/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:20:26,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:20:26,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:20:26,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:20:26,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:20:26,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:20:26,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:20:26,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:20:26,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:20:26,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:20:26,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:20:26,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:20:26,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:20:26,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:20:26,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:20:26,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:20:26,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:20:26,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:20:26,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:20:26,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:20:26,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:20:26,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:20:26,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:20:26,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:20:26,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:20:26,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:20:26,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:20:26,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:20:26,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:20:26,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:20:26,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:20:26,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:20:26,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:20:26,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:20:26,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:20:26,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:20:26,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:20:26,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:20:26,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:20:26,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:20:26,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:20:26,954 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 12:20:26,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:20:26,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:20:26,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:20:26,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:20:26,981 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:20:26,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:20:26,982 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:20:26,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:20:26,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:20:26,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:20:26,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:20:26,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:20:26,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:20:26,983 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:20:26,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:20:26,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:20:26,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:20:26,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:20:26,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:20:26,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:20:26,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:20:26,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:20:26,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:20:26,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:20:26,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:20:26,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:20:26,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:20:26,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:20:26,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:20:26,986 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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:20:27,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:20:27,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:20:27,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:20:27,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:20:27,487 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:20:27,488 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 12:20:27,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b918357b/91b4974219e943bd8373477224751648/FLAG454f11c62 [2020-09-25 12:20:28,144 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:20:28,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 12:20:28,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b918357b/91b4974219e943bd8373477224751648/FLAG454f11c62 [2020-09-25 12:20:28,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b918357b/91b4974219e943bd8373477224751648 [2020-09-25 12:20:28,432 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:20:28,436 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:20:28,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:28,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:20:28,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:20:28,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:28" (1/1) ... [2020-09-25 12:20:28,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6317371b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:28, skipping insertion in model container [2020-09-25 12:20:28,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:28" (1/1) ... [2020-09-25 12:20:28,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:20:28,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:20:28,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:29,011 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:20:29,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:29,121 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:20:29,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:29 WrapperNode [2020-09-25 12:20:29,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:29,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:20:29,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:20:29,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:20:29,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:29" (1/1) ... [2020-09-25 12:20:29,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:29" (1/1) ... [2020-09-25 12:20:29,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:29" (1/1) ... [2020-09-25 12:20:29,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:29" (1/1) ... [2020-09-25 12:20:29,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:29" (1/1) ... [2020-09-25 12:20:29,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:29" (1/1) ... [2020-09-25 12:20:29,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:29" (1/1) ... [2020-09-25 12:20:29,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:20:29,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:20:29,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:20:29,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:20:29,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:29" (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 12:20:29,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:20:29,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:20:29,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 12:20:29,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 12:20:29,288 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 12:20:29,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:20:29,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:20:29,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:20:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 12:20:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 12:20:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 12:20:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 12:20:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 12:20:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 12:20:29,292 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 12:20:29,293 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 12:20:29,293 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 12:20:29,293 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 12:20:29,293 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 12:20:29,293 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 12:20:29,294 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 12:20:29,295 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 12:20:29,295 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 12:20:29,295 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 12:20:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 12:20:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 12:20:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 12:20:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 12:20:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 12:20:29,299 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 12:20:29,299 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 12:20:29,299 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 12:20:29,300 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 12:20:29,300 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 12:20:29,300 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 12:20:29,300 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 12:20:29,300 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 12:20:29,300 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 12:20:29,300 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 12:20:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 12:20:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 12:20:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 12:20:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 12:20:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 12:20:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 12:20:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 12:20:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 12:20:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 12:20:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 12:20:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 12:20:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 12:20:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 12:20:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 12:20:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 12:20:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 12:20:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 12:20:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 12:20:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 12:20:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 12:20:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 12:20:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 12:20:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 12:20:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 12:20:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 12:20:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 12:20:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 12:20:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 12:20:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 12:20:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 12:20:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:20:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 12:20:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 12:20:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 12:20:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:20:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 12:20:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 12:20:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 12:20:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 12:20:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 12:20:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 12:20:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 12:20:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 12:20:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 12:20:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 12:20:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 12:20:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 12:20:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 12:20:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 12:20:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 12:20:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 12:20:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 12:20:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 12:20:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 12:20:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 12:20:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 12:20:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 12:20:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 12:20:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 12:20:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 12:20:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 12:20:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 12:20:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 12:20:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 12:20:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 12:20:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 12:20:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 12:20:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 12:20:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 12:20:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 12:20:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 12:20:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 12:20:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 12:20:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 12:20:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 12:20:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:20:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 12:20:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 12:20:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 12:20:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:20:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 12:20:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 12:20:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:20:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:20:29,667 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 12:20:30,033 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:20:30,034 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-25 12:20:30,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:30 BoogieIcfgContainer [2020-09-25 12:20:30,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:20:30,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:20:30,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:20:30,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:20:30,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:20:28" (1/3) ... [2020-09-25 12:20:30,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614c2933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:30, skipping insertion in model container [2020-09-25 12:20:30,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:29" (2/3) ... [2020-09-25 12:20:30,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614c2933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:30, skipping insertion in model container [2020-09-25 12:20:30,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:30" (3/3) ... [2020-09-25 12:20:30,051 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-09-25 12:20:30,062 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:20:30,074 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:20:30,097 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:20:30,128 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:20:30,128 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:20:30,128 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:20:30,128 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:20:30,129 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:20:30,129 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:20:30,129 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:20:30,129 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:20:30,170 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-25 12:20:30,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 12:20:30,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:30,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:30,190 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:30,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:30,199 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-09-25 12:20:30,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:30,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598584910] [2020-09-25 12:20:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:30,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:30,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:30,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:30,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:30,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:30,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:31,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:31,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:20:31,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:20:31,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 856 [2020-09-25 12:20:31,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:31,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:20:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:20:31,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:20:31,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:31,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:31,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:31,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:31,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:31,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:20:31,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:31,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:31,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:31,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:31,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:31,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:31,340 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 12:20:31,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598584910] [2020-09-25 12:20:31,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:31,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:20:31,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333942276] [2020-09-25 12:20:31,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:20:31,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:31,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:20:31,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:20:31,372 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 5 states. [2020-09-25 12:20:31,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:31,886 INFO L93 Difference]: Finished difference Result 377 states and 443 transitions. [2020-09-25 12:20:31,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:20:31,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-25 12:20:31,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:31,913 INFO L225 Difference]: With dead ends: 377 [2020-09-25 12:20:31,914 INFO L226 Difference]: Without dead ends: 201 [2020-09-25 12:20:31,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:20:31,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-25 12:20:32,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2020-09-25 12:20:32,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 12:20:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2020-09-25 12:20:32,023 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 31 [2020-09-25 12:20:32,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:32,023 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2020-09-25 12:20:32,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:20:32,024 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2020-09-25 12:20:32,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 12:20:32,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:32,027 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] [2020-09-25 12:20:32,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:20:32,028 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:32,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:32,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1870874818, now seen corresponding path program 1 times [2020-09-25 12:20:32,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:32,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043720805] [2020-09-25 12:20:32,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:32,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:32,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:32,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:32,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:32,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:20:32,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:20:32,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-09-25 12:20:32,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:32,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:20:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 12:20:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:20:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:33,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:33,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:33,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:33,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:33,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:33,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:20:33,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:33,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:33,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:33,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:33,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:20:33,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043720805] [2020-09-25 12:20:33,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:33,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:20:33,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306245960] [2020-09-25 12:20:33,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:20:33,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:33,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:20:33,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:20:33,088 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand 7 states. [2020-09-25 12:20:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:33,558 INFO L93 Difference]: Finished difference Result 277 states and 304 transitions. [2020-09-25 12:20:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:20:33,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-09-25 12:20:33,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:33,561 INFO L225 Difference]: With dead ends: 277 [2020-09-25 12:20:33,562 INFO L226 Difference]: Without dead ends: 271 [2020-09-25 12:20:33,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:20:33,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-09-25 12:20:33,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 213. [2020-09-25 12:20:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-25 12:20:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 238 transitions. [2020-09-25 12:20:33,579 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 238 transitions. Word has length 54 [2020-09-25 12:20:33,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:33,580 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 238 transitions. [2020-09-25 12:20:33,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:20:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 238 transitions. [2020-09-25 12:20:33,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 12:20:33,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:33,583 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:33,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:20:33,583 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:33,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:33,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1812282598, now seen corresponding path program 1 times [2020-09-25 12:20:33,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:33,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493236239] [2020-09-25 12:20:33,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:33,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:33,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:33,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:34,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:34,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 12:20:34,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:20:34,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1277 [2020-09-25 12:20:34,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:34,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:20:34,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 12:20:34,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:20:34,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:34,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:34,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:34,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:34,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:34,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:34,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:20:34,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:34,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:20:34,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493236239] [2020-09-25 12:20:34,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:34,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:20:34,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499249390] [2020-09-25 12:20:34,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:20:34,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:34,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:20:34,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:20:34,988 INFO L87 Difference]: Start difference. First operand 213 states and 238 transitions. Second operand 7 states. [2020-09-25 12:20:35,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:35,360 INFO L93 Difference]: Finished difference Result 280 states and 307 transitions. [2020-09-25 12:20:35,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:20:35,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-09-25 12:20:35,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:35,362 INFO L225 Difference]: With dead ends: 280 [2020-09-25 12:20:35,363 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 12:20:35,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:20:35,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 12:20:35,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 210. [2020-09-25 12:20:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-09-25 12:20:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2020-09-25 12:20:35,377 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 60 [2020-09-25 12:20:35,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:35,378 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2020-09-25 12:20:35,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:20:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2020-09-25 12:20:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 12:20:35,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:35,381 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:35,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:20:35,381 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:35,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:35,381 INFO L82 PathProgramCache]: Analyzing trace with hash -775600822, now seen corresponding path program 1 times [2020-09-25 12:20:35,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:35,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354246579] [2020-09-25 12:20:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:35,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:35,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:35,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:36,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:36,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 12:20:36,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:20:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1205 [2020-09-25 12:20:36,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:36,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:20:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 12:20:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:20:36,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:36,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:36,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:36,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:36,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:36,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:36,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:20:36,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:36,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:36,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:20:36,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354246579] [2020-09-25 12:20:36,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:36,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:20:36,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749011510] [2020-09-25 12:20:36,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:20:36,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:36,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:20:36,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:20:36,716 INFO L87 Difference]: Start difference. First operand 210 states and 234 transitions. Second operand 7 states. [2020-09-25 12:20:37,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:37,108 INFO L93 Difference]: Finished difference Result 262 states and 288 transitions. [2020-09-25 12:20:37,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:20:37,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-09-25 12:20:37,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:37,111 INFO L225 Difference]: With dead ends: 262 [2020-09-25 12:20:37,111 INFO L226 Difference]: Without dead ends: 238 [2020-09-25 12:20:37,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:20:37,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-25 12:20:37,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 205. [2020-09-25 12:20:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-25 12:20:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 228 transitions. [2020-09-25 12:20:37,132 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 228 transitions. Word has length 60 [2020-09-25 12:20:37,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:37,132 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 228 transitions. [2020-09-25 12:20:37,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:20:37,132 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 228 transitions. [2020-09-25 12:20:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 12:20:37,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:37,137 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:37,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:20:37,138 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:37,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:37,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1984006919, now seen corresponding path program 1 times [2020-09-25 12:20:37,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:37,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959442437] [2020-09-25 12:20:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:37,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:37,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:39,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:41,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:41,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 12:20:41,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:20:41,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4388 [2020-09-25 12:20:41,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:41,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:41,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:20:41,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 12:20:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:20:41,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:41,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:41,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:41,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:41,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:41,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:41,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:20:41,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:41,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:41,737 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 12:20:41,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959442437] [2020-09-25 12:20:41,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:41,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:20:41,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828345804] [2020-09-25 12:20:41,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:20:41,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:41,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:20:41,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:20:41,741 INFO L87 Difference]: Start difference. First operand 205 states and 228 transitions. Second operand 11 states. [2020-09-25 12:20:42,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:42,357 INFO L93 Difference]: Finished difference Result 286 states and 313 transitions. [2020-09-25 12:20:42,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:20:42,358 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-09-25 12:20:42,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:42,362 INFO L225 Difference]: With dead ends: 286 [2020-09-25 12:20:42,362 INFO L226 Difference]: Without dead ends: 280 [2020-09-25 12:20:42,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:20:42,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-09-25 12:20:42,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 224. [2020-09-25 12:20:42,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 12:20:42,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 249 transitions. [2020-09-25 12:20:42,376 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 249 transitions. Word has length 65 [2020-09-25 12:20:42,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:42,377 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 249 transitions. [2020-09-25 12:20:42,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:20:42,377 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 249 transitions. [2020-09-25 12:20:42,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 12:20:42,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:42,378 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:42,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:20:42,378 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:42,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:42,379 INFO L82 PathProgramCache]: Analyzing trace with hash -611343915, now seen corresponding path program 1 times [2020-09-25 12:20:42,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:42,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455837368] [2020-09-25 12:20:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:42,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:42,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:42,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:43,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:45,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:45,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 12:20:45,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:20:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3410 [2020-09-25 12:20:45,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:45,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:20:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 12:20:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:20:45,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:45,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:45,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:45,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:45,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:45,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:20:45,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:45,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:45,956 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 12:20:45,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455837368] [2020-09-25 12:20:45,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:45,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:20:45,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752228050] [2020-09-25 12:20:45,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:20:45,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:45,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:20:45,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:20:45,959 INFO L87 Difference]: Start difference. First operand 224 states and 249 transitions. Second operand 11 states. [2020-09-25 12:20:46,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:46,597 INFO L93 Difference]: Finished difference Result 302 states and 332 transitions. [2020-09-25 12:20:46,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:20:46,598 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-09-25 12:20:46,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:46,602 INFO L225 Difference]: With dead ends: 302 [2020-09-25 12:20:46,603 INFO L226 Difference]: Without dead ends: 296 [2020-09-25 12:20:46,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:20:46,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-25 12:20:46,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 236. [2020-09-25 12:20:46,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-09-25 12:20:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 262 transitions. [2020-09-25 12:20:46,621 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 262 transitions. Word has length 65 [2020-09-25 12:20:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:46,622 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 262 transitions. [2020-09-25 12:20:46,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:20:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 262 transitions. [2020-09-25 12:20:46,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 12:20:46,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:46,623 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:20:46,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:20:46,624 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:46,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:46,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1316127329, now seen corresponding path program 1 times [2020-09-25 12:20:46,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:46,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849620184] [2020-09-25 12:20:46,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:46,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:47,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:47,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:51,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:51,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:51,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:20:51,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:20:51,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:20:51,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:51,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:20:51,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 12:20:51,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:20:51,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:51,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:51,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:51,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:51,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:51,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:51,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:20:51,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:51,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:51,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:51,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:51,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:51,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:20:51,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849620184] [2020-09-25 12:20:51,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:51,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:20:51,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760694879] [2020-09-25 12:20:51,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:20:51,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:51,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:20:51,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:20:51,987 INFO L87 Difference]: Start difference. First operand 236 states and 262 transitions. Second operand 14 states. [2020-09-25 12:20:53,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:53,250 INFO L93 Difference]: Finished difference Result 306 states and 336 transitions. [2020-09-25 12:20:53,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 12:20:53,251 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-09-25 12:20:53,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:53,254 INFO L225 Difference]: With dead ends: 306 [2020-09-25 12:20:53,254 INFO L226 Difference]: Without dead ends: 300 [2020-09-25 12:20:53,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2020-09-25 12:20:53,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-25 12:20:53,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 250. [2020-09-25 12:20:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-09-25 12:20:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 278 transitions. [2020-09-25 12:20:53,263 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 278 transitions. Word has length 71 [2020-09-25 12:20:53,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:53,264 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 278 transitions. [2020-09-25 12:20:53,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:20:53,264 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 278 transitions. [2020-09-25 12:20:53,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 12:20:53,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:53,265 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:20:53,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:20:53,266 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:53,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:53,266 INFO L82 PathProgramCache]: Analyzing trace with hash -279445553, now seen corresponding path program 1 times [2020-09-25 12:20:53,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:53,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946500133] [2020-09-25 12:20:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:53,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:53,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:53,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:55,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:20:55,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:20:55,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2091 [2020-09-25 12:20:55,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:55,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:20:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 12:20:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:20:55,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:20:55,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:55,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:55,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:55,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:55,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:20:55,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:55,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:55,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:20:55,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:20:55,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946500133] [2020-09-25 12:20:55,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:55,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:20:55,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513053284] [2020-09-25 12:20:55,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:20:55,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:55,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:20:55,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:20:55,695 INFO L87 Difference]: Start difference. First operand 250 states and 278 transitions. Second operand 16 states. [2020-09-25 12:20:57,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:57,122 INFO L93 Difference]: Finished difference Result 315 states and 346 transitions. [2020-09-25 12:20:57,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 12:20:57,123 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-25 12:20:57,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:57,125 INFO L225 Difference]: With dead ends: 315 [2020-09-25 12:20:57,125 INFO L226 Difference]: Without dead ends: 309 [2020-09-25 12:20:57,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2020-09-25 12:20:57,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-09-25 12:20:57,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 254. [2020-09-25 12:20:57,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-25 12:20:57,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 282 transitions. [2020-09-25 12:20:57,135 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 282 transitions. Word has length 71 [2020-09-25 12:20:57,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:57,136 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 282 transitions. [2020-09-25 12:20:57,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:20:57,136 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 282 transitions. [2020-09-25 12:20:57,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 12:20:57,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:57,137 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:20:57,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:20:57,137 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:57,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:57,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1095319059, now seen corresponding path program 1 times [2020-09-25 12:20:57,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:57,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102414214] [2020-09-25 12:20:57,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:57,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:57,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:57,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:59,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:59,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:20:59,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:20:59,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1972 [2020-09-25 12:20:59,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:59,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:20:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 12:20:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:20:59,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:20:59,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:59,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:59,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:59,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:59,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:59,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:20:59,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:59,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:59,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:20:59,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102414214] [2020-09-25 12:20:59,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:59,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:20:59,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132773433] [2020-09-25 12:20:59,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:20:59,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:59,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:20:59,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:20:59,399 INFO L87 Difference]: Start difference. First operand 254 states and 282 transitions. Second operand 16 states. [2020-09-25 12:21:00,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:00,875 INFO L93 Difference]: Finished difference Result 329 states and 360 transitions. [2020-09-25 12:21:00,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 12:21:00,876 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-25 12:21:00,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:00,879 INFO L225 Difference]: With dead ends: 329 [2020-09-25 12:21:00,879 INFO L226 Difference]: Without dead ends: 323 [2020-09-25 12:21:00,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 12:21:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-09-25 12:21:00,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 256. [2020-09-25 12:21:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-25 12:21:00,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 285 transitions. [2020-09-25 12:21:00,889 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 285 transitions. Word has length 71 [2020-09-25 12:21:00,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:00,889 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 285 transitions. [2020-09-25 12:21:00,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:21:00,890 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 285 transitions. [2020-09-25 12:21:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 12:21:00,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:00,891 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:00,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:21:00,891 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:00,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:00,891 INFO L82 PathProgramCache]: Analyzing trace with hash -58637283, now seen corresponding path program 1 times [2020-09-25 12:21:00,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:00,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705530216] [2020-09-25 12:21:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:00,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:00,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:01,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:01,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:05,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:21:05,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:21:05,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4413 [2020-09-25 12:21:05,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:05,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:05,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:21:05,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 12:21:05,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:21:05,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:05,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:05,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:05,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:05,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:05,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:21:05,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:05,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:05,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:21:05,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705530216] [2020-09-25 12:21:05,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:05,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:21:05,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12482351] [2020-09-25 12:21:05,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:21:05,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:05,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:21:05,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:21:05,841 INFO L87 Difference]: Start difference. First operand 256 states and 285 transitions. Second operand 16 states. [2020-09-25 12:21:07,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:07,524 INFO L93 Difference]: Finished difference Result 338 states and 370 transitions. [2020-09-25 12:21:07,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 12:21:07,525 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-25 12:21:07,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:07,526 INFO L225 Difference]: With dead ends: 338 [2020-09-25 12:21:07,527 INFO L226 Difference]: Without dead ends: 332 [2020-09-25 12:21:07,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 12:21:07,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-09-25 12:21:07,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 249. [2020-09-25 12:21:07,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-25 12:21:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 276 transitions. [2020-09-25 12:21:07,545 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 276 transitions. Word has length 71 [2020-09-25 12:21:07,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:07,546 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 276 transitions. [2020-09-25 12:21:07,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:21:07,546 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 276 transitions. [2020-09-25 12:21:07,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 12:21:07,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:07,547 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 12:21:07,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 12:21:07,547 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:07,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:07,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1279761314, now seen corresponding path program 2 times [2020-09-25 12:21:07,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:07,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015308669] [2020-09-25 12:21:07,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:07,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:08,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:12,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:21:12,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:21:12,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:21:12,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:12,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:21:12,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 12:21:12,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:21:12,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:12,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:12,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:12,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:12,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:21:12,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:12,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:12,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:21:12,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015308669] [2020-09-25 12:21:12,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:12,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 12:21:12,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807346991] [2020-09-25 12:21:12,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 12:21:12,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:12,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 12:21:12,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:21:12,877 INFO L87 Difference]: Start difference. First operand 249 states and 276 transitions. Second operand 18 states. [2020-09-25 12:21:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:14,495 INFO L93 Difference]: Finished difference Result 375 states and 411 transitions. [2020-09-25 12:21:14,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 12:21:14,496 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 76 [2020-09-25 12:21:14,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:14,498 INFO L225 Difference]: With dead ends: 375 [2020-09-25 12:21:14,498 INFO L226 Difference]: Without dead ends: 351 [2020-09-25 12:21:14,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 12:21:14,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-09-25 12:21:14,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 270. [2020-09-25 12:21:14,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-09-25 12:21:14,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 299 transitions. [2020-09-25 12:21:14,509 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 299 transitions. Word has length 76 [2020-09-25 12:21:14,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:14,510 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 299 transitions. [2020-09-25 12:21:14,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 12:21:14,510 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 299 transitions. [2020-09-25 12:21:14,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 12:21:14,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:14,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:14,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 12:21:14,512 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:14,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:14,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1620912108, now seen corresponding path program 1 times [2020-09-25 12:21:14,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:14,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707578323] [2020-09-25 12:21:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:14,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:14,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:14,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking...