/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=0.6 --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_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:41:33,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:41:33,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:41:33,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:41:33,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:41:33,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:41:33,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:41:33,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:41:33,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:41:33,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:41:33,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:41:33,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:41:33,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:41:33,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:41:33,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:41:33,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:41:33,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:41:33,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:41:33,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:41:33,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:41:33,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:41:33,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:41:33,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:41:33,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:41:33,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:41:33,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:41:33,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:41:33,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:41:33,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:41:33,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:41:33,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:41:33,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:41:33,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:41:33,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:41:33,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:41:33,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:41:33,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:41:33,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:41:33,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:41:33,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:41:33,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:41:33,519 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 06:41:33,569 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:41:33,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:41:33,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:41:33,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:41:33,571 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:41:33,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:41:33,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:41:33,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:41:33,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:41:33,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:41:33,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:41:33,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:41:33,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:41:33,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:41:33,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:41:33,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:41:33,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:41:33,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:41:33,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:41:33,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:41:33,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:41:33,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:41:33,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:41:33,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:41:33,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:41:33,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:41:33,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:41:33,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:41:33,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:41:33,580 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:41:34,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:41:34,092 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:41:34,101 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:41:34,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:41:34,104 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:41:34,105 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-25 06:41:34,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af52c4021/2807c7e816574992ad242ca648b47f55/FLAG709040974 [2020-09-25 06:41:34,890 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:41:34,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-25 06:41:34,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af52c4021/2807c7e816574992ad242ca648b47f55/FLAG709040974 [2020-09-25 06:41:35,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af52c4021/2807c7e816574992ad242ca648b47f55 [2020-09-25 06:41:35,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:41:35,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:41:35,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:35,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:41:35,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:41:35,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:35,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fbc2ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35, skipping insertion in model container [2020-09-25 06:41:35,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:35,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:41:35,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:41:35,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:35,666 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:41:35,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:35,789 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:41:35,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35 WrapperNode [2020-09-25 06:41:35,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:35,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:41:35,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:41:35,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:41:35,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:35,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:35,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:35,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:35,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:35,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:35,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (1/1) ... [2020-09-25 06:41:35,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:41:35,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:41:35,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:41:35,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:41:35,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (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 06:41:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:41:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:41:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 06:41:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 06:41:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 06:41:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 06:41:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-25 06:41:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 06:41:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-09-25 06:41:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-09-25 06:41:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:41:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:41:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:41:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 06:41:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 06:41:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 06:41:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 06:41:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 06:41:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 06:41:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 06:41:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 06:41:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 06:41:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 06:41:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 06:41:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 06:41:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 06:41:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 06:41:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 06:41:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 06:41:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 06:41:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 06:41:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 06:41:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 06:41:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 06:41:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 06:41:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 06:41:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 06:41:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 06:41:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 06:41:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 06:41:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 06:41:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 06:41:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 06:41:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 06:41:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 06:41:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 06:41:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 06:41:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 06:41:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 06:41:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 06:41:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 06:41:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 06:41:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 06:41:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 06:41:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 06:41:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 06:41:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 06:41:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 06:41:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 06:41:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 06:41:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 06:41:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 06:41:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 06:41:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 06:41:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 06:41:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 06:41:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 06:41:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 06:41:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 06:41:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 06:41:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 06:41:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 06:41:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 06:41:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 06:41:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 06:41:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 06:41:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 06:41:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 06:41:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:41:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 06:41:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 06:41:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 06:41:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 06:41:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 06:41:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 06:41:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 06:41:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 06:41:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 06:41:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 06:41:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 06:41:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 06:41:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 06:41:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 06:41:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 06:41:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 06:41:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 06:41:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 06:41:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 06:41:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 06:41:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 06:41:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 06:41:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 06:41:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 06:41:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 06:41:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 06:41:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 06:41:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 06:41:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 06:41:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 06:41:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 06:41:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 06:41:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 06:41:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 06:41:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 06:41:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 06:41:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 06:41:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 06:41:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 06:41:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 06:41:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 06:41:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 06:41:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 06:41:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-25 06:41:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 06:41:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 06:41:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:41:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-09-25 06:41:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-09-25 06:41:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:41:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 06:41:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 06:41:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:41:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:41:36,386 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 06:41:36,707 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:41:36,708 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 06:41:36,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:36 BoogieIcfgContainer [2020-09-25 06:41:36,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:41:36,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:41:36,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:41:36,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:41:36,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:41:35" (1/3) ... [2020-09-25 06:41:36,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272dceeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:36, skipping insertion in model container [2020-09-25 06:41:36,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:35" (2/3) ... [2020-09-25 06:41:36,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272dceeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:36, skipping insertion in model container [2020-09-25 06:41:36,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:36" (3/3) ... [2020-09-25 06:41:36,725 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-09-25 06:41:36,737 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:41:36,750 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:41:36,774 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:41:36,811 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:41:36,811 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:41:36,811 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:41:36,812 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:41:36,812 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:41:36,812 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:41:36,812 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:41:36,812 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:41:36,840 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-09-25 06:41:36,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 06:41:36,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:36,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:36,853 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:36,861 INFO L82 PathProgramCache]: Analyzing trace with hash 422432984, now seen corresponding path program 1 times [2020-09-25 06:41:36,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:36,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629736403] [2020-09-25 06:41:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:37,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:37,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 06:41:37,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:41:37,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-09-25 06:41:37,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:37,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:41:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:37,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:41:37,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:37,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:37,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:37,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:41:37,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:37,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:37,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:41:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:37,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:37,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:41:37,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:37,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:41:37,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:37,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:37,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:37,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 06:41:37,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:37,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:37,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 06:41:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:37,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:37,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:37,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:37,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:41:37,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:37,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:37,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:37,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 06:41:37,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:37,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:37,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:41:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:37,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:37,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:41:37,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:37,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:41:37,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:37,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 06:41:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:37,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:37,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 06:41:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:37,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:37,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:37,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:37,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:41:37,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:37,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:37,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:37,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:41:37,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:37,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:41:37,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 06:41:37,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629736403] [2020-09-25 06:41:37,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:37,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 06:41:37,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778332201] [2020-09-25 06:41:37,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:41:37,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:37,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:41:37,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:41:37,835 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 4 states. [2020-09-25 06:41:38,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:38,199 INFO L93 Difference]: Finished difference Result 289 states and 337 transitions. [2020-09-25 06:41:38,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 06:41:38,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 06:41:38,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:38,214 INFO L225 Difference]: With dead ends: 289 [2020-09-25 06:41:38,215 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 06:41:38,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 06:41:38,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 06:41:38,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2020-09-25 06:41:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 06:41:38,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-09-25 06:41:38,284 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 54 [2020-09-25 06:41:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:38,285 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-09-25 06:41:38,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:41:38,285 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-09-25 06:41:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 06:41:38,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:38,290 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:38,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:41:38,290 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:38,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:38,291 INFO L82 PathProgramCache]: Analyzing trace with hash 333013349, now seen corresponding path program 1 times [2020-09-25 06:41:38,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:38,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667569064] [2020-09-25 06:41:38,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:38,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:39,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:39,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:43,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:43,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 06:41:43,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:41:43,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:41:43,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:43,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:43,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:43,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 06:41:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:41:43,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:43,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:43,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:43,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:43,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:43,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:43,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:43,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:43,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:43,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:41:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:43,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:43,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:43,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:43,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:41:43,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:43,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 06:41:43,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:43,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:43,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:43,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:41:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:41:43,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:43,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:41:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:43,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:43,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:43,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:41:43,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:43,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:41:43,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:43,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:43,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:43,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:41:43,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:43,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:43,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 06:41:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:43,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:43,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:43,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:41:43,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:43,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:41:43,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:43,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:41:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:43,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:43,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 06:41:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:43,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:43,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:43,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:43,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:43,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:43,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:43,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:43,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:43,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:41:43,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:43,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:43,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667569064] [2020-09-25 06:41:43,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:43,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:41:43,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199423483] [2020-09-25 06:41:43,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:41:43,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:43,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:41:43,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:41:43,637 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 9 states. [2020-09-25 06:41:44,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:44,433 INFO L93 Difference]: Finished difference Result 275 states and 301 transitions. [2020-09-25 06:41:44,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:41:44,433 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 06:41:44,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:44,437 INFO L225 Difference]: With dead ends: 275 [2020-09-25 06:41:44,438 INFO L226 Difference]: Without dead ends: 169 [2020-09-25 06:41:44,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:41:44,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-25 06:41:44,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 134. [2020-09-25 06:41:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-25 06:41:44,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 145 transitions. [2020-09-25 06:41:44,459 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 145 transitions. Word has length 69 [2020-09-25 06:41:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:44,460 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 145 transitions. [2020-09-25 06:41:44,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:41:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 145 transitions. [2020-09-25 06:41:44,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 06:41:44,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:44,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:44,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:41:44,464 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:44,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:44,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1735568478, now seen corresponding path program 1 times [2020-09-25 06:41:44,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:44,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554153709] [2020-09-25 06:41:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:44,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:44,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:44,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:44,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:45,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:45,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:45,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:49,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 06:41:49,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:41:49,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:41:49,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:49,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 06:41:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 06:41:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 06:41:49,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:49,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:49,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:49,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:49,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:49,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:41:49,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:49,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:49,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:49,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:49,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:41:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:49,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:49,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:41:49,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:49,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 06:41:49,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:49,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:49,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:49,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:49,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:41:49,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:49,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:41:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:49,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:49,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:41:49,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:49,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 06:41:49,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:49,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:49,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:41:49,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:41:49,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:49,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 06:41:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:49,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:49,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:41:49,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:41:49,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 06:41:49,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:49,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:41:49,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:49,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:41:49,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:50,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 06:41:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:50,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:50,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:50,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:50,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:50,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:50,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:41:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:50,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:50,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554153709] [2020-09-25 06:41:50,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:50,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 06:41:50,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412288437] [2020-09-25 06:41:50,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 06:41:50,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:50,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 06:41:50,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:41:50,059 INFO L87 Difference]: Start difference. First operand 134 states and 145 transitions. Second operand 17 states. [2020-09-25 06:41:51,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:51,562 INFO L93 Difference]: Finished difference Result 372 states and 426 transitions. [2020-09-25 06:41:51,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 06:41:51,563 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 71 [2020-09-25 06:41:51,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:51,568 INFO L225 Difference]: With dead ends: 372 [2020-09-25 06:41:51,568 INFO L226 Difference]: Without dead ends: 289 [2020-09-25 06:41:51,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=221, Invalid=1185, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 06:41:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-09-25 06:41:51,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 170. [2020-09-25 06:41:51,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-25 06:41:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 190 transitions. [2020-09-25 06:41:51,614 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 190 transitions. Word has length 71 [2020-09-25 06:41:51,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:51,616 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 190 transitions. [2020-09-25 06:41:51,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 06:41:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 190 transitions. [2020-09-25 06:41:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 06:41:51,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:51,622 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:51,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:41:51,622 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:51,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:51,622 INFO L82 PathProgramCache]: Analyzing trace with hash 454377439, now seen corresponding path program 1 times [2020-09-25 06:41:51,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:51,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460172142] [2020-09-25 06:41:51,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:51,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:51,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:53,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:53,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 06:41:53,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:53,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2110 [2020-09-25 06:41:53,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:53,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:41:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 06:41:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:41:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:53,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:53,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:53,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:53,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:53,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:53,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:53,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:53,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:53,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:53,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:41:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:53,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:53,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:41:53,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:53,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 06:41:53,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:53,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:53,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:53,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:41:53,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:53,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:41:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:53,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:53,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:41:53,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:53,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:41:53,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:53,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:41:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:41:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:41:53,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:54,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 06:41:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:54,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:54,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:41:54,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:54,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:41:54,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:54,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:54,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:54,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:41:54,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:54,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:54,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 06:41:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:54,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:54,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:54,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:54,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:54,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:54,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:54,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:54,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:41:54,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:54,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:54,056 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:54,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460172142] [2020-09-25 06:41:54,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:54,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:41:54,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045139606] [2020-09-25 06:41:54,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:41:54,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:54,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:41:54,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:41:54,060 INFO L87 Difference]: Start difference. First operand 170 states and 190 transitions. Second operand 12 states. [2020-09-25 06:41:54,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:54,948 INFO L93 Difference]: Finished difference Result 350 states and 399 transitions. [2020-09-25 06:41:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 06:41:54,949 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-09-25 06:41:54,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:54,952 INFO L225 Difference]: With dead ends: 350 [2020-09-25 06:41:54,952 INFO L226 Difference]: Without dead ends: 244 [2020-09-25 06:41:54,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-09-25 06:41:54,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-09-25 06:41:54,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 188. [2020-09-25 06:41:54,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-25 06:41:54,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 212 transitions. [2020-09-25 06:41:54,974 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 212 transitions. Word has length 73 [2020-09-25 06:41:54,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:54,975 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 212 transitions. [2020-09-25 06:41:54,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:41:54,975 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 212 transitions. [2020-09-25 06:41:54,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 06:41:54,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:54,977 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:54,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:41:54,978 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:54,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:54,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1660389815, now seen corresponding path program 1 times [2020-09-25 06:41:54,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:54,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401847891] [2020-09-25 06:41:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:55,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:55,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:55,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:57,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:58,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:58,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:00,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 06:42:00,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:00,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 06:42:00,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:00,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:00,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:42:00,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 06:42:00,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:42:00,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:00,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:00,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:00,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:42:00,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:00,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:42:00,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:00,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:00,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:00,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:42:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:00,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:00,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:00,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:42:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-09-25 06:42:00,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:00,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:42:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:42:00,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:00,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 06:42:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:00,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:00,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:42:00,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:00,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 06:42:00,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:00,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:42:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:42:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:42:00,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:42:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:00,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:00,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:42:00,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:00,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:42:00,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:00,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:00,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:00,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:42:00,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:00,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:00,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 06:42:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:00,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:00,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:42:00,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:00,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:42:00,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:00,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:42:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:00,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 06:42:00,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401847891] [2020-09-25 06:42:00,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:00,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 06:42:00,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234175203] [2020-09-25 06:42:00,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 06:42:00,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:00,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 06:42:00,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:42:00,827 INFO L87 Difference]: Start difference. First operand 188 states and 212 transitions. Second operand 13 states. [2020-09-25 06:42:01,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:01,909 INFO L93 Difference]: Finished difference Result 342 states and 385 transitions. [2020-09-25 06:42:01,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 06:42:01,909 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-09-25 06:42:01,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:01,913 INFO L225 Difference]: With dead ends: 342 [2020-09-25 06:42:01,913 INFO L226 Difference]: Without dead ends: 236 [2020-09-25 06:42:01,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2020-09-25 06:42:01,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-09-25 06:42:01,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 177. [2020-09-25 06:42:01,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-25 06:42:01,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2020-09-25 06:42:01,939 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 81 [2020-09-25 06:42:01,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:01,940 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2020-09-25 06:42:01,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 06:42:01,940 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2020-09-25 06:42:01,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 06:42:01,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:01,942 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:01,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:42:01,942 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:01,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:01,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1107353865, now seen corresponding path program 2 times [2020-09-25 06:42:01,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:01,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983194011] [2020-09-25 06:42:01,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:01,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:03,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:06,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:06,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 06:42:06,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:06,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:42:06,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:06,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 06:42:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 06:42:06,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:42:06,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:07,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:07,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:07,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:42:07,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:07,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:42:07,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:07,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:07,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:42:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:07,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:07,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 06:42:07,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:07,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 06:42:07,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:07,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:07,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:42:07,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:07,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:42:07,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:07,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 06:42:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:07,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:07,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:42:07,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:42:07,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 06:42:07,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:07,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:07,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:07,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:07,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:42:07,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:07,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 06:42:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:07,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:07,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:07,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:42:07,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 06:42:07,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:07,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:42:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:07,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:42:07,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:07,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 06:42:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:07,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:07,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:42:07,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:07,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:42:07,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:07,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:42:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:07,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:07,618 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:42:07,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983194011] [2020-09-25 06:42:07,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:07,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 06:42:07,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116193717] [2020-09-25 06:42:07,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 06:42:07,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:07,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 06:42:07,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:42:07,621 INFO L87 Difference]: Start difference. First operand 177 states and 198 transitions. Second operand 19 states. [2020-09-25 06:42:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:09,771 INFO L93 Difference]: Finished difference Result 402 states and 461 transitions. [2020-09-25 06:42:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 06:42:09,772 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 81 [2020-09-25 06:42:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:09,776 INFO L225 Difference]: With dead ends: 402 [2020-09-25 06:42:09,777 INFO L226 Difference]: Without dead ends: 309 [2020-09-25 06:42:09,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=319, Invalid=1661, Unknown=0, NotChecked=0, Total=1980 [2020-09-25 06:42:09,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-09-25 06:42:09,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 177. [2020-09-25 06:42:09,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-25 06:42:09,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2020-09-25 06:42:09,795 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 81 [2020-09-25 06:42:09,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:09,796 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2020-09-25 06:42:09,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 06:42:09,796 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2020-09-25 06:42:09,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 06:42:09,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:09,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:09,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:42:09,798 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:09,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:09,799 INFO L82 PathProgramCache]: Analyzing trace with hash 27846035, now seen corresponding path program 1 times [2020-09-25 06:42:09,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:09,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227588273] [2020-09-25 06:42:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:09,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:09,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:11,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:11,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:14,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:14,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 06:42:14,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:42:14,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:42:14,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:14,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:14,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:42:14,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 06:42:14,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:42:14,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:14,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:14,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:14,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:14,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:42:14,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:14,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:42:14,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:14,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:14,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:14,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:14,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:14,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:14,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:42:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:14,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:14,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:14,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:42:14,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:42:14,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:14,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:14,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:14,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:42:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:14,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:14,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:14,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:42:14,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:14,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 06:42:14,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:14,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:42:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:15,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:42:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:15,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:15,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:15,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:42:15,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:15,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:42:15,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:15,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:15,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:15,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:15,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:42:15,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:15,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 06:42:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:15,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:15,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:15,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:42:15,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:15,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:42:15,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:15,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:42:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:42:15,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 06:42:15,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227588273] [2020-09-25 06:42:15,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:15,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 06:42:15,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523104992] [2020-09-25 06:42:15,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 06:42:15,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:15,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 06:42:15,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:42:15,176 INFO L87 Difference]: Start difference. First operand 177 states and 198 transitions. Second operand 13 states. [2020-09-25 06:42:16,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:16,148 INFO L93 Difference]: Finished difference Result 233 states and 264 transitions. [2020-09-25 06:42:16,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:42:16,149 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 82 [2020-09-25 06:42:16,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:16,151 INFO L225 Difference]: With dead ends: 233 [2020-09-25 06:42:16,151 INFO L226 Difference]: Without dead ends: 227 [2020-09-25 06:42:16,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-09-25 06:42:16,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-09-25 06:42:16,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 203. [2020-09-25 06:42:16,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-25 06:42:16,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 231 transitions. [2020-09-25 06:42:16,166 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 231 transitions. Word has length 82 [2020-09-25 06:42:16,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:16,166 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 231 transitions. [2020-09-25 06:42:16,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 06:42:16,166 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 231 transitions. [2020-09-25 06:42:16,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 06:42:16,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:16,168 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:16,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:42:16,169 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:16,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:16,169 INFO L82 PathProgramCache]: Analyzing trace with hash -921903450, now seen corresponding path program 1 times [2020-09-25 06:42:16,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:16,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589255063] [2020-09-25 06:42:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:16,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:16,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:16,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:21,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:21,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 06:42:21,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:42:21,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:42:21,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:21,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:42:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 06:42:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 06:42:21,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:21,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:21,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:21,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:21,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:42:21,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:21,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:42:21,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:21,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:21,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:21,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:21,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:42:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:21,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:21,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:21,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 06:42:21,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:21,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 06:42:21,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:21,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:42:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:42:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:21,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 06:42:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:21,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:21,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:21,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:21,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:42:21,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:42:21,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 06:42:21,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:21,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:42:21,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:21,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 06:42:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:21,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:21,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:21,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:21,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:21,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:42:21,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 06:42:21,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:21,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:42:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:42:21,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:42:21,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:21,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 06:42:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:21,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:21,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:21,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:42:21,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:21,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:42:21,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:21,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:21,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:21,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:42:21,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:21,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 06:42:21,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589255063] [2020-09-25 06:42:21,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:21,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 06:42:21,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39424271] [2020-09-25 06:42:21,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 06:42:21,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:21,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 06:42:21,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:42:21,721 INFO L87 Difference]: Start difference. First operand 203 states and 231 transitions. Second operand 15 states.