/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-simple/sll2n_insert_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:26:48,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:26:48,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:26:48,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:26:48,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:26:48,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:26:48,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:26:48,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:26:48,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:26:48,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:26:48,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:26:48,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:26:48,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:26:48,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:26:48,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:26:48,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:26:48,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:26:48,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:26:48,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:26:48,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:26:48,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:26:48,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:26:48,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:26:48,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:26:48,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:26:48,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:26:48,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:26:48,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:26:48,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:26:48,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:26:48,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:26:48,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:26:48,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:26:48,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:26:48,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:26:48,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:26:48,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:26:48,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:26:48,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:26:48,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:26:48,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:26:48,202 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 [2020-10-27 01:26:48,258 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:26:48,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:26:48,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:26:48,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:26:48,260 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:26:48,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:26:48,260 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:26:48,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:26:48,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:26:48,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:26:48,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:26:48,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:26:48,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:26:48,264 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:26:48,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:26:48,264 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:26:48,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:26:48,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:26:48,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:26:48,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:26:48,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:26:48,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:26:48,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:26:48,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:26:48,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:26:48,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:26:48,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:26:48,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:26:48,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:26:48,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:26:48,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:26:48,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:26:48,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:26:48,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:26:48,733 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:26:48,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_insert_unequal.i [2020-10-27 01:26:48,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb00b99cb/9c47ffa94b4b48119e0181d2bd0251c6/FLAG063cb24d2 [2020-10-27 01:26:49,434 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:26:49,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_insert_unequal.i [2020-10-27 01:26:49,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb00b99cb/9c47ffa94b4b48119e0181d2bd0251c6/FLAG063cb24d2 [2020-10-27 01:26:49,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb00b99cb/9c47ffa94b4b48119e0181d2bd0251c6 [2020-10-27 01:26:49,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:26:49,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:26:49,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:26:49,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:26:49,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:26:49,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:26:49" (1/1) ... [2020-10-27 01:26:49,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a93cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:26:49, skipping insertion in model container [2020-10-27 01:26:49,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:26:49" (1/1) ... [2020-10-27 01:26:49,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:26:49,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:26:50,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:26:50,197 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:26:50,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:26:50,368 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:26:50,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:26:50 WrapperNode [2020-10-27 01:26:50,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:26:50,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:26:50,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:26:50,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:26:50,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:26:50" (1/1) ... [2020-10-27 01:26:50,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:26:50" (1/1) ... [2020-10-27 01:26:50,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:26:50" (1/1) ... [2020-10-27 01:26:50,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:26:50" (1/1) ... [2020-10-27 01:26:50,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:26:50" (1/1) ... [2020-10-27 01:26:50,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:26:50" (1/1) ... [2020-10-27 01:26:50,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:26:50" (1/1) ... [2020-10-27 01:26:50,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:26:50,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:26:50,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:26:50,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:26:50,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:26:50" (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 [2020-10-27 01:26:50,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 01:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 01:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 01:26:50,520 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-27 01:26:50,520 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-27 01:26:50,520 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-27 01:26:50,520 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-27 01:26:50,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:26:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:26:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:26:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 01:26:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 01:26:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 01:26:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 01:26:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 01:26:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 01:26:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 01:26:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 01:26:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 01:26:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 01:26:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 01:26:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 01:26:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 01:26:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 01:26:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 01:26:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 01:26:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 01:26:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 01:26:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 01:26:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 01:26:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 01:26:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 01:26:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 01:26:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 01:26:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 01:26:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 01:26:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 01:26:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 01:26:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 01:26:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 01:26:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 01:26:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 01:26:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 01:26:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 01:26:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 01:26:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 01:26:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 01:26:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 01:26:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 01:26:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 01:26:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 01:26:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 01:26:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 01:26:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 01:26:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 01:26:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 01:26:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 01:26:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 01:26:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 01:26:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 01:26:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 01:26:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 01:26:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:26:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:26:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:26:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:26:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 01:26:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 01:26:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:26:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 01:26:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 01:26:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 01:26:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 01:26:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 01:26:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 01:26:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 01:26:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 01:26:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 01:26:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 01:26:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 01:26:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 01:26:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 01:26:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 01:26:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 01:26:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 01:26:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 01:26:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 01:26:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 01:26:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 01:26:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 01:26:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 01:26:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 01:26:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 01:26:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 01:26:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 01:26:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 01:26:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 01:26:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 01:26:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 01:26:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 01:26:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 01:26:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 01:26:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 01:26:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 01:26:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 01:26:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 01:26:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 01:26:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 01:26:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 01:26:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 01:26:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 01:26:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 01:26:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 01:26:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 01:26:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 01:26:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-27 01:26:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:26:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:26:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:26:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-27 01:26:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-27 01:26:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:26:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:26:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-27 01:26:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:26:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 01:26:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:26:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:26:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:26:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:26:51,017 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 01:26:51,235 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:26:51,235 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-27 01:26:51,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:26:51 BoogieIcfgContainer [2020-10-27 01:26:51,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:26:51,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:26:51,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:26:51,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:26:51,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:26:49" (1/3) ... [2020-10-27 01:26:51,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39099da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:26:51, skipping insertion in model container [2020-10-27 01:26:51,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:26:50" (2/3) ... [2020-10-27 01:26:51,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39099da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:26:51, skipping insertion in model container [2020-10-27 01:26:51,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:26:51" (3/3) ... [2020-10-27 01:26:51,246 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_insert_unequal.i [2020-10-27 01:26:51,258 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:26:51,264 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:26:51,277 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:26:51,310 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:26:51,311 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:26:51,311 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:26:51,311 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:26:51,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:26:51,311 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:26:51,311 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:26:51,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:26:51,336 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-10-27 01:26:51,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 01:26:51,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:26:51,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:26:51,347 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:26:51,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:26:51,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1299191055, now seen corresponding path program 1 times [2020-10-27 01:26:51,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:26:51,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844479476] [2020-10-27 01:26:51,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:26:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:51,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:51,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:51,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:52,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:52,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 01:26:52,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:26:52,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 870 [2020-10-27 01:26:52,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:52,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:26:52,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:26:52,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:26:52,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:26:52,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:26:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:52,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:52,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:52,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:26:52,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:52,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:26:52,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:52,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:26:52,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:26:52,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:26:52,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:52,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:26:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:52,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:52,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:52,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:52,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:52,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 01:26:52,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:26:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:26:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:26:52,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:52,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 01:26:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:52,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:52,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:52,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:52,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:52,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:26:52,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:26:52,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 01:26:52,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:52,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:26:52,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:26:52,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 01:26:52,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:52,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:26:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:52,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:52,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:52,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:52,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:52,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:26:52,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:26:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:26:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:26:52,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:26:52,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844479476] [2020-10-27 01:26:52,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:26:52,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 01:26:52,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196708254] [2020-10-27 01:26:52,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:26:52,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:26:52,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:26:52,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:26:52,811 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 8 states. [2020-10-27 01:26:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:26:53,202 INFO L93 Difference]: Finished difference Result 116 states and 158 transitions. [2020-10-27 01:26:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:26:53,204 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-27 01:26:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:26:53,214 INFO L225 Difference]: With dead ends: 116 [2020-10-27 01:26:53,214 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 01:26:53,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:26:53,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 01:26:53,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-10-27 01:26:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 01:26:53,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 01:26:53,263 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 33 [2020-10-27 01:26:53,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:26:53,263 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 01:26:53,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:26:53,264 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 01:26:53,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 01:26:53,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:26:53,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:26:53,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:26:53,267 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:26:53,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:26:53,268 INFO L82 PathProgramCache]: Analyzing trace with hash 883170427, now seen corresponding path program 1 times [2020-10-27 01:26:53,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:26:53,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765418960] [2020-10-27 01:26:53,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:26:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:53,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:53,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:54,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:56,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:56,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 01:26:56,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:26:56,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2703 [2020-10-27 01:26:56,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:26:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:26:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 01:26:56,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:56,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:26:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:56,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:56,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:56,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:26:56,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:56,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:26:56,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:56,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:26:56,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:26:56,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:26:56,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:56,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:26:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:56,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:56,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:56,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:56,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:26:56,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:26:56,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 01:26:56,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:56,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:26:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:26:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:26:56,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:56,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:26:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:56,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:56,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:56,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:56,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:56,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:26:56,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:26:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:26:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:26:56,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:56,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:26:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:56,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:56,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:56,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:26:56,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:56,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 01:26:56,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:26:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:26:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:26:56,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:56,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:26:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:56,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:26:56,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:26:56,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:26:56,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:26:56,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:26:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:26:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:26:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:26:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:26:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:26:56,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765418960] [2020-10-27 01:26:56,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:26:56,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 01:26:56,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906244093] [2020-10-27 01:26:56,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:26:56,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:26:56,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:26:56,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:26:56,358 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 8 states. [2020-10-27 01:26:56,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:26:56,585 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2020-10-27 01:26:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:26:56,586 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-27 01:26:56,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:26:56,588 INFO L225 Difference]: With dead ends: 61 [2020-10-27 01:26:56,588 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 01:26:56,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:26:56,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 01:26:56,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-27 01:26:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 01:26:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-10-27 01:26:56,599 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 42 [2020-10-27 01:26:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:26:56,600 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-10-27 01:26:56,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:26:56,600 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-10-27 01:26:56,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 01:26:56,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:26:56,603 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:26:56,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:26:56,604 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:26:56,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:26:56,605 INFO L82 PathProgramCache]: Analyzing trace with hash 2012074859, now seen corresponding path program 1 times [2020-10-27 01:26:56,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:26:56,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79462206] [2020-10-27 01:26:56,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:26:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:26:56,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:57,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:26:58,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:00,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:00,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 01:27:00,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:27:00,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4157 [2020-10-27 01:27:00,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:27:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:27:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:27:00,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:00,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:27:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:00,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:00,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:00,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:27:00,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:00,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:27:00,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:00,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:00,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:27:00,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:27:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:00,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:00,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:00,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:27:00,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:00,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 01:27:00,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:27:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:27:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:27:00,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:00,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:27:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:00,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:01,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:01,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:01,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:01,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:27:01,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:27:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:27:01,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:01,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:27:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:01,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:01,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:01,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:27:01,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:01,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 01:27:01,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 01:27:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:01,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:27:01,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:27:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:01,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:01,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:01,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:01,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:01,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:27:01,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:01,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:27:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:27:01,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79462206] [2020-10-27 01:27:01,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:27:01,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 01:27:01,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635139849] [2020-10-27 01:27:01,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:27:01,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:27:01,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:27:01,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:27:01,088 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 8 states. [2020-10-27 01:27:01,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:27:01,393 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2020-10-27 01:27:01,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:27:01,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-27 01:27:01,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:27:01,395 INFO L225 Difference]: With dead ends: 82 [2020-10-27 01:27:01,395 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 01:27:01,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:27:01,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 01:27:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2020-10-27 01:27:01,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 01:27:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2020-10-27 01:27:01,407 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 43 [2020-10-27 01:27:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:27:01,408 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2020-10-27 01:27:01,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:27:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-10-27 01:27:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 01:27:01,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:27:01,410 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-27 01:27:01,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:27:01,410 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:27:01,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:27:01,411 INFO L82 PathProgramCache]: Analyzing trace with hash -576632389, now seen corresponding path program 2 times [2020-10-27 01:27:01,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:27:01,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961256710] [2020-10-27 01:27:01,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:27:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:01,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:02,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:02,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 01:27:02,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1499 [2020-10-27 01:27:02,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 01:27:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:27:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 01:27:02,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:03,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:27:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:03,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:03,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:03,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:27:03,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:03,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:27:03,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:03,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:03,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:03,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:03,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:27:03,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:27:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:03,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:03,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:03,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 01:27:03,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:03,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-27 01:27:03,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:03,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:27:03,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:03,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 01:27:03,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:27:03,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:27:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:03,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:03,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:03,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:03,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:03,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:27:03,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:27:03,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:03,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:27:03,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:03,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:27:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:03,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:03,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:03,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:03,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:03,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 01:27:03,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:27:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:27:03,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:03,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 01:27:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:03,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:03,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:03,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:27:03,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:03,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-27 01:27:03,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:27:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 01:27:03,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:04,194 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-27 01:27:04,391 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-27 01:27:04,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:27:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:04,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:04,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:04,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:04,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:04,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 01:27:04,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:27:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:27:04,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:27:05,229 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2020-10-27 01:27:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 01:27:05,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961256710] [2020-10-27 01:27:05,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:27:05,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 01:27:05,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450101253] [2020-10-27 01:27:05,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 01:27:05,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:27:05,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 01:27:05,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:27:05,262 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 24 states. [2020-10-27 01:27:07,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:27:07,254 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2020-10-27 01:27:07,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 01:27:07,255 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 52 [2020-10-27 01:27:07,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:27:07,256 INFO L225 Difference]: With dead ends: 71 [2020-10-27 01:27:07,257 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 01:27:07,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=131, Invalid=1201, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 01:27:07,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 01:27:07,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 56. [2020-10-27 01:27:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 01:27:07,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2020-10-27 01:27:07,276 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 52 [2020-10-27 01:27:07,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:27:07,277 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2020-10-27 01:27:07,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 01:27:07,277 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2020-10-27 01:27:07,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 01:27:07,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:27:07,278 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-27 01:27:07,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:27:07,279 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:27:07,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:27:07,279 INFO L82 PathProgramCache]: Analyzing trace with hash -969659399, now seen corresponding path program 1 times [2020-10-27 01:27:07,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:27:07,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330257445] [2020-10-27 01:27:07,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:27:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:07,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:07,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:08,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:08,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 01:27:08,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:27:08,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 871 [2020-10-27 01:27:08,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:08,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 01:27:08,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:27:08,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 01:27:08,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:08,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:27:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:08,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:08,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:08,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:27:08,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:08,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:27:08,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:08,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:08,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:27:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:08,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:08,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:08,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 01:27:08,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:08,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 01:27:08,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:08,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:27:08,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:08,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:27:08,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:08,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:27:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:08,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:08,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:08,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:08,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:08,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:27:08,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:08,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:08,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:08,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:08,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:27:08,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:27:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:08,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:08,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:08,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:08,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:08,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 01:27:08,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:08,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:27:08,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:08,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:27:08,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:27:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 01:27:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:08,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:08,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:08,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:27:08,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:08,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 01:27:08,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:08,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:27:08,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:08,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 01:27:08,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:08,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:27:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:08,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:08,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:08,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:08,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:08,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 01:27:08,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:08,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:27:08,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:08,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:27:08,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 01:27:08,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330257445] [2020-10-27 01:27:08,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:27:08,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 01:27:08,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068644478] [2020-10-27 01:27:08,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 01:27:08,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:27:08,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 01:27:08,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:27:08,937 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand 19 states. [2020-10-27 01:27:09,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:27:09,890 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2020-10-27 01:27:09,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 01:27:09,891 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-27 01:27:09,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:27:09,892 INFO L225 Difference]: With dead ends: 71 [2020-10-27 01:27:09,893 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 01:27:09,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2020-10-27 01:27:09,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 01:27:09,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-27 01:27:09,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 01:27:09,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-10-27 01:27:09,906 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 52 [2020-10-27 01:27:09,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:27:09,907 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-10-27 01:27:09,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 01:27:09,907 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-10-27 01:27:09,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 01:27:09,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:27:09,908 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:27:09,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:27:09,908 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:27:09,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:27:09,909 INFO L82 PathProgramCache]: Analyzing trace with hash 408925101, now seen corresponding path program 3 times [2020-10-27 01:27:09,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:27:09,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573185353] [2020-10-27 01:27:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:27:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:09,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:10,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:10,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:10,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 01:27:10,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:27:10,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 743 [2020-10-27 01:27:10,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:10,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:27:10,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:27:10,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 01:27:10,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:10,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:27:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:10,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:10,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:10,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:27:10,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:10,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:27:10,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:10,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:10,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:27:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:10,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:10,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:10,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:10,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 01:27:10,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:27:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 01:27:10,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:27:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 01:27:10,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:10,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:27:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:10,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:10,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:10,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:10,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:10,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:27:10,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:27:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:27:10,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:10,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:27:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:10,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:10,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:10,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:10,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:10,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:27:10,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:10,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:27:10,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:10,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:27:10,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:11,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 01:27:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:11,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:11,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:11,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:27:11,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:11,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 01:27:11,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:27:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:27:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 01:27:11,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:11,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:27:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:11,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:11,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:11,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:11,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:11,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 01:27:11,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:27:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:27:11,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 01:27:11,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573185353] [2020-10-27 01:27:11,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:27:11,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 01:27:11,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276390290] [2020-10-27 01:27:11,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 01:27:11,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:27:11,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 01:27:11,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:27:11,183 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 14 states. [2020-10-27 01:27:11,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:27:11,914 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2020-10-27 01:27:11,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 01:27:11,915 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-27 01:27:11,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:27:11,917 INFO L225 Difference]: With dead ends: 70 [2020-10-27 01:27:11,917 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 01:27:11,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:27:11,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 01:27:11,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-10-27 01:27:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 01:27:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-27 01:27:11,935 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 53 [2020-10-27 01:27:11,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:27:11,935 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-27 01:27:11,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 01:27:11,935 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-27 01:27:11,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 01:27:11,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:27:11,938 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-27 01:27:11,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:27:11,939 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:27:11,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:27:11,939 INFO L82 PathProgramCache]: Analyzing trace with hash -749334676, now seen corresponding path program 1 times [2020-10-27 01:27:11,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:27:11,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119912680] [2020-10-27 01:27:11,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:27:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:11,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:12,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:12,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:13,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:15,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:16,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:16,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 01:27:16,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:27:16,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 01:27:16,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:16,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 01:27:16,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:27:16,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 01:27:16,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:17,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:27:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:17,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:17,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:17,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:27:17,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:17,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:27:17,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:17,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:17,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:17,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:17,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:17,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:27:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:17,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:17,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 01:27:17,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:17,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 01:27:17,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:17,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:27:17,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:17,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:27:17,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:17,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:27:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:17,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:17,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:17,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:17,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:17,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:27:17,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:17,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:17,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:27:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:17,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:17,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:17,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:17,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:17,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 01:27:17,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:27:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:27:17,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:17,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 01:27:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:17,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:17,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:17,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:27:17,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:17,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 01:27:17,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:27:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 01:27:17,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:18,176 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-10-27 01:27:18,484 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-27 01:27:18,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:27:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:18,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:18,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:18,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:18,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:18,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 01:27:18,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:27:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:27:18,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:27:18,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119912680] [2020-10-27 01:27:18,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:27:18,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 01:27:18,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764715581] [2020-10-27 01:27:18,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 01:27:18,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:27:18,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 01:27:18,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:27:18,693 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 21 states. [2020-10-27 01:27:20,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:27:20,111 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-27 01:27:20,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 01:27:20,112 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 53 [2020-10-27 01:27:20,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:27:20,114 INFO L225 Difference]: With dead ends: 59 [2020-10-27 01:27:20,114 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 01:27:20,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2020-10-27 01:27:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 01:27:20,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-27 01:27:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 01:27:20,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-10-27 01:27:20,125 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 53 [2020-10-27 01:27:20,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:27:20,126 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-10-27 01:27:20,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 01:27:20,126 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-10-27 01:27:20,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 01:27:20,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:27:20,127 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:27:20,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:27:20,127 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:27:20,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:27:20,128 INFO L82 PathProgramCache]: Analyzing trace with hash -107280714, now seen corresponding path program 1 times [2020-10-27 01:27:20,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:27:20,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138705018] [2020-10-27 01:27:20,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:27:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:20,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:20,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:20,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:21,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:21,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:22,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:22,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 01:27:22,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:27:22,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2570 [2020-10-27 01:27:22,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:22,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:27:22,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:27:22,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 01:27:22,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:22,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:27:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:22,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:22,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:22,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:27:22,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:22,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:27:22,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:22,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:22,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:22,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:22,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:22,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:27:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:22,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:22,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:22,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:22,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 01:27:22,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:27:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 01:27:22,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:27:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 01:27:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:23,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:27:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:23,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:23,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:23,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:23,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:23,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:27:23,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:27:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:27:23,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:23,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:27:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:23,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:23,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:23,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:23,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:27:23,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:27:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:27:23,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:23,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 01:27:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:23,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:23,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:23,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:23,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:27:23,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:27:23,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 01:27:23,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:23,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:27:23,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:23,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 01:27:23,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:23,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:27:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:23,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:23,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:23,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:23,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:23,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:27:23,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:23,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:27:23,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:23,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:27:23,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 01:27:23,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138705018] [2020-10-27 01:27:23,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:27:23,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 01:27:23,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397020135] [2020-10-27 01:27:23,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 01:27:23,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:27:23,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 01:27:23,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-27 01:27:23,269 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 16 states. [2020-10-27 01:27:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:27:24,035 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2020-10-27 01:27:24,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 01:27:24,038 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-10-27 01:27:24,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:27:24,040 INFO L225 Difference]: With dead ends: 71 [2020-10-27 01:27:24,040 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 01:27:24,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2020-10-27 01:27:24,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 01:27:24,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2020-10-27 01:27:24,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 01:27:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-27 01:27:24,063 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 54 [2020-10-27 01:27:24,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:27:24,063 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-27 01:27:24,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 01:27:24,064 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-27 01:27:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 01:27:24,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:27:24,065 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-27 01:27:24,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:27:24,068 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:27:24,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:27:24,068 INFO L82 PathProgramCache]: Analyzing trace with hash 915665361, now seen corresponding path program 1 times [2020-10-27 01:27:24,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:27:24,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71604436] [2020-10-27 01:27:24,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:27:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:25,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:25,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 01:27:25,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:25,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1464 [2020-10-27 01:27:25,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:25,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 01:27:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:27:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 01:27:25,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:25,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:27:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:25,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:25,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:25,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:27:25,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:25,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:27:25,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:25,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:25,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:27:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:25,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:25,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:25,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 01:27:25,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:25,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 01:27:25,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:27:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:25,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:27:25,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:25,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:27:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:25,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:25,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:25,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:25,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:27:25,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:25,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:25,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:27:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:26,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:26,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:26,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:26,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:26,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:27:26,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:26,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:27:26,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:26,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:27:26,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:26,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 01:27:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:26,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:26,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:26,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:27:26,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:26,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 01:27:26,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 01:27:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 01:27:26,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:26,833 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-10-27 01:27:27,059 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-27 01:27:27,310 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-27 01:27:27,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:27:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:27,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:27,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:27,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:27,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:27,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 01:27:27,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:27:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:27:27,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 01:27:27,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71604436] [2020-10-27 01:27:27,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:27:27,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 01:27:27,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539416456] [2020-10-27 01:27:27,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 01:27:27,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:27:27,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 01:27:27,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2020-10-27 01:27:27,642 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 25 states. [2020-10-27 01:27:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:27:29,283 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-10-27 01:27:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 01:27:29,284 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 55 [2020-10-27 01:27:29,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:27:29,287 INFO L225 Difference]: With dead ends: 53 [2020-10-27 01:27:29,287 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 01:27:29,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=116, Invalid=1144, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 01:27:29,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 01:27:29,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-27 01:27:29,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 01:27:29,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-27 01:27:29,299 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 55 [2020-10-27 01:27:29,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:27:29,299 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-27 01:27:29,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 01:27:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-27 01:27:29,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 01:27:29,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:27:29,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:27:29,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:27:29,301 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:27:29,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:27:29,301 INFO L82 PathProgramCache]: Analyzing trace with hash -506293652, now seen corresponding path program 1 times [2020-10-27 01:27:29,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:27:29,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117112348] [2020-10-27 01:27:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:27:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:29,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:30,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:31,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:34,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:34,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 01:27:34,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:27:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 01:27:34,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 01:27:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:27:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 01:27:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:34,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:27:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:34,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:34,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:34,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:27:34,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:34,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:27:34,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:34,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:34,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:27:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:34,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:34,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:34,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 01:27:34,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:34,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-27 01:27:34,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 01:27:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:27:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:35,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:27:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:35,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:35,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:35,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:35,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:27:35,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:27:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:27:35,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:35,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:27:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:35,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:35,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:35,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:35,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:35,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 01:27:35,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:27:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:27:35,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:35,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 01:27:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:35,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:35,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:35,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:27:35,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 01:27:35,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:27:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 01:27:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:36,253 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 01:27:36,712 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2020-10-27 01:27:37,208 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 86 [2020-10-27 01:27:37,639 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2020-10-27 01:27:38,068 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-10-27 01:27:38,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:27:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:38,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:38,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:38,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:38,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:38,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 01:27:38,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:27:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:27:38,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:38,876 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 43 [2020-10-27 01:27:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:27:38,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117112348] [2020-10-27 01:27:38,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:27:38,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 01:27:38,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494714824] [2020-10-27 01:27:38,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 01:27:38,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:27:38,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 01:27:38,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=809, Unknown=0, NotChecked=0, Total=870 [2020-10-27 01:27:38,936 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 30 states. [2020-10-27 01:27:39,676 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-27 01:27:41,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:27:41,932 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-10-27 01:27:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 01:27:41,932 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 57 [2020-10-27 01:27:41,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:27:41,934 INFO L225 Difference]: With dead ends: 59 [2020-10-27 01:27:41,934 INFO L226 Difference]: Without dead ends: 55 [2020-10-27 01:27:41,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=143, Invalid=1749, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 01:27:41,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-27 01:27:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2020-10-27 01:27:41,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 01:27:41,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-10-27 01:27:41,946 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 57 [2020-10-27 01:27:41,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:27:41,947 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-10-27 01:27:41,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 01:27:41,947 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-10-27 01:27:41,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 01:27:41,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:27:41,948 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:27:41,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:27:41,948 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:27:41,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:27:41,949 INFO L82 PathProgramCache]: Analyzing trace with hash -507902366, now seen corresponding path program 1 times [2020-10-27 01:27:41,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:27:41,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248868437] [2020-10-27 01:27:41,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:27:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:41,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:42,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:45,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:45,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 01:27:45,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:27:45,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3347 [2020-10-27 01:27:45,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 01:27:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:27:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 01:27:45,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:45,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:27:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:45,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:45,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:45,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:27:45,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:45,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:27:45,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:45,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:45,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:27:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:45,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:45,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:45,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 01:27:45,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:45,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 01:27:45,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:27:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:45,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:27:45,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:45,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:27:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:45,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:45,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:45,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:45,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:45,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:27:45,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:45,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:27:45,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:45,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:27:45,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:45,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:27:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:45,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:45,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:45,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:45,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:45,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:27:45,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:45,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:27:45,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:45,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:27:45,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:45,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 01:27:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:45,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:46,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:46,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:27:46,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:46,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 01:27:46,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:46,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:27:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 01:27:46,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:46,810 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-27 01:27:47,202 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2020-10-27 01:27:47,717 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2020-10-27 01:27:48,610 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 98 [2020-10-27 01:27:48,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:27:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:48,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:48,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:48,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:48,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:48,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 01:27:48,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:27:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:27:48,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:49,026 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-10-27 01:27:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:27:49,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248868437] [2020-10-27 01:27:49,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:27:49,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 01:27:49,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986435453] [2020-10-27 01:27:49,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 01:27:49,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:27:49,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 01:27:49,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=754, Unknown=0, NotChecked=0, Total=812 [2020-10-27 01:27:49,060 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 29 states. [2020-10-27 01:27:51,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:27:51,750 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-27 01:27:51,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 01:27:51,750 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 57 [2020-10-27 01:27:51,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:27:51,751 INFO L225 Difference]: With dead ends: 57 [2020-10-27 01:27:51,751 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 01:27:51,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=138, Invalid=1584, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 01:27:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 01:27:51,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-27 01:27:51,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 01:27:51,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-27 01:27:51,773 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 57 [2020-10-27 01:27:51,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:27:51,774 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-27 01:27:51,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 01:27:51,774 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-27 01:27:51,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 01:27:51,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:27:51,776 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:27:51,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 01:27:51,777 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:27:51,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:27:51,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1209305017, now seen corresponding path program 1 times [2020-10-27 01:27:51,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:27:51,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766569633] [2020-10-27 01:27:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:27:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:51,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:53,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:53,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 01:27:53,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:53,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1649 [2020-10-27 01:27:53,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 01:27:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:27:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 01:27:53,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:27:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:54,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:54,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:54,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:27:54,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:27:54,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:27:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:27:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:54,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:27:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:54,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:54,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:54,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 01:27:54,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:54,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 01:27:54,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:54,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:27:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:27:54,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:54,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:27:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:54,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:54,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:54,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:54,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:54,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:27:54,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:27:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:27:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:27:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:54,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:27:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:54,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:54,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:54,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:54,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:54,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 01:27:54,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:27:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:54,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:27:54,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:55,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 01:27:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:55,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:55,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:55,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:27:55,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:55,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 01:27:55,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:55,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:27:55,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:55,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 01:27:55,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:58,135 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 57 [2020-10-27 01:28:05,334 WARN L193 SmtUtils]: Spent 6.70 s on a formula simplification. DAG size of input: 307 DAG size of output: 210 [2020-10-27 01:28:32,743 WARN L193 SmtUtils]: Spent 26.62 s on a formula simplification. DAG size of input: 510 DAG size of output: 358 [2020-10-27 01:28:33,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:28:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:28:33,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:33,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:28:33,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:28:33,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:28:33,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 01:28:33,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:28:33,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:28:33,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:28:33,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:28:33,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:28:34,128 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2020-10-27 01:28:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:28:34,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766569633] [2020-10-27 01:28:34,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:28:34,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 01:28:34,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186829576] [2020-10-27 01:28:34,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 01:28:34,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:28:34,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 01:28:34,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=908, Unknown=0, NotChecked=0, Total=992 [2020-10-27 01:28:34,209 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 32 states. [2020-10-27 01:28:57,258 WARN L193 SmtUtils]: Spent 22.30 s on a formula simplification. DAG size of input: 361 DAG size of output: 353 [2020-10-27 01:29:26,320 WARN L193 SmtUtils]: Spent 27.71 s on a formula simplification. DAG size of input: 368 DAG size of output: 360 [2020-10-27 01:29:27,587 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 01:29:31,992 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-27 01:29:32,257 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-27 01:29:32,676 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-27 01:29:32,971 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 01:29:33,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:29:33,989 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-27 01:29:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 01:29:33,991 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 59 [2020-10-27 01:29:33,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:29:33,992 INFO L225 Difference]: With dead ends: 81 [2020-10-27 01:29:33,992 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 01:29:33,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 91.1s TimeCoverageRelationStatistics Valid=178, Invalid=1892, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 01:29:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 01:29:34,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-10-27 01:29:34,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 01:29:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2020-10-27 01:29:34,009 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 59 [2020-10-27 01:29:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:29:34,009 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2020-10-27 01:29:34,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 01:29:34,009 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2020-10-27 01:29:34,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 01:29:34,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:29:34,011 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:29:34,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 01:29:34,012 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:29:34,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:29:34,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1210913731, now seen corresponding path program 1 times [2020-10-27 01:29:34,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:29:34,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53474251] [2020-10-27 01:29:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:29:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:29:34,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:34,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:34,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:34,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:35,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:29:35,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 01:29:35,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:29:35,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1795 [2020-10-27 01:29:35,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:29:35,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:29:35,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:29:35,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 01:29:35,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:29:36,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:29:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:29:36,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:36,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:29:36,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:29:36,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:29:36,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:29:36,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:29:36,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:29:36,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:29:36,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:29:36,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:29:36,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:29:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:29:36,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:36,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:36,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:29:36,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 01:29:36,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:29:36,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 01:29:36,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:29:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:29:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:29:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 01:29:36,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:29:36,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:29:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:29:36,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:36,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:29:36,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:29:36,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:29:36,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:29:36,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:29:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:29:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:29:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:29:36,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:29:36,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:29:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:29:36,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:36,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:29:36,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:29:36,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:29:36,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:29:36,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:29:36,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:29:36,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:29:36,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:29:36,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:29:36,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 01:29:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:29:36,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:36,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:29:36,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:29:36,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:29:36,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 01:29:36,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:29:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:29:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:29:36,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:29:36,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:29:36,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:29:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:29:36,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:36,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:29:36,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:29:36,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:29:36,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:29:36,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:29:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:29:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:29:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:29:36,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:29:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 01:29:36,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53474251] [2020-10-27 01:29:36,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:29:36,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 01:29:36,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257421118] [2020-10-27 01:29:36,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 01:29:36,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:29:36,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 01:29:36,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:29:36,619 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand 14 states. [2020-10-27 01:29:36,980 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-10-27 01:29:37,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:29:37,843 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2020-10-27 01:29:37,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 01:29:37,845 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-10-27 01:29:37,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:29:37,846 INFO L225 Difference]: With dead ends: 77 [2020-10-27 01:29:37,846 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 01:29:37,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2020-10-27 01:29:37,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 01:29:37,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-27 01:29:37,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 01:29:37,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-10-27 01:29:37,860 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 59 [2020-10-27 01:29:37,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:29:37,860 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-10-27 01:29:37,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 01:29:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-10-27 01:29:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 01:29:37,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:29:37,861 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:29:37,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 01:29:37,861 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:29:37,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:29:37,862 INFO L82 PathProgramCache]: Analyzing trace with hash -653767017, now seen corresponding path program 2 times [2020-10-27 01:29:37,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:29:37,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018626256] [2020-10-27 01:29:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:29:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:29:37,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:38,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:39,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:39,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:42,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:29:42,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 01:29:42,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:29:42,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 01:29:42,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:29:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-27 01:29:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:29:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 01:29:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:29:43,161 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-27 01:29:43,372 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-27 01:29:43,634 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-10-27 01:29:43,883 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2020-10-27 01:29:44,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:29:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:29:44,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:44,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:29:44,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:29:44,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:29:44,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:29:44,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:29:44,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:29:44,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:29:44,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:29:44,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:29:44,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:29:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:29:44,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:44,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:29:44,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 01:29:44,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:29:44,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-27 01:29:44,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:29:44,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 01:29:44,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:29:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 01:29:44,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:29:45,511 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-27 01:29:45,734 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-27 01:29:45,958 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-27 01:29:45,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:29:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:29:45,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:45,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:29:45,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:29:45,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:29:45,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:29:45,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:29:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:29:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:29:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:29:45,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:29:46,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:29:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:29:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:46,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:29:46,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:29:46,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:29:46,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 01:29:46,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:29:46,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:29:46,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:29:46,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:29:46,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:29:46,632 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2020-10-27 01:29:46,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:29:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:29:46,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:46,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:29:46,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:29:46,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:29:46,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:29:46,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:29:46,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:29:46,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:29:46,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:29:46,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:29:46,996 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-10-27 01:29:47,553 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-27 01:29:47,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:29:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:29:47,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:29:47,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:29:47,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:29:47,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:29:47,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 01:29:47,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:29:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:29:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:29:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 01:29:47,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:29:48,791 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-10-27 01:29:49,560 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2020-10-27 01:29:50,955 WARN L193 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 88 [2020-10-27 01:29:53,191 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 127 DAG size of output: 122 [2020-10-27 01:30:16,855 WARN L193 SmtUtils]: Spent 22.17 s on a formula simplification. DAG size of input: 153 DAG size of output: 153 [2020-10-27 01:30:16,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:30:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:30:16,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:30:16,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:30:16,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:30:16,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:30:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 01:30:16,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:30:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:30:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:30:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:30:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:30:18,070 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-27 01:30:18,139 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:30:18,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018626256] [2020-10-27 01:30:18,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:30:18,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 01:30:18,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560460735] [2020-10-27 01:30:18,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 01:30:18,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:30:18,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 01:30:18,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1256, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 01:30:18,141 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 37 states. [2020-10-27 01:30:20,071 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2020-10-27 01:30:21,822 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-27 01:30:22,184 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-27 01:30:22,730 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-27 01:30:24,083 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56