27:07,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:27:07,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:27:07,260 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:27:07,262 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:27:07,263 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:27:07,265 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-21 12:27:07,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5f83a516/ea6bc027cc2349e6ac4ed39c76d96593/FLAG725778048 [2020-09-21 12:27:07,971 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:27:07,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-21 12:27:07,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5f83a516/ea6bc027cc2349e6ac4ed39c76d96593/FLAG725778048 [2020-09-21 12:27:08,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5f83a516/ea6bc027cc2349e6ac4ed39c76d96593 [2020-09-21 12:27:08,253 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:27:08,258 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:27:08,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:27:08,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:27:08,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:27:08,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:27:08" (1/1) ... [2020-09-21 12:27:08,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8099dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:08, skipping insertion in model container [2020-09-21 12:27:08,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:27:08" (1/1) ... [2020-09-21 12:27:08,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:27:08,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:27:08,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:27:08,834 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:27:08,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:27:08,971 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:27:08,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:08 WrapperNode [2020-09-21 12:27:08,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:27:08,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:27:08,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:27:08,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:27:08,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:08" (1/1) ... [2020-09-21 12:27:08,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:08" (1/1) ... [2020-09-21 12:27:09,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:08" (1/1) ... [2020-09-21 12:27:09,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:08" (1/1) ... [2020-09-21 12:27:09,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:08" (1/1) ... [2020-09-21 12:27:09,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:08" (1/1) ... [2020-09-21 12:27:09,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:08" (1/1) ... [2020-09-21 12:27:09,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:27:09,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:27:09,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:27:09,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:27:09,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:27:09,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:27:09,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:27:09,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:27:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 12:27:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 12:27:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 12:27:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 12:27:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 12:27:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 12:27:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 12:27:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 12:27:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 12:27:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 12:27:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 12:27:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 12:27:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 12:27:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 12:27:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 12:27:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 12:27:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 12:27:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 12:27:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 12:27:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 12:27:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 12:27:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 12:27:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 12:27:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 12:27:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 12:27:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 12:27:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 12:27:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 12:27:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 12:27:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 12:27:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 12:27:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 12:27:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 12:27:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 12:27:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 12:27:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 12:27:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 12:27:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 12:27:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 12:27:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 12:27:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 12:27:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 12:27:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 12:27:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 12:27:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 12:27:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 12:27:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 12:27:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 12:27:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 12:27:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 12:27:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:27:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 12:27:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 12:27:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:27:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 12:27:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 12:27:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 12:27:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 12:27:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-21 12:27:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:27:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 12:27:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-21 12:27:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 12:27:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:27:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-21 12:27:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 12:27:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 12:27:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 12:27:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 12:27:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 12:27:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 12:27:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 12:27:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 12:27:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 12:27:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 12:27:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 12:27:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 12:27:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 12:27:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 12:27:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 12:27:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 12:27:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 12:27:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 12:27:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 12:27:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 12:27:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 12:27:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 12:27:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 12:27:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 12:27:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 12:27:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 12:27:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 12:27:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 12:27:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 12:27:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 12:27:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 12:27:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 12:27:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 12:27:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 12:27:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 12:27:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 12:27:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-21 12:27:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 12:27:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:27:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:27:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:27:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:27:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:27:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:27:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:27:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:27:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:27:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:27:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:27:09,872 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:27:09,872 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-09-21 12:27:09,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:27:09 BoogieIcfgContainer [2020-09-21 12:27:09,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:27:09,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:27:09,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:27:09,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:27:09,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:27:08" (1/3) ... [2020-09-21 12:27:09,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29dfd4eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:27:09, skipping insertion in model container [2020-09-21 12:27:09,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:08" (2/3) ... [2020-09-21 12:27:09,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29dfd4eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:27:09, skipping insertion in model container [2020-09-21 12:27:09,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:27:09" (3/3) ... [2020-09-21 12:27:09,890 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-09-21 12:27:09,902 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:27:09,912 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-09-21 12:27:09,934 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-21 12:27:09,965 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:27:09,965 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:27:09,965 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:27:09,965 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:27:09,965 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:27:09,966 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:27:09,966 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:27:09,966 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:27:09,992 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-09-21 12:27:09,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-21 12:27:10,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:10,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:10,002 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:10,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:10,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1255802584, now seen corresponding path program 1 times [2020-09-21 12:27:10,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:10,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633468207] [2020-09-21 12:27:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:10,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:10,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:10,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:10,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:27:10,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-09-21 12:27:10,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:27:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:10,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-21 12:27:10,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:10,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:10,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:10,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:10,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:10,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:27:10,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:10,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633468207] [2020-09-21 12:27:10,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:10,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:27:10,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676501438] [2020-09-21 12:27:10,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:27:10,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:10,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:27:10,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:27:10,782 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-09-21 12:27:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:10,955 INFO L93 Difference]: Finished difference Result 98 states and 156 transitions. [2020-09-21 12:27:10,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:27:10,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-21 12:27:10,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:10,971 INFO L225 Difference]: With dead ends: 98 [2020-09-21 12:27:10,972 INFO L226 Difference]: Without dead ends: 45 [2020-09-21 12:27:10,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:27:11,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-21 12:27:11,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-21 12:27:11,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-21 12:27:11,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-09-21 12:27:11,030 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 10 [2020-09-21 12:27:11,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:11,031 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-09-21 12:27:11,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:27:11,031 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-09-21 12:27:11,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-21 12:27:11,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:11,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:11,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:27:11,033 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:11,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:11,033 INFO L82 PathProgramCache]: Analyzing trace with hash -338068956, now seen corresponding path program 1 times [2020-09-21 12:27:11,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:11,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910972192] [2020-09-21 12:27:11,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:11,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:11,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:11,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:27:11,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:11,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-21 12:27:11,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:27:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:27:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:27:11,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:11,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:11,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:11,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:11,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:11,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:11,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:27:11,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:11,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:11,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:11,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910972192] [2020-09-21 12:27:11,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:11,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:27:11,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235425039] [2020-09-21 12:27:11,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:27:11,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:11,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:27:11,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:11,280 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 5 states. [2020-09-21 12:27:11,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:11,508 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-09-21 12:27:11,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:27:11,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-21 12:27:11,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:11,511 INFO L225 Difference]: With dead ends: 51 [2020-09-21 12:27:11,512 INFO L226 Difference]: Without dead ends: 49 [2020-09-21 12:27:11,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-21 12:27:11,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-09-21 12:27:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-21 12:27:11,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-09-21 12:27:11,531 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 11 [2020-09-21 12:27:11,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:11,535 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-09-21 12:27:11,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:27:11,536 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-09-21 12:27:11,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-21 12:27:11,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:11,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:11,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:27:11,538 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:11,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:11,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1890143313, now seen corresponding path program 1 times [2020-09-21 12:27:11,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:11,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402215308] [2020-09-21 12:27:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:11,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:12,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:12,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:27:12,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:12,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-09-21 12:27:12,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:12,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:27:12,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 12:27:12,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:27:12,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:12,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:12,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:12,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:12,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:12,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:27:12,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:12,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:12,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:12,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402215308] [2020-09-21 12:27:12,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:12,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:27:12,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883382225] [2020-09-21 12:27:12,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:27:12,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:12,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:27:12,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:12,130 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 5 states. [2020-09-21 12:27:12,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:12,342 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-09-21 12:27:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:27:12,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-21 12:27:12,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:12,344 INFO L225 Difference]: With dead ends: 43 [2020-09-21 12:27:12,344 INFO L226 Difference]: Without dead ends: 41 [2020-09-21 12:27:12,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:12,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-21 12:27:12,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-21 12:27:12,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-21 12:27:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-09-21 12:27:12,355 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 12 [2020-09-21 12:27:12,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:12,356 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-09-21 12:27:12,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:27:12,356 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-09-21 12:27:12,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 12:27:12,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:12,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:12,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:27:12,362 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:12,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:12,362 INFO L82 PathProgramCache]: Analyzing trace with hash 290038970, now seen corresponding path program 1 times [2020-09-21 12:27:12,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:12,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112964112] [2020-09-21 12:27:12,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:12,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:12,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:12,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:27:12,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:12,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-21 12:27:12,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:27:12,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:27:12,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:12,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:12,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:12,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:12,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:12,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:12,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:27:12,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:12,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:12,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:12,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:12,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:12,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112964112] [2020-09-21 12:27:12,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:12,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:27:12,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886540649] [2020-09-21 12:27:12,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:27:12,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:12,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:27:12,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:12,652 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 6 states. [2020-09-21 12:27:12,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:12,920 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-09-21 12:27:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:27:12,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-21 12:27:12,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:12,923 INFO L225 Difference]: With dead ends: 66 [2020-09-21 12:27:12,924 INFO L226 Difference]: Without dead ends: 64 [2020-09-21 12:27:12,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:27:12,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-21 12:27:12,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2020-09-21 12:27:12,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-21 12:27:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-21 12:27:12,943 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 14 [2020-09-21 12:27:12,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:12,944 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-21 12:27:12,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:27:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-21 12:27:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 12:27:12,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:12,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:12,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:27:12,947 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:12,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:12,947 INFO L82 PathProgramCache]: Analyzing trace with hash 2060721718, now seen corresponding path program 1 times [2020-09-21 12:27:12,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:12,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500081069] [2020-09-21 12:27:12,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:12,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:13,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:13,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:27:13,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:13,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-21 12:27:13,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:13,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:27:13,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 12:27:13,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:27:13,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:13,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:13,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:13,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:13,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:13,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:27:13,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:13,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:13,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500081069] [2020-09-21 12:27:13,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:13,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:27:13,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853820220] [2020-09-21 12:27:13,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:27:13,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:13,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:27:13,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:13,262 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-09-21 12:27:13,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:13,518 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-09-21 12:27:13,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:27:13,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-21 12:27:13,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:13,521 INFO L225 Difference]: With dead ends: 48 [2020-09-21 12:27:13,521 INFO L226 Difference]: Without dead ends: 46 [2020-09-21 12:27:13,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:13,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-21 12:27:13,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-21 12:27:13,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-21 12:27:13,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-09-21 12:27:13,528 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 15 [2020-09-21 12:27:13,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:13,529 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-09-21 12:27:13,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:27:13,529 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-09-21 12:27:13,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 12:27:13,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:13,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:13,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:27:13,531 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:13,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:13,532 INFO L82 PathProgramCache]: Analyzing trace with hash 373775322, now seen corresponding path program 1 times [2020-09-21 12:27:13,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:13,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034526767] [2020-09-21 12:27:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:13,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:13,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:13,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 12:27:13,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:13,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-21 12:27:13,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:27:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:27:13,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:14,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:14,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:14,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:14,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:14,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:14,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:27:14,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:14,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:14,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:14,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:14,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:14,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034526767] [2020-09-21 12:27:14,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:14,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:27:14,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64095953] [2020-09-21 12:27:14,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:27:14,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:14,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:27:14,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:14,095 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 5 states. [2020-09-21 12:27:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:14,243 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-09-21 12:27:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:27:14,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-21 12:27:14,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:14,245 INFO L225 Difference]: With dead ends: 46 [2020-09-21 12:27:14,245 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 12:27:14,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:14,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 12:27:14,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-21 12:27:14,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-21 12:27:14,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-09-21 12:27:14,252 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2020-09-21 12:27:14,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:14,252 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-09-21 12:27:14,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:27:14,252 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-09-21 12:27:14,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 12:27:14,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:14,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:14,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:27:14,254 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:14,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:14,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1568846049, now seen corresponding path program 1 times [2020-09-21 12:27:14,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:14,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901179700] [2020-09-21 12:27:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:14,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:14,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:14,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:14,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 12:27:14,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:14,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-09-21 12:27:14,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:14,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:27:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-21 12:27:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:27:14,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:14,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:14,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:14,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:14,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:14,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:14,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:27:14,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:14,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:14,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:15,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901179700] [2020-09-21 12:27:15,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:15,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:27:15,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123841988] [2020-09-21 12:27:15,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:27:15,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:15,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:27:15,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:15,006 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 6 states. [2020-09-21 12:27:15,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:15,288 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-09-21 12:27:15,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:27:15,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-09-21 12:27:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:15,290 INFO L225 Difference]: With dead ends: 59 [2020-09-21 12:27:15,290 INFO L226 Difference]: Without dead ends: 47 [2020-09-21 12:27:15,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:27:15,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-21 12:27:15,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-09-21 12:27:15,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-21 12:27:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-09-21 12:27:15,300 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 18 [2020-09-21 12:27:15,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:15,300 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-09-21 12:27:15,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:27:15,301 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-09-21 12:27:15,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 12:27:15,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:15,303 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] [2020-09-21 12:27:15,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:27:15,304 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:15,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:15,305 INFO L82 PathProgramCache]: Analyzing trace with hash 777661568, now seen corresponding path program 1 times [2020-09-21 12:27:15,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:15,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680139612] [2020-09-21 12:27:15,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:15,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:15,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:15,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:15,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:27:15,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:15,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-21 12:27:15,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:15,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:15,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:27:15,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:27:15,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:15,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:15,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:15,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:15,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:15,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:15,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:27:15,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:15,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:15,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:15,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:15,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:15,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:15,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680139612] [2020-09-21 12:27:15,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:15,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:27:15,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406227791] [2020-09-21 12:27:15,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:27:15,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:15,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:27:15,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:15,755 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 6 states. [2020-09-21 12:27:16,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:16,002 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-09-21 12:27:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:27:16,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-09-21 12:27:16,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:16,004 INFO L225 Difference]: With dead ends: 63 [2020-09-21 12:27:16,004 INFO L226 Difference]: Without dead ends: 41 [2020-09-21 12:27:16,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:27:16,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-21 12:27:16,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-21 12:27:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-21 12:27:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-09-21 12:27:16,013 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 21 [2020-09-21 12:27:16,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:16,013 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-09-21 12:27:16,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:27:16,014 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-09-21 12:27:16,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:27:16,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:16,016 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] [2020-09-21 12:27:16,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:27:16,017 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:16,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:16,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1056872398, now seen corresponding path program 1 times [2020-09-21 12:27:16,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:16,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6886310] [2020-09-21 12:27:16,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:16,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:16,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:16,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 12:27:16,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:16,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-09-21 12:27:16,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:16,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:27:16,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:27:16,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 12:27:16,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:16,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:16,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:16,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:16,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:16,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:16,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:27:16,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:16,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:16,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:16,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6886310] [2020-09-21 12:27:16,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:16,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:27:16,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318350230] [2020-09-21 12:27:16,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:27:16,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:16,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:27:16,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:27:16,868 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 8 states. [2020-09-21 12:27:17,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:17,321 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-21 12:27:17,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:27:17,322 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-21 12:27:17,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:17,323 INFO L225 Difference]: With dead ends: 87 [2020-09-21 12:27:17,323 INFO L226 Difference]: Without dead ends: 85 [2020-09-21 12:27:17,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:27:17,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-21 12:27:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 68. [2020-09-21 12:27:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-21 12:27:17,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2020-09-21 12:27:17,331 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 25 [2020-09-21 12:27:17,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:17,332 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2020-09-21 12:27:17,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:27:17,332 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2020-09-21 12:27:17,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-21 12:27:17,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:17,333 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] [2020-09-21 12:27:17,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:27:17,334 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:17,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:17,334 INFO L82 PathProgramCache]: Analyzing trace with hash -377613816, now seen corresponding path program 1 times [2020-09-21 12:27:17,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:17,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432451936] [2020-09-21 12:27:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:18,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:18,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-21 12:27:18,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:18,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-09-21 12:27:18,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:18,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:27:18,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:27:18,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:27:18,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:18,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:18,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:18,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:18,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:18,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:18,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:27:18,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:18,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:18,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432451936] [2020-09-21 12:27:18,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:18,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:27:18,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439891040] [2020-09-21 12:27:18,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:27:18,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:18,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:27:18,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:27:18,288 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 9 states. [2020-09-21 12:27:18,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:18,983 INFO L93 Difference]: Finished difference Result 126 states and 138 transitions. [2020-09-21 12:27:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:27:18,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-21 12:27:18,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:18,985 INFO L225 Difference]: With dead ends: 126 [2020-09-21 12:27:18,985 INFO L226 Difference]: Without dead ends: 124 [2020-09-21 12:27:18,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:27:18,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-21 12:27:19,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 90. [2020-09-21 12:27:19,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-21 12:27:19,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-09-21 12:27:19,008 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 32 [2020-09-21 12:27:19,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:19,008 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-09-21 12:27:19,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:27:19,009 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-09-21 12:27:19,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-21 12:27:19,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:19,013 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] [2020-09-21 12:27:19,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:27:19,013 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:19,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:19,016 INFO L82 PathProgramCache]: Analyzing trace with hash -243600310, now seen corresponding path program 1 times [2020-09-21 12:27:19,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:19,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144659975] [2020-09-21 12:27:19,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:19,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:19,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:20,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:20,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-21 12:27:20,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:20,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:27:20,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:20,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:27:20,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-21 12:27:20,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:27:20,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:20,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:20,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:20,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:20,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:20,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:20,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:27:20,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:20,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:20,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:20,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:20,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:20,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144659975] [2020-09-21 12:27:20,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:20,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:27:20,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217804129] [2020-09-21 12:27:20,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:27:20,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:20,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:27:20,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:27:20,206 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 9 states. [2020-09-21 12:27:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:20,717 INFO L93 Difference]: Finished difference Result 126 states and 138 transitions. [2020-09-21 12:27:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:27:20,718 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-21 12:27:20,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:20,721 INFO L225 Difference]: With dead ends: 126 [2020-09-21 12:27:20,721 INFO L226 Difference]: Without dead ends: 114 [2020-09-21 12:27:20,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:27:20,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-21 12:27:20,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 99. [2020-09-21 12:27:20,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-21 12:27:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2020-09-21 12:27:20,732 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 32 [2020-09-21 12:27:20,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:20,733 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2020-09-21 12:27:20,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:27:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2020-09-21 12:27:20,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-21 12:27:20,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:20,735 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] [2020-09-21 12:27:20,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:27:20,735 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:20,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:20,736 INFO L82 PathProgramCache]: Analyzing trace with hash 145286649, now seen corresponding path program 2 times [2020-09-21 12:27:20,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:20,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872810296] [2020-09-21 12:27:20,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:20,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:21,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:21,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:21,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:27:21,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:21,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:27:21,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:21,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:27:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:27:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:27:21,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:21,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:21,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:21,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:21,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:21,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:21,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:27:21,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:21,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:21,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872810296] [2020-09-21 12:27:21,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:21,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:27:21,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636570196] [2020-09-21 12:27:21,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:27:21,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:21,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:27:21,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:27:21,920 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 9 states. [2020-09-21 12:27:22,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:22,415 INFO L93 Difference]: Finished difference Result 123 states and 134 transitions. [2020-09-21 12:27:22,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:27:22,416 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-21 12:27:22,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:22,417 INFO L225 Difference]: With dead ends: 123 [2020-09-21 12:27:22,417 INFO L226 Difference]: Without dead ends: 111 [2020-09-21 12:27:22,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:27:22,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-21 12:27:22,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-09-21 12:27:22,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-21 12:27:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2020-09-21 12:27:22,429 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 35 [2020-09-21 12:27:22,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:22,429 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2020-09-21 12:27:22,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:27:22,429 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2020-09-21 12:27:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-21 12:27:22,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:22,433 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] [2020-09-21 12:27:22,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:27:22,433 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:22,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:22,438 INFO L82 PathProgramCache]: Analyzing trace with hash -969799515, now seen corresponding path program 1 times [2020-09-21 12:27:22,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:22,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216583143] [2020-09-21 12:27:22,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:27:22,526 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:27:22,526 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:27:22,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:27:22,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:27:22 BoogieIcfgContainer [2020-09-21 12:27:22,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:27:22,562 INFO L168 Benchmark]: Toolchain (without parser) took 14306.74 ms. Allocated memory was 140.5 MB in the beginning and 331.4 MB in the end (delta: 190.8 MB). Free memory was 102.7 MB in the beginning and 291.1 MB in the end (delta: -188.4 MB). Peak memory consumption was 201.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:27:22,563 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:27:22,564 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.82 ms. Allocated memory was 140.5 MB in the beginning and 206.6 MB in the end (delta: 66.1 MB). Free memory was 102.1 MB in the beginning and 174.1 MB in the end (delta: -72.0 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:27:22,565 INFO L168 Benchmark]: Boogie Preprocessor took 132.38 ms. Allocated memory is still 206.6 MB. Free memory was 174.1 MB in the beginning and 170.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:27:22,565 INFO L168 Benchmark]: RCFGBuilder took 771.37 ms. Allocated memory is still 206.6 MB. Free memory was 170.7 MB in the beginning and 118.2 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:27:22,566 INFO L168 Benchmark]: TraceAbstraction took 12680.68 ms. Allocated memory was 206.6 MB in the beginning and 331.4 MB in the end (delta: 124.8 MB). Free memory was 118.2 MB in the beginning and 291.1 MB in the end (delta: -172.9 MB). Peak memory consumption was 151.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:27:22,569 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 713.82 ms. Allocated memory was 140.5 MB in the beginning and 206.6 MB in the end (delta: 66.1 MB). Free memory was 102.1 MB in the beginning and 174.1 MB in the end (delta: -72.0 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.38 ms. Allocated memory is still 206.6 MB. Free memory was 174.1 MB in the beginning and 170.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 771.37 ms. Allocated memory is still 206.6 MB. Free memory was 170.7 MB in the beginning and 118.2 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12680.68 ms. Allocated memory was 206.6 MB in the beginning and 331.4 MB in the end (delta: 124.8 MB). Free memory was 118.2 MB in the beginning and 291.1 MB in the end (delta: -172.9 MB). Peak memory consumption was 151.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1038]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L987] struct TSLL* null = malloc(sizeof(struct TSLL)); [L988] null->next = ((void*)0) [L989] null->prev = ((void*)0) [L990] null->colour = BLACK [L992] struct TSLL* list = malloc(sizeof(struct TSLL)); [L993] list->next = null [L994] list->prev = null [L995] list->colour = BLACK [L997] struct TSLL* end = list; [L1000] COND TRUE __VERIFIER_nondet_int() [L1003] end->next = malloc(sizeof(struct TSLL)) [L1004] EXPR end->next [L1004] end->next->prev = end [L1005] EXPR end->next [L1005] end = end->next [L1006] end->next = null [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1014] end->colour = RED [L1015] end->next = malloc(sizeof(struct TSLL)) [L1016] EXPR end->next [L1016] end->next->prev = end [L1017] EXPR end->next [L1017] end = end->next [L1018] end->next = null [L1019] end->colour = BLACK [L1021] EXPR end->colour [L1021] COND FALSE !(!(BLACK == end->colour)) [L1022] EXPR end->next [L1022] COND FALSE !(!(null == end->next)) [L1023] COND FALSE !(!(null != end)) [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1026] end = null [L1027] end = list [L1030] COND FALSE !(!(null != end)) [L1031] EXPR end->colour [L1031] COND FALSE !(!(BLACK == end->colour)) [L1032] COND TRUE null != end [L1034] EXPR end->colour [L1034] COND FALSE !(RED == end->colour) [L1041] EXPR end->next [L1041] end = end->next [L1032] COND TRUE null != end [L1034] EXPR end->colour [L1034] COND TRUE RED == end->colour [L1036] EXPR end->next [L1036] end = end->next [L1037] COND FALSE !(!(null != end)) [L1038] EXPR end->colour [L1038] COND TRUE !(BLACK != end->colour) [L1038] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 52 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.5s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 428 SDtfs, 390 SDslu, 1086 SDs, 0 SdLazy, 1529 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=11, 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, 12 MinimizatonAttempts, 101 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 54555 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 6/21 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...