/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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-ext3-properties/sll_length_check-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:32:44,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:32:44,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:32:44,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:32:44,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:32:44,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:32:44,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:32:45,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:32:45,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:32:45,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:32:45,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:32:45,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:32:45,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:32:45,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:32:45,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:32:45,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:32:45,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:32:45,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:32:45,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:32:45,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:32:45,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:32:45,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:32:45,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:32:45,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:32:45,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:32:45,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:32:45,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:32:45,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:32:45,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:32:45,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:32:45,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:32:45,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:32:45,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:32:45,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:32:45,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:32:45,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:32:45,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:32:45,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:32:45,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:32:45,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:32:45,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:32:45,047 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 05:32:45,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:32:45,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:32:45,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:32:45,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:32:45,074 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:32:45,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:32:45,075 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:32:45,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:32:45,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:32:45,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:32:45,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:32:45,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:32:45,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:32:45,076 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:32:45,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:32:45,076 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:32:45,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:32:45,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:32:45,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:32:45,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:32:45,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:32:45,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:32:45,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:32:45,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:32:45,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:32:45,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:32:45,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:32:45,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:32:45,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:32:45,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:32:45,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:32:45,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:32:45,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:32:45,544 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:32:45,544 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:32:45,545 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-25 05:32:45,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72fcd9ef1/91b858344f354f05bbc102c6c811862d/FLAG1473732d2 [2020-09-25 05:32:46,189 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:32:46,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-25 05:32:46,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72fcd9ef1/91b858344f354f05bbc102c6c811862d/FLAG1473732d2 [2020-09-25 05:32:46,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72fcd9ef1/91b858344f354f05bbc102c6c811862d [2020-09-25 05:32:46,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:32:46,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:32:46,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:46,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:32:46,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:32:46,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:46" (1/1) ... [2020-09-25 05:32:46,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@688a0e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:46, skipping insertion in model container [2020-09-25 05:32:46,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:46" (1/1) ... [2020-09-25 05:32:46,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:32:46,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:32:47,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:47,057 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:32:47,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:47,165 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:32:47,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:47 WrapperNode [2020-09-25 05:32:47,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:47,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:32:47,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:32:47,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:32:47,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:47" (1/1) ... [2020-09-25 05:32:47,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:47" (1/1) ... [2020-09-25 05:32:47,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:47" (1/1) ... [2020-09-25 05:32:47,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:47" (1/1) ... [2020-09-25 05:32:47,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:47" (1/1) ... [2020-09-25 05:32:47,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:47" (1/1) ... [2020-09-25 05:32:47,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:47" (1/1) ... [2020-09-25 05:32:47,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:32:47,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:32:47,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:32:47,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:32:47,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:47" (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 05:32:47,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:32:47,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:32:47,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 05:32:47,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 05:32:47,310 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 05:32:47,310 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 05:32:47,311 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-25 05:32:47,311 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 05:32:47,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:32:47,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:32:47,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:32:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 05:32:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 05:32:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 05:32:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 05:32:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 05:32:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 05:32:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 05:32:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 05:32:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 05:32:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 05:32:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 05:32:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 05:32:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 05:32:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 05:32:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 05:32:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 05:32:47,315 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 05:32:47,315 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 05:32:47,315 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 05:32:47,315 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 05:32:47,315 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 05:32:47,315 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 05:32:47,316 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 05:32:47,316 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 05:32:47,316 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 05:32:47,316 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 05:32:47,316 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 05:32:47,316 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 05:32:47,317 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 05:32:47,317 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 05:32:47,317 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 05:32:47,317 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 05:32:47,317 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 05:32:47,317 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 05:32:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 05:32:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 05:32:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 05:32:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 05:32:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 05:32:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 05:32:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 05:32:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 05:32:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 05:32:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 05:32:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 05:32:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 05:32:47,320 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 05:32:47,320 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 05:32:47,320 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 05:32:47,320 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 05:32:47,320 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 05:32:47,320 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 05:32:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 05:32:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 05:32:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 05:32:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 05:32:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 05:32:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 05:32:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 05:32:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 05:32:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 05:32:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 05:32:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 05:32:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 05:32:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 05:32:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:32:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 05:32:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 05:32:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 05:32:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 05:32:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 05:32:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 05:32:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 05:32:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 05:32:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 05:32:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 05:32:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 05:32:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 05:32:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 05:32:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 05:32:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 05:32:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 05:32:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 05:32:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 05:32:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 05:32:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 05:32:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 05:32:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 05:32:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 05:32:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 05:32:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 05:32:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 05:32:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 05:32:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 05:32:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 05:32:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 05:32:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 05:32:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 05:32:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 05:32:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 05:32:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 05:32:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 05:32:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 05:32:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 05:32:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 05:32:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 05:32:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 05:32:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 05:32:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 05:32:47,330 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-25 05:32:47,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 05:32:47,330 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 05:32:47,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:32:47,330 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:32:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:32:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:32:47,678 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 05:32:47,868 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:32:47,869 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 05:32:47,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:47 BoogieIcfgContainer [2020-09-25 05:32:47,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:32:47,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:32:47,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:32:47,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:32:47,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:32:46" (1/3) ... [2020-09-25 05:32:47,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389b0c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:47, skipping insertion in model container [2020-09-25 05:32:47,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:47" (2/3) ... [2020-09-25 05:32:47,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389b0c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:47, skipping insertion in model container [2020-09-25 05:32:47,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:47" (3/3) ... [2020-09-25 05:32:47,884 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_length_check-1.i [2020-09-25 05:32:47,896 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:32:47,906 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:32:47,928 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:32:47,955 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:32:47,955 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:32:47,955 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:32:47,956 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:32:47,956 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:32:47,956 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:32:47,956 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:32:47,956 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:32:47,976 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-09-25 05:32:47,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 05:32:47,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:47,985 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] [2020-09-25 05:32:47,986 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:47,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:47,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1731717969, now seen corresponding path program 1 times [2020-09-25 05:32:48,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:48,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548678058] [2020-09-25 05:32:48,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:48,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:48,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:48,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:48,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 05:32:48,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:48,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-09-25 05:32:48,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:48,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 05:32:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:32:48,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:48,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:48,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:48,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:48,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:48,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:32:48,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:48,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:48,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:48,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 05:32:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:48,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:48,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:32:48,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:48,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:32:48,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:48,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:48,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:32:48,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:48,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:48,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 05:32:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:48,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:48,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:48,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:32:48,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:48,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:32:48,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:48,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:48,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:32:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:48,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:48,699 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 05:32:48,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548678058] [2020-09-25 05:32:48,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:48,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:32:48,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163796636] [2020-09-25 05:32:48,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:32:48,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:48,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:32:48,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:32:48,731 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 4 states. [2020-09-25 05:32:48,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:48,944 INFO L93 Difference]: Finished difference Result 154 states and 184 transitions. [2020-09-25 05:32:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:32:48,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-25 05:32:48,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:48,960 INFO L225 Difference]: With dead ends: 154 [2020-09-25 05:32:48,960 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 05:32:48,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:32:48,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 05:32:49,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2020-09-25 05:32:49,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 05:32:49,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-25 05:32:49,025 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 29 [2020-09-25 05:32:49,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:49,025 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-25 05:32:49,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:32:49,026 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-25 05:32:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 05:32:49,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:49,028 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] [2020-09-25 05:32:49,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:32:49,028 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:49,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:49,029 INFO L82 PathProgramCache]: Analyzing trace with hash 632987872, now seen corresponding path program 1 times [2020-09-25 05:32:49,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:49,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190411846] [2020-09-25 05:32:49,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:49,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:49,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:49,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:49,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:49,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:49,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:49,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 05:32:49,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:32:49,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-09-25 05:32:49,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:49,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:49,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:32:49,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:32:49,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 05:32:49,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:49,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:49,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:49,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:49,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:49,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:32:49,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:49,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:49,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:49,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 05:32:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:49,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:49,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:49,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:32:49,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:49,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 05:32:49,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:49,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:32:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:32:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:32:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:49,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 05:32:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:49,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:49,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:49,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:32:49,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:49,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:32:49,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:49,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:32:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:49,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:49,849 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 05:32:49,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190411846] [2020-09-25 05:32:49,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:49,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:32:49,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481064512] [2020-09-25 05:32:49,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:32:49,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:49,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:32:49,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:32:49,854 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 7 states. [2020-09-25 05:32:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:50,211 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2020-09-25 05:32:50,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:32:50,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 05:32:50,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:50,214 INFO L225 Difference]: With dead ends: 114 [2020-09-25 05:32:50,215 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 05:32:50,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:32:50,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 05:32:50,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 67. [2020-09-25 05:32:50,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 05:32:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-09-25 05:32:50,230 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 33 [2020-09-25 05:32:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:50,231 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-09-25 05:32:50,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:32:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-09-25 05:32:50,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 05:32:50,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:50,234 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] [2020-09-25 05:32:50,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:32:50,234 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:50,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:50,235 INFO L82 PathProgramCache]: Analyzing trace with hash -2090477770, now seen corresponding path program 1 times [2020-09-25 05:32:50,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:50,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310008777] [2020-09-25 05:32:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:50,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:50,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:50,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:50,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:50,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:50,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:50,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:51,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:52,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:52,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 05:32:52,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:32:52,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2538 [2020-09-25 05:32:52,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:52,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:32:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 05:32:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:32:52,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:52,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:52,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:52,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:52,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:52,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:52,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:32:52,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:52,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:52,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:52,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:52,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:52,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:52,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:32:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:52,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:52,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:52,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:32:52,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:52,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:32:52,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:52,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:52,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:32:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:52,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:52,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:32:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:52,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:52,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:52,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:32:52,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:52,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:32:52,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:52,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:32:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:52,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:52,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310008777] [2020-09-25 05:32:52,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:52,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:32:52,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122452421] [2020-09-25 05:32:52,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:32:52,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:52,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:32:52,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:32:52,871 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 5 states. [2020-09-25 05:32:53,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:53,037 INFO L93 Difference]: Finished difference Result 129 states and 142 transitions. [2020-09-25 05:32:53,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:32:53,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-09-25 05:32:53,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:53,041 INFO L225 Difference]: With dead ends: 129 [2020-09-25 05:32:53,042 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 05:32:53,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:32:53,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 05:32:53,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2020-09-25 05:32:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-25 05:32:53,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2020-09-25 05:32:53,054 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 41 [2020-09-25 05:32:53,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:53,054 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2020-09-25 05:32:53,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:32:53,054 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2020-09-25 05:32:53,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 05:32:53,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:53,056 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] [2020-09-25 05:32:53,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:32:53,056 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:53,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:53,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1545332509, now seen corresponding path program 1 times [2020-09-25 05:32:53,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:53,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680666945] [2020-09-25 05:32:53,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:53,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:53,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:53,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:53,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:53,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:54,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:54,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:56,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:58,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 05:32:58,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:32:58,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:32:58,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:58,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:32:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:32:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:32:58,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:58,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:58,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:58,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:58,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:58,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:32:58,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:58,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:58,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:58,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:58,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:58,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 05:32:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:58,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:32:58,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:58,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:32:58,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:58,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:58,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:58,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:32:58,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:58,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:58,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-25 05:32:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:58,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:58,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:32:58,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:32:58,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:58,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:32:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:58,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:58,177 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 05:32:58,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680666945] [2020-09-25 05:32:58,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:58,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:32:58,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389917468] [2020-09-25 05:32:58,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:32:58,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:58,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:32:58,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:32:58,181 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand 6 states. [2020-09-25 05:32:58,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:58,609 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2020-09-25 05:32:58,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:32:58,610 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-09-25 05:32:58,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:58,612 INFO L225 Difference]: With dead ends: 131 [2020-09-25 05:32:58,612 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 05:32:58,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:32:58,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 05:32:58,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 68. [2020-09-25 05:32:58,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 05:32:58,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2020-09-25 05:32:58,623 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 42 [2020-09-25 05:32:58,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:58,623 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2020-09-25 05:32:58,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:32:58,623 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2020-09-25 05:32:58,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 05:32:58,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:58,625 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] [2020-09-25 05:32:58,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:32:58,626 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:58,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:58,626 INFO L82 PathProgramCache]: Analyzing trace with hash 226602169, now seen corresponding path program 1 times [2020-09-25 05:32:58,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:58,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404187033] [2020-09-25 05:32:58,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:58,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:59,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:59,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:32:59,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:32:59,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 812 [2020-09-25 05:32:59,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:59,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:59,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:32:59,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:32:59,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:32:59,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:59,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:59,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:59,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:59,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:59,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:59,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:32:59,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:59,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:59,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:32:59,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:32:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:59,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:59,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:59,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:32:59,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:59,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:32:59,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:59,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:32:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:32:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:32:59,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:59,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-25 05:32:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:59,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:59,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:59,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:32:59,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:32:59,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:59,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:32:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:59,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:59,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404187033] [2020-09-25 05:32:59,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:59,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:32:59,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854316719] [2020-09-25 05:32:59,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:32:59,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:59,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:32:59,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:32:59,615 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 9 states. [2020-09-25 05:33:00,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:00,084 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2020-09-25 05:33:00,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:33:00,085 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-09-25 05:33:00,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:00,086 INFO L225 Difference]: With dead ends: 137 [2020-09-25 05:33:00,086 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 05:33:00,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:33:00,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 05:33:00,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 79. [2020-09-25 05:33:00,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 05:33:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2020-09-25 05:33:00,097 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 43 [2020-09-25 05:33:00,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:00,098 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2020-09-25 05:33:00,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:33:00,098 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2020-09-25 05:33:00,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 05:33:00,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:00,099 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] [2020-09-25 05:33:00,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:33:00,100 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:00,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:00,100 INFO L82 PathProgramCache]: Analyzing trace with hash 360366586, now seen corresponding path program 1 times [2020-09-25 05:33:00,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:00,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638029863] [2020-09-25 05:33:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:00,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:00,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:02,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:02,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 05:33:02,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:33:02,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2262 [2020-09-25 05:33:02,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:02,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:02,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:02,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:33:02,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:33:02,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:02,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:02,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:02,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:02,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:02,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:02,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:02,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:02,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:02,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:02,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:02,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:02,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 05:33:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:02,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:02,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:02,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:33:02,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:02,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 05:33:02,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:02,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:02,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:02,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:33:02,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:33:02,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:02,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 05:33:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:02,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:02,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:02,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:33:02,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:02,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:33:02,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:02,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:33:02,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:02,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:02,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638029863] [2020-09-25 05:33:02,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:02,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:33:02,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76522458] [2020-09-25 05:33:02,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:33:02,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:02,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:33:02,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:33:02,554 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 9 states. [2020-09-25 05:33:02,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:02,910 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2020-09-25 05:33:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:33:02,910 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-09-25 05:33:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:02,912 INFO L225 Difference]: With dead ends: 137 [2020-09-25 05:33:02,912 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 05:33:02,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:33:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 05:33:02,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 94. [2020-09-25 05:33:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 05:33:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2020-09-25 05:33:02,922 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 44 [2020-09-25 05:33:02,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:02,923 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2020-09-25 05:33:02,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:33:02,923 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2020-09-25 05:33:02,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 05:33:02,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:02,925 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] [2020-09-25 05:33:02,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:33:02,925 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:02,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:02,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2119311204, now seen corresponding path program 1 times [2020-09-25 05:33:02,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:02,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486365697] [2020-09-25 05:33:02,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:02,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:02,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:02,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:03,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:03,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:03,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:06,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:07,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:07,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 05:33:07,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:07,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:33:07,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:07,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:07,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:33:07,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 05:33:07,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:33:07,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:07,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:07,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:07,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:07,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:07,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:07,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:33:07,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:07,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:07,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:08,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:33:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:08,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:08,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:08,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:33:08,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:08,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 05:33:08,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:08,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:33:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:33:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:08,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 05:33:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:08,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:08,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:08,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:33:08,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:08,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:33:08,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:08,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:33:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:08,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486365697] [2020-09-25 05:33:08,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:08,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:33:08,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143619831] [2020-09-25 05:33:08,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:33:08,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:08,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:33:08,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:33:08,159 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 10 states. [2020-09-25 05:33:08,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:08,676 INFO L93 Difference]: Finished difference Result 143 states and 159 transitions. [2020-09-25 05:33:08,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:33:08,676 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-09-25 05:33:08,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:08,678 INFO L225 Difference]: With dead ends: 143 [2020-09-25 05:33:08,678 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 05:33:08,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-25 05:33:08,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 05:33:08,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 93. [2020-09-25 05:33:08,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 05:33:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2020-09-25 05:33:08,702 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 52 [2020-09-25 05:33:08,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:08,702 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2020-09-25 05:33:08,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:33:08,702 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2020-09-25 05:33:08,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 05:33:08,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:08,707 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:33:08,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:33:08,707 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:08,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:08,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1801872195, now seen corresponding path program 2 times [2020-09-25 05:33:08,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:08,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163521692] [2020-09-25 05:33:08,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:08,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:08,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:08,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:10,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:10,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 05:33:10,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:33:10,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2083 [2020-09-25 05:33:10,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:10,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:10,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:33:10,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:33:10,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:33:10,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:10,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:10,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:10,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:10,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:10,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:10,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:10,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:10,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:10,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:10,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:10,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:10,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 05:33:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:10,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:10,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:10,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:33:10,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:10,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 05:33:10,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:10,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:10,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:33:10,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:33:10,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:33:10,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:11,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 05:33:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:11,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:11,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:11,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:33:11,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:11,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:11,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:11,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:33:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:11,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:11,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163521692] [2020-09-25 05:33:11,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:11,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:33:11,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504413326] [2020-09-25 05:33:11,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:33:11,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:11,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:33:11,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:33:11,060 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand 11 states. [2020-09-25 05:33:11,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:11,619 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2020-09-25 05:33:11,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 05:33:11,620 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-09-25 05:33:11,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:11,621 INFO L225 Difference]: With dead ends: 151 [2020-09-25 05:33:11,621 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 05:33:11,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-09-25 05:33:11,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 05:33:11,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 108. [2020-09-25 05:33:11,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-25 05:33:11,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2020-09-25 05:33:11,632 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 53 [2020-09-25 05:33:11,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:11,632 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2020-09-25 05:33:11,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:33:11,632 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2020-09-25 05:33:11,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 05:33:11,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:11,634 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:33:11,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:33:11,634 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:11,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:11,634 INFO L82 PathProgramCache]: Analyzing trace with hash -2096888703, now seen corresponding path program 1 times [2020-09-25 05:33:11,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:11,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513043406] [2020-09-25 05:33:11,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:11,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:11,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:12,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:16,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:16,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 05:33:16,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:33:16,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4585 [2020-09-25 05:33:16,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:16,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:16,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:33:16,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:33:16,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:33:16,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:33:16,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:16,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:16,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:16,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:16,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:16,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:33:16,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:16,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:16,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:16,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 05:33:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:16,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:16,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:16,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:33:16,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:16,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 05:33:16,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:16,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:33:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:33:16,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:16,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 05:33:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:16,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:16,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:16,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:33:16,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:16,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:16,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:16,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:16,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:16,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:33:16,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:16,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:16,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513043406] [2020-09-25 05:33:16,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:16,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:33:16,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678529208] [2020-09-25 05:33:16,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:33:16,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:16,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:33:16,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:33:16,434 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand 11 states. [2020-09-25 05:33:16,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:16,951 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2020-09-25 05:33:16,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 05:33:16,952 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-09-25 05:33:16,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:16,953 INFO L225 Difference]: With dead ends: 136 [2020-09-25 05:33:16,953 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 05:33:16,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-09-25 05:33:16,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 05:33:16,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 86. [2020-09-25 05:33:16,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 05:33:16,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2020-09-25 05:33:16,966 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 54 [2020-09-25 05:33:16,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:16,966 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2020-09-25 05:33:16,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:33:16,966 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2020-09-25 05:33:16,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 05:33:16,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:16,967 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:33:16,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:33:16,967 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:16,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:16,968 INFO L82 PathProgramCache]: Analyzing trace with hash -655327975, now seen corresponding path program 2 times [2020-09-25 05:33:16,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:16,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931728580] [2020-09-25 05:33:16,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:16,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:21,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:21,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 05:33:21,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:21,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:33:21,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:21,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:21,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:33:21,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:33:21,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:33:21,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:22,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:22,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:22,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:22,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:22,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:33:22,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:22,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:22,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:22,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:33:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:22,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:22,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:22,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:33:22,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:22,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:33:22,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:22,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 05:33:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:22,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 05:33:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:22,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:22,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:22,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:33:22,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:22,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:22,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:22,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:33:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:22,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:33:22,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931728580] [2020-09-25 05:33:22,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:22,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:33:22,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047960561] [2020-09-25 05:33:22,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:33:22,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:22,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:33:22,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:33:22,094 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand 8 states. [2020-09-25 05:33:22,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:22,531 INFO L93 Difference]: Finished difference Result 179 states and 191 transitions. [2020-09-25 05:33:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:33:22,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-09-25 05:33:22,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:22,533 INFO L225 Difference]: With dead ends: 179 [2020-09-25 05:33:22,533 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 05:33:22,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:33:22,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 05:33:22,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 93. [2020-09-25 05:33:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 05:33:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2020-09-25 05:33:22,541 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 61 [2020-09-25 05:33:22,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:22,541 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2020-09-25 05:33:22,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:33:22,542 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2020-09-25 05:33:22,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 05:33:22,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:22,543 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:22,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 05:33:22,543 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:22,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:22,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1727079450, now seen corresponding path program 3 times [2020-09-25 05:33:22,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:22,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698731253] [2020-09-25 05:33:22,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:22,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:22,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:22,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:22,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 05:33:22,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:33:22,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-09-25 05:33:22,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:22,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:22,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:33:22,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:33:22,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:33:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:22,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:22,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:23,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:23,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:23,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:23,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:23,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:23,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:23,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:23,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 05:33:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:23,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:23,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:23,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 05:33:23,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:23,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 05:33:23,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:23,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:23,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:23,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:23,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:33:23,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:23,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:33:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:23,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:23,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:23,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:33:23,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:23,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:33:23,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:23,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:33:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:33:23,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:23,251 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 05:33:23,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698731253] [2020-09-25 05:33:23,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:23,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 05:33:23,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202662153] [2020-09-25 05:33:23,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 05:33:23,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:23,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 05:33:23,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:33:23,254 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand 12 states. [2020-09-25 05:33:23,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:23,704 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-09-25 05:33:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:33:23,705 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-09-25 05:33:23,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:23,706 INFO L225 Difference]: With dead ends: 107 [2020-09-25 05:33:23,706 INFO L226 Difference]: Without dead ends: 99 [2020-09-25 05:33:23,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:33:23,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-25 05:33:23,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2020-09-25 05:33:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 05:33:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2020-09-25 05:33:23,713 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 62 [2020-09-25 05:33:23,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:23,713 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2020-09-25 05:33:23,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 05:33:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2020-09-25 05:33:23,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 05:33:23,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:23,715 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:23,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 05:33:23,715 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:23,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:23,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1187742581, now seen corresponding path program 1 times [2020-09-25 05:33:23,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:23,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468909332] [2020-09-25 05:33:23,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:23,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:23,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:24,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:24,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 05:33:24,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:33:24,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-09-25 05:33:24,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:24,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:33:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 05:33:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 05:33:24,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:24,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:24,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:24,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:24,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:24,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:24,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:33:24,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:24,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:24,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:24,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 05:33:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:24,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:24,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:24,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 05:33:24,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:24,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 05:33:24,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:24,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:24,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:33:24,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:24,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:33:24,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:24,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:33:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:24,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:25,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:25,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:33:25,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:25,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 05:33:25,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:25,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:33:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:33:25,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 05:33:25,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468909332] [2020-09-25 05:33:25,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:25,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 05:33:25,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046772189] [2020-09-25 05:33:25,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 05:33:25,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:25,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 05:33:25,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:33:25,152 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand 16 states. [2020-09-25 05:33:25,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:25,974 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2020-09-25 05:33:25,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 05:33:25,975 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2020-09-25 05:33:25,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:25,976 INFO L225 Difference]: With dead ends: 114 [2020-09-25 05:33:25,976 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 05:33:25,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2020-09-25 05:33:25,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 05:33:25,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2020-09-25 05:33:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 05:33:25,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2020-09-25 05:33:25,983 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 69 [2020-09-25 05:33:25,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:25,984 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2020-09-25 05:33:25,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 05:33:25,984 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2020-09-25 05:33:25,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 05:33:25,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:25,985 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:33:25,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 05:33:25,985 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:25,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:25,986 INFO L82 PathProgramCache]: Analyzing trace with hash 979580858, now seen corresponding path program 2 times [2020-09-25 05:33:25,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:25,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651240963] [2020-09-25 05:33:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:26,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:26,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:26,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:26,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:26,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:27,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:27,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:28,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:29,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:29,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:31,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:31,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:33:31,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:33:31,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:33:31,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:31,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:33:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:33:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 05:33:31,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:31,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:31,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:31,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:31,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:31,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:31,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:33:31,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:31,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:31,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:31,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:31,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:31,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:31,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 05:33:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:31,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:31,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:31,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:31,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 05:33:31,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:33:31,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-25 05:33:31,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:31,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:33:31,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:31,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:33:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:31,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:31,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:31,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:33:31,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:31,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 05:33:31,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:31,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:31,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:33:31,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:33:31,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 05:33:31,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651240963] [2020-09-25 05:33:31,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:31,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 05:33:31,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276584689] [2020-09-25 05:33:31,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 05:33:31,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:31,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 05:33:31,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:33:31,527 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand 12 states. [2020-09-25 05:33:32,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:32,133 INFO L93 Difference]: Finished difference Result 126 states and 133 transitions. [2020-09-25 05:33:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:33:32,133 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 76 [2020-09-25 05:33:32,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:32,135 INFO L225 Difference]: With dead ends: 126 [2020-09-25 05:33:32,135 INFO L226 Difference]: Without dead ends: 121 [2020-09-25 05:33:32,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2020-09-25 05:33:32,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-25 05:33:32,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 114. [2020-09-25 05:33:32,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 05:33:32,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2020-09-25 05:33:32,144 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 76 [2020-09-25 05:33:32,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:32,144 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2020-09-25 05:33:32,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 05:33:32,145 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2020-09-25 05:33:32,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 05:33:32,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:32,146 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:32,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 05:33:32,146 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:32,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:32,146 INFO L82 PathProgramCache]: Analyzing trace with hash -446623556, now seen corresponding path program 1 times [2020-09-25 05:33:32,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:32,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399361568] [2020-09-25 05:33:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:32,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:32,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 05:33:32,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:32,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-09-25 05:33:32,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:32,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:33:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:33:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:33:32,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:32,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:32,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:32,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:32,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:32,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:33:32,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:32,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:32,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:32,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:32,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:32,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:32,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 05:33:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:32,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:32,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:33:32,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:32,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 05:33:32,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:32,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:32,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:33:32,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:33:32,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:33:32,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:32,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 05:33:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:32,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:32,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:33:32,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:32,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:33:32,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:32,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 05:33:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 05:33:32,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399361568] [2020-09-25 05:33:32,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:32,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 05:33:32,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598176096] [2020-09-25 05:33:32,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 05:33:32,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:32,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 05:33:32,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:33:32,742 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand 13 states. [2020-09-25 05:33:33,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:33,349 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2020-09-25 05:33:33,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 05:33:33,350 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 77 [2020-09-25 05:33:33,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:33,351 INFO L225 Difference]: With dead ends: 164 [2020-09-25 05:33:33,351 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 05:33:33,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2020-09-25 05:33:33,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 05:33:33,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 111. [2020-09-25 05:33:33,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-25 05:33:33,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 118 transitions. [2020-09-25 05:33:33,360 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 118 transitions. Word has length 77 [2020-09-25 05:33:33,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:33,361 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 118 transitions. [2020-09-25 05:33:33,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 05:33:33,361 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 118 transitions. [2020-09-25 05:33:33,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 05:33:33,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:33,362 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:33,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 05:33:33,362 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:33,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1305863211, now seen corresponding path program 3 times [2020-09-25 05:33:33,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:33,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146980247] [2020-09-25 05:33:33,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 05:33:33,383 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 05:33:33,384 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 05:33:33,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 05:33:33,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:33:33 BoogieIcfgContainer [2020-09-25 05:33:33,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:33:33,415 INFO L168 Benchmark]: Toolchain (without parser) took 46928.86 ms. Allocated memory was 141.0 MB in the beginning and 468.2 MB in the end (delta: 327.2 MB). Free memory was 103.1 MB in the beginning and 157.6 MB in the end (delta: -54.5 MB). Peak memory consumption was 272.7 MB. Max. memory is 7.1 GB. [2020-09-25 05:33:33,416 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-25 05:33:33,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 676.69 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 102.6 MB in the beginning and 172.6 MB in the end (delta: -70.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-25 05:33:33,417 INFO L168 Benchmark]: Boogie Preprocessor took 67.01 ms. Allocated memory is still 205.5 MB. Free memory was 172.6 MB in the beginning and 169.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-25 05:33:33,418 INFO L168 Benchmark]: RCFGBuilder took 640.56 ms. Allocated memory is still 205.5 MB. Free memory was 169.8 MB in the beginning and 123.3 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. [2020-09-25 05:33:33,419 INFO L168 Benchmark]: TraceAbstraction took 45535.56 ms. Allocated memory was 205.5 MB in the beginning and 468.2 MB in the end (delta: 262.7 MB). Free memory was 123.3 MB in the beginning and 157.6 MB in the end (delta: -34.3 MB). Peak memory consumption was 228.4 MB. Max. memory is 7.1 GB. [2020-09-25 05:33:33,422 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 676.69 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 102.6 MB in the beginning and 172.6 MB in the end (delta: -70.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.01 ms. Allocated memory is still 205.5 MB. Free memory was 172.6 MB in the beginning and 169.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 640.56 ms. Allocated memory is still 205.5 MB. Free memory was 169.8 MB in the beginning and 123.3 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45535.56 ms. Allocated memory was 205.5 MB in the beginning and 468.2 MB in the end (delta: 262.7 MB). Free memory was 123.3 MB in the beginning and 157.6 MB in the end (delta: -34.3 MB). Peak memory consumption was 228.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L592] int len = 2; [L593] len < 32 && __VERIFIER_nondet_int() [L593] len < 32 && __VERIFIER_nondet_int() [L593] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L596] CALL, EXPR sll_create(len + 1) [L564] SLL head = ((void *)0); [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND FALSE !(len > 0) [L574] return head; [L596] RET, EXPR sll_create(len + 1) [L596] SLL s = sll_create(len + 1); [L597] CALL, EXPR sll_length(s) [L577] int len = 0; [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND FALSE !(\read(head)) [L582] return len; [L597] RET, EXPR sll_length(s) [L597] COND TRUE len != sll_length(s) [L602] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.4s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 850 SDtfs, 1757 SDslu, 1938 SDs, 0 SdLazy, 4099 SolverSat, 255 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 299 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 263 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 38.1s InterpolantComputationTime, 819 NumberOfCodeBlocks, 819 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 722 ConstructedInterpolants, 0 QuantifiedInterpolants, 104722 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 119/168 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...