/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:24:21,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:24:21,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:24:21,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:24:21,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:24:21,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:24:21,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:24:21,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:24:21,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:24:21,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:24:21,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:24:21,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:24:21,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:24:21,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:24:21,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:24:21,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:24:21,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:24:21,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:24:21,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:24:21,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:24:21,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:24:21,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:24:21,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:24:21,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:24:21,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:24:21,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:24:21,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:24:21,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:24:21,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:24:21,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:24:21,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:24:21,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:24:21,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:24:21,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:24:21,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:24:21,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:24:21,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:24:21,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:24:21,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:24:21,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:24:21,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:24:21,291 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 [2020-09-24 19:24:21,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:24:21,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:24:21,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:24:21,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:24:21,346 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:24:21,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:24:21,347 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:24:21,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:24:21,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:24:21,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:24:21,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:24:21,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:24:21,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:24:21,349 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:24:21,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:24:21,350 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:24:21,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:24:21,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:24:21,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:24:21,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:24:21,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:24:21,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:24:21,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:24:21,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:24:21,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:24:21,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:24:21,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:24:21,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:24:21,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:24:21,353 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.rcfgbuilder: Size of a code block -> SingleStatement 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; [2020-09-24 19:24:21,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:24:21,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:24:21,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:24:21,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:24:21,891 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:24:21,892 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-24 19:24:21,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c4a0c2bf/9d19aa26d02b4cd3925d83a0981a08d6/FLAGb24c2393e [2020-09-24 19:24:22,718 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:24:22,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-24 19:24:22,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c4a0c2bf/9d19aa26d02b4cd3925d83a0981a08d6/FLAGb24c2393e [2020-09-24 19:24:22,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c4a0c2bf/9d19aa26d02b4cd3925d83a0981a08d6 [2020-09-24 19:24:22,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:24:22,923 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:24:22,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:22,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:24:22,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:24:22,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:22" (1/1) ... [2020-09-24 19:24:22,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af20ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:22, skipping insertion in model container [2020-09-24 19:24:22,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:22" (1/1) ... [2020-09-24 19:24:22,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:24:23,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:24:23,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:23,548 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:24:23,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:23,659 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:24:23,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:23 WrapperNode [2020-09-24 19:24:23,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:23,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:24:23,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:24:23,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:24:23,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:23" (1/1) ... [2020-09-24 19:24:23,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:23" (1/1) ... [2020-09-24 19:24:23,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:23" (1/1) ... [2020-09-24 19:24:23,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:23" (1/1) ... [2020-09-24 19:24:23,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:23" (1/1) ... [2020-09-24 19:24:23,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:23" (1/1) ... [2020-09-24 19:24:23,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:23" (1/1) ... [2020-09-24 19:24:23,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:24:23,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:24:23,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:24:23,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:24:23,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:23" (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 [2020-09-24 19:24:23,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:24:23,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:24:23,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:24:23,813 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 19:24:23,813 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 19:24:23,813 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 19:24:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 19:24:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 19:24:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 19:24:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 19:24:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 19:24:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 19:24:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 19:24:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 19:24:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 19:24:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 19:24:23,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 19:24:23,816 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 19:24:23,816 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 19:24:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 19:24:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 19:24:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 19:24:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 19:24:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 19:24:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 19:24:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 19:24:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 19:24:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 19:24:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 19:24:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 19:24:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 19:24:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 19:24:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 19:24:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 19:24:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 19:24:23,821 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 19:24:23,821 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 19:24:23,821 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 19:24:23,821 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 19:24:23,821 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 19:24:23,821 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 19:24:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 19:24:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 19:24:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 19:24:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 19:24:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 19:24:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 19:24:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 19:24:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 19:24:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 19:24:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 19:24:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 19:24:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 19:24:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 19:24:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 19:24:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 19:24:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 19:24:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 19:24:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 19:24:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 19:24:23,825 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 19:24:23,825 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 19:24:23,825 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 19:24:23,825 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 19:24:23,825 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 19:24:23,825 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 19:24:23,826 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:24:23,826 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 19:24:23,826 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 19:24:23,826 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 19:24:23,826 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 19:24:23,826 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 19:24:23,827 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 19:24:23,827 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 19:24:23,827 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 19:24:23,827 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 19:24:23,827 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 19:24:23,827 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 19:24:23,828 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 19:24:23,828 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 19:24:23,828 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 19:24:23,828 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 19:24:23,828 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 19:24:23,828 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 19:24:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 19:24:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 19:24:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 19:24:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 19:24:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 19:24:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 19:24:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 19:24:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 19:24:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 19:24:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 19:24:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 19:24:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 19:24:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 19:24:23,831 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 19:24:23,831 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 19:24:23,831 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 19:24:23,831 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 19:24:23,831 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 19:24:23,831 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 19:24:23,832 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 19:24:23,832 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 19:24:23,832 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 19:24:23,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:24:23,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:24:23,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:24:23,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 19:24:23,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:24:23,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 19:24:23,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 19:24:23,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:24:23,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:24:23,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:24:23,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:24:24,484 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:24:24,484 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-24 19:24:24,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:24 BoogieIcfgContainer [2020-09-24 19:24:24,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:24:24,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:24:24,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:24:24,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:24:24,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:24:22" (1/3) ... [2020-09-24 19:24:24,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb1c007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:24, skipping insertion in model container [2020-09-24 19:24:24,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:23" (2/3) ... [2020-09-24 19:24:24,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb1c007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:24, skipping insertion in model container [2020-09-24 19:24:24,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:24" (3/3) ... [2020-09-24 19:24:24,500 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-09-24 19:24:24,512 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:24:24,523 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-09-24 19:24:24,545 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-24 19:24:24,578 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:24:24,579 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:24:24,579 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:24:24,579 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:24:24,579 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:24:24,579 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:24:24,579 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:24:24,580 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:24:24,607 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-09-24 19:24:24,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 19:24:24,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:24,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:24,617 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:24,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:24,624 INFO L82 PathProgramCache]: Analyzing trace with hash -159181327, now seen corresponding path program 1 times [2020-09-24 19:24:24,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:24,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465742839] [2020-09-24 19:24:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:24,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:24,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:25,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:25,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 19:24:25,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:25,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 609 [2020-09-24 19:24:25,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:25,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:25,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:24:25,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:25,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:24:25,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:25,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:25,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:25,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:25,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:25,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:24:25,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:25,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:25,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:25,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:25,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:25,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465742839] [2020-09-24 19:24:25,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:25,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:24:25,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576011223] [2020-09-24 19:24:25,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:24:25,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:25,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:24:25,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:24:25,546 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2020-09-24 19:24:25,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:25,773 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2020-09-24 19:24:25,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:24:25,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-24 19:24:25,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:25,788 INFO L225 Difference]: With dead ends: 157 [2020-09-24 19:24:25,788 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 19:24:25,792 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 [2020-09-24 19:24:25,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 19:24:25,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-24 19:24:25,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 19:24:25,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-09-24 19:24:25,840 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 21 [2020-09-24 19:24:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:25,841 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-09-24 19:24:25,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:24:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-09-24 19:24:25,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 19:24:25,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:25,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:25,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:24:25,843 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:25,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:25,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1476818129, now seen corresponding path program 1 times [2020-09-24 19:24:25,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:25,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978284473] [2020-09-24 19:24:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:25,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:26,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:26,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 19:24:26,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:26,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-24 19:24:26,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:24:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:24:26,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:26,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:26,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:26,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:26,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:26,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:26,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:24:26,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:26,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:26,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978284473] [2020-09-24 19:24:26,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:26,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:24:26,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087376273] [2020-09-24 19:24:26,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:24:26,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:26,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:24:26,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:24:26,206 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 8 states. [2020-09-24 19:24:26,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:26,505 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2020-09-24 19:24:26,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:24:26,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-09-24 19:24:26,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:26,507 INFO L225 Difference]: With dead ends: 92 [2020-09-24 19:24:26,508 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 19:24:26,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:24:26,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 19:24:26,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2020-09-24 19:24:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-24 19:24:26,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-09-24 19:24:26,520 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 23 [2020-09-24 19:24:26,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:26,520 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-09-24 19:24:26,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:24:26,521 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-09-24 19:24:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 19:24:26,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:26,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:26,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:24:26,523 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:26,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1518762392, now seen corresponding path program 1 times [2020-09-24 19:24:26,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:26,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081961973] [2020-09-24 19:24:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:26,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:26,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:26,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:24:26,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:26,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-24 19:24:26,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:24:26,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:24:26,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 19:24:26,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:26,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:26,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:26,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:26,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:26,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:26,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:24:26,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:26,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:26,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:26,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:26,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:26,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081961973] [2020-09-24 19:24:26,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:26,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:24:26,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237926874] [2020-09-24 19:24:26,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:24:26,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:26,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:24:26,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:24:26,806 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 6 states. [2020-09-24 19:24:27,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:27,028 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-09-24 19:24:27,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:24:27,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-24 19:24:27,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:27,031 INFO L225 Difference]: With dead ends: 120 [2020-09-24 19:24:27,031 INFO L226 Difference]: Without dead ends: 117 [2020-09-24 19:24:27,031 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 [2020-09-24 19:24:27,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-24 19:24:27,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2020-09-24 19:24:27,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 19:24:27,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-09-24 19:24:27,042 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 27 [2020-09-24 19:24:27,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:27,043 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-09-24 19:24:27,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:24:27,043 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-09-24 19:24:27,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 19:24:27,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:27,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:27,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:24:27,045 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:27,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:27,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2047332937, now seen corresponding path program 1 times [2020-09-24 19:24:27,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:27,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156852977] [2020-09-24 19:24:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:27,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:27,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:27,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 19:24:27,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-09-24 19:24:27,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:24:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 19:24:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 19:24:27,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:27,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:27,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:27,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:27,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:27,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:27,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:24:27,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:27,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:27,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156852977] [2020-09-24 19:24:27,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:27,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:24:27,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372080555] [2020-09-24 19:24:27,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:24:27,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:27,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:24:27,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:24:27,790 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 6 states. [2020-09-24 19:24:28,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:28,040 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2020-09-24 19:24:28,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:24:28,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-24 19:24:28,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:28,042 INFO L225 Difference]: With dead ends: 136 [2020-09-24 19:24:28,044 INFO L226 Difference]: Without dead ends: 114 [2020-09-24 19:24:28,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:24:28,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-24 19:24:28,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2020-09-24 19:24:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 19:24:28,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-24 19:24:28,066 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 36 [2020-09-24 19:24:28,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:28,066 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-24 19:24:28,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:24:28,066 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-24 19:24:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 19:24:28,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:28,071 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:28,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:24:28,072 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:28,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:28,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1237644091, now seen corresponding path program 1 times [2020-09-24 19:24:28,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:28,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595043018] [2020-09-24 19:24:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:28,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:29,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:29,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:24:29,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:29,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-09-24 19:24:29,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:29,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:24:29,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:24:29,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:24:29,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:24:29,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:29,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:29,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:29,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:29,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:24:29,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:29,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:29,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:29,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595043018] [2020-09-24 19:24:29,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:29,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 19:24:29,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210428771] [2020-09-24 19:24:29,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 19:24:29,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:29,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 19:24:29,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:24:29,785 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 15 states. [2020-09-24 19:24:30,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:30,986 INFO L93 Difference]: Finished difference Result 166 states and 175 transitions. [2020-09-24 19:24:30,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 19:24:30,987 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-09-24 19:24:30,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:30,989 INFO L225 Difference]: With dead ends: 166 [2020-09-24 19:24:30,989 INFO L226 Difference]: Without dead ends: 163 [2020-09-24 19:24:30,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2020-09-24 19:24:30,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-24 19:24:31,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2020-09-24 19:24:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-24 19:24:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-09-24 19:24:31,004 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 40 [2020-09-24 19:24:31,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:31,005 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-09-24 19:24:31,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 19:24:31,005 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-09-24 19:24:31,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 19:24:31,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:31,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:31,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:24:31,007 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:31,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:31,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1411163060, now seen corresponding path program 1 times [2020-09-24 19:24:31,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:31,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252889113] [2020-09-24 19:24:31,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:31,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:31,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:31,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:32,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:32,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 19:24:32,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:24:32,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:24:32,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:32,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:24:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:24:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:24:32,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:32,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:32,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:32,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:32,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:32,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:32,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:24:32,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:32,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:32,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:32,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:32,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:32,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252889113] [2020-09-24 19:24:32,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:32,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:24:32,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993326005] [2020-09-24 19:24:32,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:24:32,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:32,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:24:32,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:24:32,157 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 7 states. [2020-09-24 19:24:32,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:32,417 INFO L93 Difference]: Finished difference Result 133 states and 140 transitions. [2020-09-24 19:24:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:24:32,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-09-24 19:24:32,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:32,419 INFO L225 Difference]: With dead ends: 133 [2020-09-24 19:24:32,419 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 19:24:32,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:24:32,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 19:24:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-09-24 19:24:32,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-24 19:24:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2020-09-24 19:24:32,428 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 43 [2020-09-24 19:24:32,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:32,428 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2020-09-24 19:24:32,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:24:32,428 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2020-09-24 19:24:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 19:24:32,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:32,430 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:32,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:24:32,431 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:32,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1215747511, now seen corresponding path program 1 times [2020-09-24 19:24:32,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:32,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084803894] [2020-09-24 19:24:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:32,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:33,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:33,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:24:33,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:33,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:24:33,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:33,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:24:33,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:24:33,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:24:33,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:34,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:34,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:34,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:34,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:34,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:34,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:24:34,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:34,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:34,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:34,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084803894] [2020-09-24 19:24:34,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:34,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 19:24:34,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913803115] [2020-09-24 19:24:34,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 19:24:34,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:34,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 19:24:34,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:24:34,432 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand 19 states. [2020-09-24 19:24:36,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:36,289 INFO L93 Difference]: Finished difference Result 169 states and 178 transitions. [2020-09-24 19:24:36,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 19:24:36,290 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-09-24 19:24:36,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:36,292 INFO L225 Difference]: With dead ends: 169 [2020-09-24 19:24:36,292 INFO L226 Difference]: Without dead ends: 166 [2020-09-24 19:24:36,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 19:24:36,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-24 19:24:36,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 103. [2020-09-24 19:24:36,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-24 19:24:36,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-09-24 19:24:36,301 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 47 [2020-09-24 19:24:36,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:36,302 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-09-24 19:24:36,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 19:24:36,302 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-09-24 19:24:36,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 19:24:36,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:36,304 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:36,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:24:36,305 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:36,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:36,305 INFO L82 PathProgramCache]: Analyzing trace with hash 632390076, now seen corresponding path program 1 times [2020-09-24 19:24:36,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:36,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787554378] [2020-09-24 19:24:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:36,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:37,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:37,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:37,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:24:37,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:24:37,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1179 [2020-09-24 19:24:37,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:37,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:24:37,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 19:24:37,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 19:24:37,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:37,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:37,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:37,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:37,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:37,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:37,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:24:37,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:37,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:37,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 19:24:37,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787554378] [2020-09-24 19:24:37,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:37,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:24:37,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364823370] [2020-09-24 19:24:37,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:24:37,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:37,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:24:37,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:24:37,636 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 6 states. [2020-09-24 19:24:37,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:37,887 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2020-09-24 19:24:37,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:24:37,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-24 19:24:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:37,889 INFO L225 Difference]: With dead ends: 131 [2020-09-24 19:24:37,889 INFO L226 Difference]: Without dead ends: 109 [2020-09-24 19:24:37,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:24:37,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-24 19:24:37,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-09-24 19:24:37,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-24 19:24:37,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2020-09-24 19:24:37,897 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 49 [2020-09-24 19:24:37,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:37,897 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2020-09-24 19:24:37,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:24:37,898 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2020-09-24 19:24:37,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 19:24:37,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:37,899 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:37,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:24:37,899 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:37,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:37,900 INFO L82 PathProgramCache]: Analyzing trace with hash 231328440, now seen corresponding path program 2 times [2020-09-24 19:24:37,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:37,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490637719] [2020-09-24 19:24:37,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:37,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:38,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:38,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 19:24:38,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:38,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-24 19:24:38,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:38,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:24:38,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:24:38,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 19:24:38,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:39,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:39,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:39,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:39,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:39,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:39,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:24:39,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:39,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:39,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:39,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:39,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:39,928 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:39,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490637719] [2020-09-24 19:24:39,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:39,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 19:24:39,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265282070] [2020-09-24 19:24:39,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 19:24:39,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:39,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 19:24:39,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:24:39,931 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand 19 states. [2020-09-24 19:24:40,467 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-09-24 19:24:41,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:41,485 INFO L93 Difference]: Finished difference Result 186 states and 195 transitions. [2020-09-24 19:24:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 19:24:41,486 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2020-09-24 19:24:41,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:41,488 INFO L225 Difference]: With dead ends: 186 [2020-09-24 19:24:41,488 INFO L226 Difference]: Without dead ends: 183 [2020-09-24 19:24:41,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 19:24:41,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-24 19:24:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 119. [2020-09-24 19:24:41,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-24 19:24:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2020-09-24 19:24:41,497 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 53 [2020-09-24 19:24:41,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:41,498 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2020-09-24 19:24:41,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 19:24:41,498 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2020-09-24 19:24:41,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 19:24:41,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:41,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:41,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:24:41,500 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:41,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:41,500 INFO L82 PathProgramCache]: Analyzing trace with hash -2144912159, now seen corresponding path program 1 times [2020-09-24 19:24:41,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:41,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645387332] [2020-09-24 19:24:41,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:41,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:41,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:42,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:42,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:42,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:42,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:24:42,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:24:42,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 19:24:42,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:24:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 19:24:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 19:24:42,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:42,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:42,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:42,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:42,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:42,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:42,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:24:42,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:42,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:42,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:42,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:42,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:42,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:42,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645387332] [2020-09-24 19:24:42,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:42,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 19:24:42,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635192747] [2020-09-24 19:24:42,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 19:24:42,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:42,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 19:24:42,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:24:42,947 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand 15 states. [2020-09-24 19:24:43,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:43,927 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-09-24 19:24:43,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 19:24:43,928 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-24 19:24:43,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:43,929 INFO L225 Difference]: With dead ends: 188 [2020-09-24 19:24:43,929 INFO L226 Difference]: Without dead ends: 166 [2020-09-24 19:24:43,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2020-09-24 19:24:43,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-24 19:24:43,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 135. [2020-09-24 19:24:43,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-24 19:24:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2020-09-24 19:24:43,943 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 56 [2020-09-24 19:24:43,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:43,944 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2020-09-24 19:24:43,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 19:24:43,944 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2020-09-24 19:24:43,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 19:24:43,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:43,945 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:43,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:24:43,946 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:43,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:43,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1025074422, now seen corresponding path program 1 times [2020-09-24 19:24:43,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:43,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116461604] [2020-09-24 19:24:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:44,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:45,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:45,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 19:24:45,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:45,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:24:45,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 19:24:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:24:45,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 19:24:45,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:45,710 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-09-24 19:24:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:46,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:46,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:46,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:46,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:46,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:24:46,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:46,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:46,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:46,183 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:46,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116461604] [2020-09-24 19:24:46,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:46,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 19:24:46,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782672912] [2020-09-24 19:24:46,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 19:24:46,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:46,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 19:24:46,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2020-09-24 19:24:46,190 INFO L87 Difference]: Start difference. First operand 135 states and 142 transitions. Second operand 25 states. [2020-09-24 19:24:46,791 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-09-24 19:24:49,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:49,257 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-09-24 19:24:49,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-24 19:24:49,259 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2020-09-24 19:24:49,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:49,261 INFO L225 Difference]: With dead ends: 163 [2020-09-24 19:24:49,261 INFO L226 Difference]: Without dead ends: 160 [2020-09-24 19:24:49,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=640, Invalid=2116, Unknown=0, NotChecked=0, Total=2756 [2020-09-24 19:24:49,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-24 19:24:49,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 103. [2020-09-24 19:24:49,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-24 19:24:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-09-24 19:24:49,269 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 60 [2020-09-24 19:24:49,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:49,270 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-09-24 19:24:49,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 19:24:49,270 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-09-24 19:24:49,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 19:24:49,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:49,271 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:49,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:24:49,271 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:49,272 INFO L82 PathProgramCache]: Analyzing trace with hash -412836324, now seen corresponding path program 2 times [2020-09-24 19:24:49,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:49,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352333375] [2020-09-24 19:24:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:49,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:50,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:50,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:50,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 19:24:50,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:24:50,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-09-24 19:24:50,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:50,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:24:50,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:24:50,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 19:24:50,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:50,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:50,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:50,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:50,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:24:50,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:50,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:50,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352333375] [2020-09-24 19:24:50,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:50,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 19:24:50,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750382885] [2020-09-24 19:24:50,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 19:24:50,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:50,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 19:24:50,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:24:50,722 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 17 states. [2020-09-24 19:24:51,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:51,847 INFO L93 Difference]: Finished difference Result 147 states and 153 transitions. [2020-09-24 19:24:51,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 19:24:51,848 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 63 [2020-09-24 19:24:51,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:51,850 INFO L225 Difference]: With dead ends: 147 [2020-09-24 19:24:51,850 INFO L226 Difference]: Without dead ends: 101 [2020-09-24 19:24:51,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 19:24:51,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-24 19:24:51,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 87. [2020-09-24 19:24:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-24 19:24:51,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-09-24 19:24:51,857 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 63 [2020-09-24 19:24:51,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:51,858 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-09-24 19:24:51,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 19:24:51,858 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-09-24 19:24:51,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 19:24:51,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:51,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:51,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 19:24:51,859 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:51,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:51,860 INFO L82 PathProgramCache]: Analyzing trace with hash -80620955, now seen corresponding path program 1 times [2020-09-24 19:24:51,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:51,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927832228] [2020-09-24 19:24:51,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:51,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:53,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:53,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 19:24:53,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:53,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-09-24 19:24:53,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:53,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 19:24:53,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:53,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 19:24:53,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:53,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:53,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:53,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:53,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:53,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:53,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:24:53,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:53,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927832228] [2020-09-24 19:24:53,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:53,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 19:24:53,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230875819] [2020-09-24 19:24:53,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 19:24:53,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:53,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 19:24:53,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2020-09-24 19:24:53,801 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 23 states. [2020-09-24 19:24:56,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:56,342 INFO L93 Difference]: Finished difference Result 174 states and 181 transitions. [2020-09-24 19:24:56,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 19:24:56,344 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 63 [2020-09-24 19:24:56,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:56,346 INFO L225 Difference]: With dead ends: 174 [2020-09-24 19:24:56,346 INFO L226 Difference]: Without dead ends: 172 [2020-09-24 19:24:56,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=347, Invalid=1723, Unknown=0, NotChecked=0, Total=2070 [2020-09-24 19:24:56,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-24 19:24:56,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 122. [2020-09-24 19:24:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-24 19:24:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 128 transitions. [2020-09-24 19:24:56,354 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 128 transitions. Word has length 63 [2020-09-24 19:24:56,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:56,354 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 128 transitions. [2020-09-24 19:24:56,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 19:24:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 128 transitions. [2020-09-24 19:24:56,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 19:24:56,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:56,356 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:56,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 19:24:56,356 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:56,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:56,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1761981780, now seen corresponding path program 1 times [2020-09-24 19:24:56,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:56,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778580597] [2020-09-24 19:24:56,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:24:56,389 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:24:56,389 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:24:56,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 19:24:56,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:24:56 BoogieIcfgContainer [2020-09-24 19:24:56,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:24:56,416 INFO L168 Benchmark]: Toolchain (without parser) took 33496.34 ms. Allocated memory was 146.8 MB in the beginning and 468.7 MB in the end (delta: 321.9 MB). Free memory was 100.5 MB in the beginning and 116.4 MB in the end (delta: -16.0 MB). Peak memory consumption was 306.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:24:56,417 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 146.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:24:56,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.33 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 99.8 MB in the beginning and 170.8 MB in the end (delta: -71.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:24:56,418 INFO L168 Benchmark]: Boogie Preprocessor took 74.78 ms. Allocated memory is still 204.5 MB. Free memory was 170.8 MB in the beginning and 168.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:24:56,419 INFO L168 Benchmark]: RCFGBuilder took 754.26 ms. Allocated memory is still 204.5 MB. Free memory was 168.1 MB in the beginning and 116.7 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:24:56,420 INFO L168 Benchmark]: TraceAbstraction took 31922.42 ms. Allocated memory was 204.5 MB in the beginning and 468.7 MB in the end (delta: 264.2 MB). Free memory was 116.1 MB in the beginning and 116.4 MB in the end (delta: -328.0 kB). Peak memory consumption was 263.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:24:56,423 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 146.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 736.33 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 99.8 MB in the beginning and 170.8 MB in the end (delta: -71.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.78 ms. Allocated memory is still 204.5 MB. Free memory was 170.8 MB in the beginning and 168.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 754.26 ms. Allocated memory is still 204.5 MB. Free memory was 168.1 MB in the beginning and 116.7 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31922.42 ms. Allocated memory was 204.5 MB in the beginning and 468.7 MB in the end (delta: 264.2 MB). Free memory was 116.1 MB in the beginning and 116.4 MB in the end (delta: -328.0 kB). Peak memory consumption was 263.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1039]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* null = malloc(sizeof(SLL)); [L995] null->colour = BLACK [L996] null->next = ((void*)0) [L998] SLL* list = malloc(sizeof(SLL)); [L999] list->next = null [L1000] list->colour = BLACK [L1002] SLL* end = list; [L1005] COND TRUE __VERIFIER_nondet_int() [L1008] end->next = malloc(sizeof(SLL)) [L1009] EXPR end->next [L1009] end = end->next [L1010] end->next = null [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1018] end->colour = RED [L1019] end->next = malloc(sizeof(SLL)) [L1020] EXPR end->next [L1020] end = end->next [L1021] end->next = null [L1022] end->colour = BLACK [L1005] 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)) [L1033] COND TRUE null != end [L1035] EXPR end->colour [L1035] COND FALSE !(RED == end->colour) [L1042] EXPR end->next [L1042] end = end->next [L1033] COND TRUE null != end [L1035] EXPR end->colour [L1035] COND TRUE RED == end->colour [L1037] EXPR end->next [L1037] end = end->next [L1038] COND FALSE !(!(null != end)) [L1039] EXPR end->colour [L1039] COND TRUE !(BLACK != end->colour) [L1039] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 98 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 31.8s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 13.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 804 SDtfs, 3542 SDslu, 4392 SDs, 0 SdLazy, 4681 SolverSat, 774 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 339 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 12.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=10, 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, 13 MinimizatonAttempts, 421 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 16.8s InterpolantComputationTime, 648 NumberOfCodeBlocks, 648 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 568 ConstructedInterpolants, 0 QuantifiedInterpolants, 344263 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 10/66 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...