/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:50:23,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:50:23,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:50:23,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:50:23,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:50:23,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:50:23,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:50:23,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:50:23,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:50:23,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:50:23,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:50:23,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:50:23,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:50:23,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:50:23,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:50:23,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:50:23,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:50:23,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:50:23,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:50:23,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:50:23,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:50:23,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:50:23,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:50:23,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:50:23,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:50:23,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:50:23,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:50:23,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:50:23,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:50:23,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:50:23,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:50:23,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:50:23,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:50:23,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:50:23,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:50:23,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:50:23,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:50:23,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:50:23,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:50:23,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:50:23,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:50:23,996 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 [2020-09-25 07:50:24,047 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:50:24,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:50:24,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:50:24,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:50:24,050 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:50:24,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:50:24,051 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:50:24,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:50:24,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:50:24,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:50:24,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:50:24,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:50:24,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:50:24,053 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:50:24,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:50:24,053 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:50:24,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:50:24,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:50:24,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:50:24,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:50:24,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:50:24,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:50:24,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:50:24,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:50:24,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:50:24,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:50:24,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:50:24,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:50:24,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:50:24,056 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:50:24,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:50:24,556 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:50:24,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:50:24,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:50:24,563 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:50:24,564 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 07:50:24,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f8e68c87/6513936b89ad4a44822b438d6a92a010/FLAGd6e63be7f [2020-09-25 07:50:25,281 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:50:25,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 07:50:25,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f8e68c87/6513936b89ad4a44822b438d6a92a010/FLAGd6e63be7f [2020-09-25 07:50:25,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f8e68c87/6513936b89ad4a44822b438d6a92a010 [2020-09-25 07:50:25,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:50:25,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:50:25,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:25,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:50:25,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:50:25,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:25" (1/1) ... [2020-09-25 07:50:25,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70cb5a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:25, skipping insertion in model container [2020-09-25 07:50:25,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:25" (1/1) ... [2020-09-25 07:50:25,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:50:25,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:50:26,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:26,215 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:50:26,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:26,324 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:50:26,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:26 WrapperNode [2020-09-25 07:50:26,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:26,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:50:26,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:50:26,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:50:26,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:26" (1/1) ... [2020-09-25 07:50:26,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:26" (1/1) ... [2020-09-25 07:50:26,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:26" (1/1) ... [2020-09-25 07:50:26,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:26" (1/1) ... [2020-09-25 07:50:26,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:26" (1/1) ... [2020-09-25 07:50:26,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:26" (1/1) ... [2020-09-25 07:50:26,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:26" (1/1) ... [2020-09-25 07:50:26,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:50:26,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:50:26,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:50:26,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:50:26,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:26" (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 [2020-09-25 07:50:26,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:50:26,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:50:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 07:50:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 07:50:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 07:50:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 07:50:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 07:50:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 07:50:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2020-09-25 07:50:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2020-09-25 07:50:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:50:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:50:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 07:50:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 07:50:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 07:50:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 07:50:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 07:50:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 07:50:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 07:50:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 07:50:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 07:50:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 07:50:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 07:50:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 07:50:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 07:50:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 07:50:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 07:50:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 07:50:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 07:50:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 07:50:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 07:50:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 07:50:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 07:50:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 07:50:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 07:50:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 07:50:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 07:50:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 07:50:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 07:50:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 07:50:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 07:50:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 07:50:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 07:50:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 07:50:26,492 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 07:50:26,492 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 07:50:26,492 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 07:50:26,492 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 07:50:26,492 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 07:50:26,492 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 07:50:26,493 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 07:50:26,493 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 07:50:26,493 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 07:50:26,493 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 07:50:26,493 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 07:50:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 07:50:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 07:50:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 07:50:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 07:50:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 07:50:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 07:50:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 07:50:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 07:50:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 07:50:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 07:50:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 07:50:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 07:50:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 07:50:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 07:50:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 07:50:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 07:50:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 07:50:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 07:50:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 07:50:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 07:50:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 07:50:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 07:50:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:50:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 07:50:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 07:50:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 07:50:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 07:50:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 07:50:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 07:50:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 07:50:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 07:50:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 07:50:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 07:50:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 07:50:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 07:50:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 07:50:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 07:50:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 07:50:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 07:50:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 07:50:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 07:50:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 07:50:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 07:50:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 07:50:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 07:50:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 07:50:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 07:50:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 07:50:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 07:50:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 07:50:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 07:50:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 07:50:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 07:50:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 07:50:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 07:50:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 07:50:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 07:50:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 07:50:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 07:50:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 07:50:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 07:50:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 07:50:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 07:50:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 07:50:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 07:50:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 07:50:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:50:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 07:50:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 07:50:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 07:50:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:50:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2020-09-25 07:50:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:50:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2020-09-25 07:50:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:50:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:50:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:50:27,001 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 07:50:27,187 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:50:27,187 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 07:50:27,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:27 BoogieIcfgContainer [2020-09-25 07:50:27,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:50:27,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:50:27,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:50:27,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:50:27,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:50:25" (1/3) ... [2020-09-25 07:50:27,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4911a570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:27, skipping insertion in model container [2020-09-25 07:50:27,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:26" (2/3) ... [2020-09-25 07:50:27,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4911a570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:27, skipping insertion in model container [2020-09-25 07:50:27,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:27" (3/3) ... [2020-09-25 07:50:27,203 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2020-09-25 07:50:27,216 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:50:27,227 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:50:27,251 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:50:27,282 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:50:27,283 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:50:27,283 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:50:27,283 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:50:27,283 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:50:27,283 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:50:27,283 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:50:27,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:50:27,311 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-09-25 07:50:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 07:50:27,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:27,324 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, 1, 1] [2020-09-25 07:50:27,324 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:27,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:27,331 INFO L82 PathProgramCache]: Analyzing trace with hash 482514570, now seen corresponding path program 1 times [2020-09-25 07:50:27,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:27,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849934713] [2020-09-25 07:50:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:27,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:27,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:27,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:27,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:28,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:28,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 07:50:28,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:50:28,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-09-25 07:50:28,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:28,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 07:50:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:28,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:50:28,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:28,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:28,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:28,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:28,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:50:28,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:28,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:28,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:28,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:28,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:28,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:28,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:50:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:28,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:28,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:28,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:28,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:28,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:50:28,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:28,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 07:50:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:28,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:28,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 07:50:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:28,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:28,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:28,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:28,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:50:28,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:28,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:50:28,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:28,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:28,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 07:50:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:28,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:28,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849934713] [2020-09-25 07:50:28,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:28,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:50:28,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049129602] [2020-09-25 07:50:28,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:50:28,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:28,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:50:28,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:28,570 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-09-25 07:50:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:29,037 INFO L93 Difference]: Finished difference Result 230 states and 285 transitions. [2020-09-25 07:50:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:50:29,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-09-25 07:50:29,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:29,056 INFO L225 Difference]: With dead ends: 230 [2020-09-25 07:50:29,056 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 07:50:29,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:50:29,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 07:50:29,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 84. [2020-09-25 07:50:29,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 07:50:29,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-09-25 07:50:29,132 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 38 [2020-09-25 07:50:29,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:29,133 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-09-25 07:50:29,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:50:29,133 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-09-25 07:50:29,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 07:50:29,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:29,135 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, 1, 1] [2020-09-25 07:50:29,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:50:29,136 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:29,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:29,137 INFO L82 PathProgramCache]: Analyzing trace with hash -613399993, now seen corresponding path program 1 times [2020-09-25 07:50:29,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:29,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965931681] [2020-09-25 07:50:29,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:29,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:29,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:29,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:29,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:29,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:30,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:30,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 07:50:30,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:50:30,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1528 [2020-09-25 07:50:30,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:30,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:30,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:50:30,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:50:30,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:50:30,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:30,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:30,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:30,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:30,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:30,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:30,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:50:30,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:30,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:30,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:30,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:30,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:50:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:30,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:30,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:30,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:30,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:30,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:30,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 07:50:30,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:30,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:30,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:50:30,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:30,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 07:50:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:30,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:30,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:30,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:50:30,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:30,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 07:50:30,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:30,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:50:30,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:50:30,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:30,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965931681] [2020-09-25 07:50:30,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:30,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:50:30,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089307157] [2020-09-25 07:50:30,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:50:30,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:30,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:50:30,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:50:30,927 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 8 states. [2020-09-25 07:50:31,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:31,764 INFO L93 Difference]: Finished difference Result 182 states and 202 transitions. [2020-09-25 07:50:31,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 07:50:31,766 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-25 07:50:31,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:31,769 INFO L225 Difference]: With dead ends: 182 [2020-09-25 07:50:31,769 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 07:50:31,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:50:31,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 07:50:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 94. [2020-09-25 07:50:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 07:50:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2020-09-25 07:50:31,792 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 38 [2020-09-25 07:50:31,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:31,793 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2020-09-25 07:50:31,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:50:31,794 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2020-09-25 07:50:31,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 07:50:31,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:31,798 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:31,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:50:31,798 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:31,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:31,799 INFO L82 PathProgramCache]: Analyzing trace with hash 884026993, now seen corresponding path program 1 times [2020-09-25 07:50:31,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:31,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050465650] [2020-09-25 07:50:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:31,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:31,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:31,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:32,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:32,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:33,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:33,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:33,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:36,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:36,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 07:50:36,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:50:36,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 07:50:36,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:36,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:50:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 07:50:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:50:36,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:36,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:36,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:36,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:36,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:36,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:36,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:50:36,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:36,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:36,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:36,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:36,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:36,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:50:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:36,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:36,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:36,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:36,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:36,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:50:36,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:36,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:36,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:36,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:36,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:50:36,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:37,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 07:50:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:37,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:37,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:37,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:37,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:37,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 07:50:37,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:37,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:50:37,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:37,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 07:50:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:37,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:37,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:37,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:50:37,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:37,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 07:50:37,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:37,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:50:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:50:37,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:37,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:37,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050465650] [2020-09-25 07:50:37,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:37,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 07:50:37,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706225241] [2020-09-25 07:50:37,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 07:50:37,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:37,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 07:50:37,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:50:37,169 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand 11 states. [2020-09-25 07:50:37,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:37,778 INFO L93 Difference]: Finished difference Result 170 states and 183 transitions. [2020-09-25 07:50:37,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:50:37,778 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-09-25 07:50:37,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:37,780 INFO L225 Difference]: With dead ends: 170 [2020-09-25 07:50:37,780 INFO L226 Difference]: Without dead ends: 107 [2020-09-25 07:50:37,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-09-25 07:50:37,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-25 07:50:37,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2020-09-25 07:50:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 07:50:37,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2020-09-25 07:50:37,808 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 58 [2020-09-25 07:50:37,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:37,812 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2020-09-25 07:50:37,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 07:50:37,812 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2020-09-25 07:50:37,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 07:50:37,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:37,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:37,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:50:37,819 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:37,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:37,819 INFO L82 PathProgramCache]: Analyzing trace with hash 281898851, now seen corresponding path program 1 times [2020-09-25 07:50:37,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:37,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835145194] [2020-09-25 07:50:37,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:37,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:38,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:38,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:38,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:42,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:42,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 07:50:42,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:50:42,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 07:50:42,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:42,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:50:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 07:50:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 07:50:42,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:42,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:42,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:42,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:42,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:42,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:42,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:50:42,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:42,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:42,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:42,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:42,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:50:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:42,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:43,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:43,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:50:43,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 07:50:43,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:43,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:50:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:43,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:50:43,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:43,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:50:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:43,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:43,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:43,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:50:43,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:43,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 07:50:43,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:43,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:50:43,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:43,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 07:50:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:43,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:43,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:43,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:43,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:43,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:50:43,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:43,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:43,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:50:43,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:43,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 07:50:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:43,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:43,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:43,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:50:43,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:43,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 07:50:43,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:43,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:50:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:50:43,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:43,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835145194] [2020-09-25 07:50:43,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:43,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 07:50:43,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106242849] [2020-09-25 07:50:43,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 07:50:43,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:43,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 07:50:43,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:50:43,381 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand 13 states. [2020-09-25 07:50:44,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:44,112 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2020-09-25 07:50:44,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 07:50:44,113 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-09-25 07:50:44,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:44,116 INFO L225 Difference]: With dead ends: 170 [2020-09-25 07:50:44,116 INFO L226 Difference]: Without dead ends: 116 [2020-09-25 07:50:44,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-09-25 07:50:44,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-25 07:50:44,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2020-09-25 07:50:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 07:50:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2020-09-25 07:50:44,132 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 76 [2020-09-25 07:50:44,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:44,133 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2020-09-25 07:50:44,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 07:50:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2020-09-25 07:50:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-25 07:50:44,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:44,135 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:44,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:50:44,136 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:44,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:44,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1586882603, now seen corresponding path program 2 times [2020-09-25 07:50:44,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:44,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074263412] [2020-09-25 07:50:44,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:44,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:44,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:45,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:46,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:48,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:49,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:49,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 07:50:49,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:50:49,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5563 [2020-09-25 07:50:49,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:49,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:50:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:50:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 07:50:49,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:49,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:49,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:49,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:49,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:49,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:49,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:50:49,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:49,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:49,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:49,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:50:49,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:50:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:49,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:49,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:50,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:50,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 07:50:50,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-25 07:50:50,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:50,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 07:50:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:50,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:50:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:50,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:50,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:50,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:50:50,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:50,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:50:50,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:50,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:50,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:50,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 07:50:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:50,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:50,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:50,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:50:50,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:50,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:50:50,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:50,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:50,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:50,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:50,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:50,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:50,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 07:50:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:50,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:50,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:50,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:50,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:50,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 07:50:50,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:50,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:50,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:50,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:50,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:50:50,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:50,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 07:50:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:50,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:50,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:50,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:50:50,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:50,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:50:50,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:50,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:50:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:50,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 07:50:50,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074263412] [2020-09-25 07:50:50,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:50,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:50:50,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417885451] [2020-09-25 07:50:50,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:50:50,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:50,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:50:50,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:50:50,422 INFO L87 Difference]: Start difference. First operand 104 states and 111 transitions. Second operand 9 states. [2020-09-25 07:50:50,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:50,907 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2020-09-25 07:50:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:50:50,907 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-09-25 07:50:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:50,909 INFO L225 Difference]: With dead ends: 154 [2020-09-25 07:50:50,909 INFO L226 Difference]: Without dead ends: 118 [2020-09-25 07:50:50,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:50:50,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-25 07:50:50,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2020-09-25 07:50:50,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 07:50:50,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-09-25 07:50:50,935 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 94 [2020-09-25 07:50:50,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:50,939 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-09-25 07:50:50,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:50:50,939 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-09-25 07:50:50,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 07:50:50,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:50,945 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:50,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:50:50,945 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:50,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:50,946 INFO L82 PathProgramCache]: Analyzing trace with hash -892358661, now seen corresponding path program 3 times [2020-09-25 07:50:50,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:50,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987230672] [2020-09-25 07:50:50,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:51,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:51,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:51,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:52,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:55,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:56,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:56,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 07:50:56,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:50:56,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5836 [2020-09-25 07:50:56,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:56,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:56,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:50:56,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:50:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:50:56,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:56,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:56,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:56,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:56,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:56,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:56,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:50:56,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:56,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:56,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:56,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:50:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:56,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:57,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:57,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:57,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 07:50:57,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:57,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-25 07:50:57,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:57,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:57,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:57,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 07:50:57,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:57,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:50:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:57,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:57,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:57,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:50:57,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:57,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:50:57,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:57,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:57,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:57,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 07:50:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:57,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:57,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:57,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:50:57,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:57,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:50:57,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:57,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:57,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:57,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 07:50:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:57,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:57,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:57,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:57,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:50:57,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:57,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 07:50:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:50:57,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:57,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 07:50:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:57,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:57,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:57,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:57,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:57,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:50:57,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:57,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 07:50:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:57,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:57,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 07:50:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:57,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:57,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:57,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:50:57,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:57,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:50:57,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:57,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:50:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:57,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 07:50:57,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987230672] [2020-09-25 07:50:57,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:57,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:50:57,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742447711] [2020-09-25 07:50:57,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:50:57,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:57,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:50:57,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:50:57,418 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 9 states. [2020-09-25 07:50:57,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:57,895 INFO L93 Difference]: Finished difference Result 186 states and 201 transitions. [2020-09-25 07:50:57,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:50:57,896 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-09-25 07:50:57,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:57,897 INFO L225 Difference]: With dead ends: 186 [2020-09-25 07:50:57,897 INFO L226 Difference]: Without dead ends: 127 [2020-09-25 07:50:57,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:50:57,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-25 07:50:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 114. [2020-09-25 07:50:57,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 07:50:57,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-09-25 07:50:57,925 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 107 [2020-09-25 07:50:57,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:57,926 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-09-25 07:50:57,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:50:57,926 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-09-25 07:50:57,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 07:50:57,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:57,933 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:57,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:50:57,934 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:57,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1090353339, now seen corresponding path program 1 times [2020-09-25 07:50:57,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:57,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517812539] [2020-09-25 07:50:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:58,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:00,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:00,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:02,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:02,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:03,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:03,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 07:51:03,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:51:03,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 07:51:03,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:03,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-09-25 07:51:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:51:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 07:51:03,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:03,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:03,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:03,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:03,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:51:03,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:03,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:51:03,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:03,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:03,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:03,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:51:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:03,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:03,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:05,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:05,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 07:51:05,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:51:05,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1794 [2020-09-25 07:51:05,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:05,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 07:51:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 07:51:05,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:05,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:51:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:05,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:06,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:06,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:51:06,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:06,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 07:51:06,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:06,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:51:06,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:06,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 07:51:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:06,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:06,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:06,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:51:06,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 07:51:06,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:06,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:51:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:51:06,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:06,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 07:51:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:06,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:06,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:06,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:51:06,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:06,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 07:51:06,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:06,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:51:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:06,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:51:06,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:07,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 07:51:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:07,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:07,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:07,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:51:07,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:07,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 07:51:07,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:07,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:51:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:51:07,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:08,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 07:51:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:08,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:08,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:08,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:51:08,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:08,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 07:51:08,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:08,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:51:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:51:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 07:51:08,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517812539] [2020-09-25 07:51:08,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:08,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-09-25 07:51:08,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152787376] [2020-09-25 07:51:08,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-09-25 07:51:08,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:08,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-09-25 07:51:08,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2630, Unknown=0, NotChecked=0, Total=2756 [2020-09-25 07:51:08,703 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 53 states.