/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/dll2n_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:27:08,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:27:08,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:27:08,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:27:08,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:27:08,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:27:08,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:27:08,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:27:08,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:27:08,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:27:08,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:27:08,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:27:08,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:27:08,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:27:08,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:27:08,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:27:08,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:27:08,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:27:08,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:27:08,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:27:08,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:27:08,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:27:08,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:27:08,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:27:08,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:27:08,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:27:08,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:27:08,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:27:08,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:27:08,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:27:08,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:27:08,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:27:08,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:27:08,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:27:08,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:27:08,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:27:08,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:27:08,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:27:08,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:27:08,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:27:08,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:27:08,933 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 [2020-10-29 09:27:08,995 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:27:08,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:27:08,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:27:08,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:27:08,998 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:27:08,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:27:08,998 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:27:08,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:27:08,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:27:08,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:27:08,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:27:08,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:27:08,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:27:09,000 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:27:09,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:27:09,000 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:27:09,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:27:09,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:27:09,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:27:09,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:27:09,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:27:09,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:27:09,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:27:09,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:27:09,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:27:09,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:27:09,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:27:09,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:27:09,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:27:09,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:27:09,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:27:09,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:27:09,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:27:09,408 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:27:09,410 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:27:09,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_append_equal.i [2020-10-29 09:27:09,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41dcc2567/faeb3727750c42a8838b805d2a2000f2/FLAG1bb11888d [2020-10-29 09:27:10,298 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:27:10,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_append_equal.i [2020-10-29 09:27:10,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41dcc2567/faeb3727750c42a8838b805d2a2000f2/FLAG1bb11888d [2020-10-29 09:27:10,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41dcc2567/faeb3727750c42a8838b805d2a2000f2 [2020-10-29 09:27:10,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:27:10,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:27:10,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:27:10,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:27:10,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:27:10,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:27:10" (1/1) ... [2020-10-29 09:27:10,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40cf9111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:10, skipping insertion in model container [2020-10-29 09:27:10,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:27:10" (1/1) ... [2020-10-29 09:27:10,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:27:10,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:27:11,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:27:11,045 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:27:11,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:27:11,179 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:27:11,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:11 WrapperNode [2020-10-29 09:27:11,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:27:11,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:27:11,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:27:11,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:27:11,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:11" (1/1) ... [2020-10-29 09:27:11,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:11" (1/1) ... [2020-10-29 09:27:11,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:11" (1/1) ... [2020-10-29 09:27:11,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:11" (1/1) ... [2020-10-29 09:27:11,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:11" (1/1) ... [2020-10-29 09:27:11,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:11" (1/1) ... [2020-10-29 09:27:11,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:11" (1/1) ... [2020-10-29 09:27:11,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:27:11,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:27:11,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:27:11,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:27:11,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:11" (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 [2020-10-29 09:27:11,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:27:11,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:27:11,379 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:27:11,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:27:11,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:27:11,381 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-29 09:27:11,382 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-29 09:27:11,382 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-10-29 09:27:11,382 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2020-10-29 09:27:11,382 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2020-10-29 09:27:11,384 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:27:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:27:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:27:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:27:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:27:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:27:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:27:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:27:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:27:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:27:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:27:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:27:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:27:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:27:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:27:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:27:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:27:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:27:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:27:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:27:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:27:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:27:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:27:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:27:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:27:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:27:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:27:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:27:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:27:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:27:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:27:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:27:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:27:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:27:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:27:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:27:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:27:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:27:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:27:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:27:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:27:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:27:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:27:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:27:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:27:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:27:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:27:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:27:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:27:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:27:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:27:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:27:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:27:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:27:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:27:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:27:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:27:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:27:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:27:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:27:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:27:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:27:11,404 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:27:11,404 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:27:11,404 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:27:11,405 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:27:11,405 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:27:11,405 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:27:11,405 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:27:11,405 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:27:11,405 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:27:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:27:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:27:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:27:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:27:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:27:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:27:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:27:11,407 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:27:11,407 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:27:11,407 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:27:11,407 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:27:11,407 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:27:11,407 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:27:11,407 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:27:11,407 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:27:11,407 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:27:11,407 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:27:11,408 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:27:11,408 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:27:11,408 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:27:11,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:27:11,408 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:27:11,408 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:27:11,408 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:27:11,408 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:27:11,408 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:27:11,408 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:27:11,409 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:27:11,409 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:27:11,409 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:27:11,409 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:27:11,409 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:27:11,409 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:27:11,409 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:27:11,409 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:27:11,411 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:27:11,411 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:27:11,412 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:27:11,412 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:27:11,412 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:27:11,412 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-29 09:27:11,412 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-29 09:27:11,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:27:11,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:27:11,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:27:11,412 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-10-29 09:27:11,413 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2020-10-29 09:27:11,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:27:11,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:27:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2020-10-29 09:27:11,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:27:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:27:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:27:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:27:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:27:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:27:11,791 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-29 09:27:12,042 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:27:12,042 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-29 09:27:12,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:27:12 BoogieIcfgContainer [2020-10-29 09:27:12,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:27:12,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:27:12,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:27:12,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:27:12,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:27:10" (1/3) ... [2020-10-29 09:27:12,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39dd33ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:27:12, skipping insertion in model container [2020-10-29 09:27:12,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:11" (2/3) ... [2020-10-29 09:27:12,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39dd33ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:27:12, skipping insertion in model container [2020-10-29 09:27:12,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:27:12" (3/3) ... [2020-10-29 09:27:12,053 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_append_equal.i [2020-10-29 09:27:12,065 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:27:12,071 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:27:12,085 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:27:12,113 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:27:12,114 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:27:12,114 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:27:12,114 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:27:12,114 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:27:12,114 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:27:12,114 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:27:12,114 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:27:12,133 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-29 09:27:12,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:27:12,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:12,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:27:12,142 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:12,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:12,149 INFO L82 PathProgramCache]: Analyzing trace with hash -725526549, now seen corresponding path program 1 times [2020-10-29 09:27:12,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:12,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146148511] [2020-10-29 09:27:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:12,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:12,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:12,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:12,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:27:12,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:27:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-29 09:27:12,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:12,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 09:27:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:12,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:27:12,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:27:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:12,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:12,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:12,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:27:12,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:12,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:27:12,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:12,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:12,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:12,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:12,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:12,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:12,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:27:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:12,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:12,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:12,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:12,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:12,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:27:12,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:27:12,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:12,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:12,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:27:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:12,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:27:12,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:27:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:12,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:12,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:12,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:27:12,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:12,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 09:27:12,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:12,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:12,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:12,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:12,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:12,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:27:12,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:12,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:12,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:12,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:12,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:12,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 09:27:12,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:12,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:12,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:12,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:12,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:12,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:27:12,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146148511] [2020-10-29 09:27:12,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:27:12,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:27:12,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507538298] [2020-10-29 09:27:12,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:27:12,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:27:12,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:27:12,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:27:12,917 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-10-29 09:27:13,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:27:13,195 INFO L93 Difference]: Finished difference Result 104 states and 136 transitions. [2020-10-29 09:27:13,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:27:13,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-29 09:27:13,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:27:13,207 INFO L225 Difference]: With dead ends: 104 [2020-10-29 09:27:13,208 INFO L226 Difference]: Without dead ends: 45 [2020-10-29 09:27:13,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:27:13,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-29 09:27:13,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2020-10-29 09:27:13,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 09:27:13,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-29 09:27:13,261 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 31 [2020-10-29 09:27:13,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:27:13,262 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-29 09:27:13,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:27:13,262 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-29 09:27:13,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:27:13,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:13,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:27:13,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:27:13,265 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:13,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:13,266 INFO L82 PathProgramCache]: Analyzing trace with hash 264092693, now seen corresponding path program 1 times [2020-10-29 09:27:13,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:13,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308013833] [2020-10-29 09:27:13,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:13,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:13,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:13,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:14,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:14,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:27:14,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:27:14,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1449 [2020-10-29 09:27:14,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:14,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:27:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 09:27:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:27:14,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:14,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:27:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:14,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:14,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:14,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:27:14,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:14,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:27:14,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:14,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:14,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:14,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:14,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:14,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:14,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:27:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:14,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:14,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:14,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:14,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:27:14,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:14,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:14,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:27:14,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:27:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:14,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:14,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:14,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:27:14,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:14,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 09:27:14,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:14,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:27:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:27:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:15,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:15,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:15,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:15,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:15,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:15,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 09:27:15,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:15,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:15,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:27:15,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:15,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:27:15,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:27:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:27:15,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308013833] [2020-10-29 09:27:15,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:27:15,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 09:27:15,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32228475] [2020-10-29 09:27:15,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:27:15,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:27:15,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:27:15,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:27:15,152 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 12 states. [2020-10-29 09:27:15,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:27:15,581 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2020-10-29 09:27:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:27:15,582 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-10-29 09:27:15,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:27:15,584 INFO L225 Difference]: With dead ends: 60 [2020-10-29 09:27:15,584 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 09:27:15,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:27:15,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 09:27:15,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2020-10-29 09:27:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 09:27:15,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-29 09:27:15,597 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 31 [2020-10-29 09:27:15,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:27:15,597 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-29 09:27:15,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:27:15,597 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-29 09:27:15,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:27:15,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:15,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:27:15,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:27:15,599 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:15,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:15,600 INFO L82 PathProgramCache]: Analyzing trace with hash 265701407, now seen corresponding path program 1 times [2020-10-29 09:27:15,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:15,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27580909] [2020-10-29 09:27:15,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:15,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:15,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:16,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:16,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:27:16,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:27:16,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-10-29 09:27:16,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:16,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:27:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:27:16,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:27:16,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:27:16,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:27:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:16,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:16,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:16,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:27:16,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:16,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:27:16,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:16,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:16,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:16,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:16,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:16,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:27:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:16,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:16,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:16,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:16,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:16,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:27:16,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:16,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:16,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:27:16,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:16,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:27:16,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:16,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:27:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:16,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:16,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:16,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:27:16,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:16,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 09:27:16,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:16,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:27:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:27:16,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:17,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:17,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:17,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:17,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:17,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 09:27:17,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:17,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:27:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:27:17,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:27:17,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27580909] [2020-10-29 09:27:17,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:27:17,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 09:27:17,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218184817] [2020-10-29 09:27:17,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:27:17,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:27:17,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:27:17,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:27:17,258 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 14 states. [2020-10-29 09:27:18,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:27:18,061 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2020-10-29 09:27:18,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:27:18,061 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-10-29 09:27:18,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:27:18,063 INFO L225 Difference]: With dead ends: 58 [2020-10-29 09:27:18,063 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 09:27:18,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:27:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 09:27:18,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2020-10-29 09:27:18,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 09:27:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-10-29 09:27:18,081 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 31 [2020-10-29 09:27:18,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:27:18,081 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-10-29 09:27:18,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:27:18,082 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-10-29 09:27:18,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 09:27:18,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:18,084 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] [2020-10-29 09:27:18,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:27:18,085 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:18,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:18,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1940517712, now seen corresponding path program 1 times [2020-10-29 09:27:18,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:18,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198626254] [2020-10-29 09:27:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:18,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:18,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:18,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 09:27:18,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:18,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 09:27:18,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:18,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:27:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:27:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:27:18,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:27:18,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:27:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:18,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:18,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:27:18,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:18,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:27:18,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:18,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:18,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:18,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:27:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:18,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:18,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:18,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:18,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:18,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:27:18,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:18,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:27:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:27:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:27:18,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:18,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:27:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:18,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:18,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:18,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:27:18,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:18,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:27:18,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:18,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 09:27:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:18,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:18,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:18,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:18,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:18,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:18,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:18,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:27:18,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:18,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:18,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:27:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:27:18,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198626254] [2020-10-29 09:27:18,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:27:18,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:27:18,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604569380] [2020-10-29 09:27:18,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:27:18,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:27:18,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:27:18,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:27:18,353 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 7 states. [2020-10-29 09:27:18,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:27:18,576 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2020-10-29 09:27:18,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:27:18,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-29 09:27:18,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:27:18,577 INFO L225 Difference]: With dead ends: 82 [2020-10-29 09:27:18,577 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 09:27:18,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:27:18,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 09:27:18,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-10-29 09:27:18,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 09:27:18,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-10-29 09:27:18,587 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 33 [2020-10-29 09:27:18,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:27:18,587 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-10-29 09:27:18,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:27:18,587 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-10-29 09:27:18,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:27:18,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:18,589 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] [2020-10-29 09:27:18,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:27:18,589 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:18,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:18,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1029280028, now seen corresponding path program 1 times [2020-10-29 09:27:18,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:18,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168102490] [2020-10-29 09:27:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:18,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:18,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:18,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:19,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:20,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:23,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:23,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:27:23,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:27:23,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:27:23,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:23,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:27:23,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:27:23,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:27:23,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:23,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:27:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:23,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:23,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:27:23,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:23,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:27:23,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:23,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:23,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:23,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:27:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:23,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:23,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:23,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:24,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:24,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:27:24,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:27:24,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-29 09:27:24,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:24,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:24,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:27:24,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:24,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:27:24,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:24,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:27:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:24,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:24,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:24,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:24,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:24,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:27:24,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 09:27:24,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:24,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:27:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:27:24,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:24,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 09:27:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:24,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:24,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:24,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:27:24,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:24,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 09:27:24,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:24,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:24,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:27:24,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:24,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:27:24,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:24,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:24,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:24,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:24,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:24,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:24,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 09:27:24,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:24,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:27:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:27:24,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:24,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:27:24,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168102490] [2020-10-29 09:27:24,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:27:24,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:27:24,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865095730] [2020-10-29 09:27:24,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:27:24,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:27:24,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:27:24,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:27:24,892 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 19 states. [2020-10-29 09:27:26,131 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-29 09:27:26,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:27:26,395 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2020-10-29 09:27:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:27:26,401 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 43 [2020-10-29 09:27:26,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:27:26,402 INFO L225 Difference]: With dead ends: 84 [2020-10-29 09:27:26,402 INFO L226 Difference]: Without dead ends: 45 [2020-10-29 09:27:26,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:27:26,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-29 09:27:26,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-29 09:27:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 09:27:26,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-29 09:27:26,425 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 43 [2020-10-29 09:27:26,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:27:26,426 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-29 09:27:26,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:27:26,426 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-29 09:27:26,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 09:27:26,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:26,428 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:27:26,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:27:26,432 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:26,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:26,433 INFO L82 PathProgramCache]: Analyzing trace with hash 142013717, now seen corresponding path program 1 times [2020-10-29 09:27:26,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:26,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138173083] [2020-10-29 09:27:26,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:26,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:26,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:26,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:26,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:26,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:27,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:28,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:29,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:31,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:31,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 09:27:31,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 09:27:31,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 09:27:31,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:31,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:27:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:27:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:27:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:31,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:27:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:31,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:31,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:31,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:27:31,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:31,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:27:31,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:31,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:31,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:31,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:31,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:31,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:31,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:27:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:31,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:31,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:31,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:27:31,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:27:31,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-29 09:27:31,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:31,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:27:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:27:31,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:31,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:27:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:31,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:31,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:31,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:31,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:31,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:27:31,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:31,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:31,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:27:31,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:31,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:27:31,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:31,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 09:27:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:31,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:32,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:32,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:32,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:27:32,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:27:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-29 09:27:32,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:32,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:27:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:27:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:33,020 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-29 09:27:33,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:33,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:33,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:33,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:33,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 09:27:33,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:33,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:27:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:27:33,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:27:33,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138173083] [2020-10-29 09:27:33,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:27:33,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-10-29 09:27:33,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152544876] [2020-10-29 09:27:33,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:27:33,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:27:33,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:27:33,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:27:33,268 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 21 states. [2020-10-29 09:27:34,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:27:34,364 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-10-29 09:27:34,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:27:34,365 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 44 [2020-10-29 09:27:34,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:27:34,366 INFO L225 Difference]: With dead ends: 53 [2020-10-29 09:27:34,366 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 09:27:34,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:27:34,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 09:27:34,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-10-29 09:27:34,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 09:27:34,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-10-29 09:27:34,376 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 44 [2020-10-29 09:27:34,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:27:34,377 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-10-29 09:27:34,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:27:34,377 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-10-29 09:27:34,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 09:27:34,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:34,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:27:34,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:27:34,378 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:34,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:34,379 INFO L82 PathProgramCache]: Analyzing trace with hash 143622431, now seen corresponding path program 1 times [2020-10-29 09:27:34,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:34,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124854538] [2020-10-29 09:27:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:34,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:34,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:34,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:35,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:35,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 09:27:35,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:27:35,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1460 [2020-10-29 09:27:35,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:35,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:35,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:27:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:27:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 09:27:35,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:35,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:27:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:35,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:35,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:35,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:27:35,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:35,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:27:35,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:35,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:35,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:35,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:27:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:36,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:36,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:36,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:36,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:27:36,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:27:36,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 09:27:36,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:36,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:36,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:27:36,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:36,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:27:36,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:27:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:36,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:36,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:36,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:36,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:36,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 09:27:36,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:36,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:27:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:27:36,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:36,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 09:27:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:36,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:36,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:36,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:27:36,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 09:27:36,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:36,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:27:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:27:36,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:37,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:37,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:37,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:37,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:37,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:37,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 09:27:37,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:37,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:37,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:27:37,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:37,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:27:37,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:37,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:27:37,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124854538] [2020-10-29 09:27:37,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:27:37,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:27:37,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911811560] [2020-10-29 09:27:37,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:27:37,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:27:37,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:27:37,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:27:37,371 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 21 states. [2020-10-29 09:27:38,815 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-29 09:27:39,154 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2020-10-29 09:27:39,473 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2020-10-29 09:27:39,811 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-10-29 09:27:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:27:40,038 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-10-29 09:27:40,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:27:40,039 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 44 [2020-10-29 09:27:40,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:27:40,041 INFO L225 Difference]: With dead ends: 67 [2020-10-29 09:27:40,041 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 09:27:40,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 09:27:40,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 09:27:40,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-29 09:27:40,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 09:27:40,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-29 09:27:40,055 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 44 [2020-10-29 09:27:40,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:27:40,056 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-29 09:27:40,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:27:40,056 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-29 09:27:40,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 09:27:40,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:40,057 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:27:40,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:27:40,058 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:40,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:40,058 INFO L82 PathProgramCache]: Analyzing trace with hash -365850659, now seen corresponding path program 1 times [2020-10-29 09:27:40,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:40,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822609211] [2020-10-29 09:27:40,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:40,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:40,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:41,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:41,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 09:27:41,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:27:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1120 [2020-10-29 09:27:41,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:41,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 09:27:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:27:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 09:27:41,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:41,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:27:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:41,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:41,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:41,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:27:41,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:27:41,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:41,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:41,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:27:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:41,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:41,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:41,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:27:41,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:41,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 09:27:41,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:41,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:41,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:27:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:27:41,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:41,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:27:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:41,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:41,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:41,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:41,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:41,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 09:27:41,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:41,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:41,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:27:41,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:41,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:27:41,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:41,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 09:27:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:41,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:42,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:42,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:27:42,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:42,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-29 09:27:42,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:42,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:42,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:27:42,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:42,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:27:42,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:42,486 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-29 09:27:42,836 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-29 09:27:43,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:43,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:43,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:43,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:43,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:43,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 09:27:43,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:43,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:27:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:27:43,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:43,781 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 39 [2020-10-29 09:27:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:27:43,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822609211] [2020-10-29 09:27:43,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:27:43,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:27:43,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712101467] [2020-10-29 09:27:43,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:27:43,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:27:43,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:27:43,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:27:43,813 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 24 states. [2020-10-29 09:27:45,544 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2020-10-29 09:27:46,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:27:46,026 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-10-29 09:27:46,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 09:27:46,026 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 44 [2020-10-29 09:27:46,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:27:46,028 INFO L225 Difference]: With dead ends: 69 [2020-10-29 09:27:46,028 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 09:27:46,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=132, Invalid=1200, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:27:46,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 09:27:46,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2020-10-29 09:27:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 09:27:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2020-10-29 09:27:46,042 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 44 [2020-10-29 09:27:46,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:27:46,042 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2020-10-29 09:27:46,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:27:46,043 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2020-10-29 09:27:46,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:27:46,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:46,044 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:27:46,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:27:46,044 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:46,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:46,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1584538758, now seen corresponding path program 1 times [2020-10-29 09:27:46,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:46,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568203244] [2020-10-29 09:27:46,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:46,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:46,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:46,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:46,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 09:27:46,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:27:46,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-29 09:27:46,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:46,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:27:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:27:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:27:46,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:46,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:27:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:46,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:46,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:46,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:27:46,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:46,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:27:46,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:46,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:46,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:46,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:27:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:46,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:46,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:46,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:46,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:27:46,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:27:46,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 09:27:46,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:46,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:27:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:27:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:27:46,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:46,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:27:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:46,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:46,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:46,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:46,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:46,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:27:46,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:46,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:27:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:27:46,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:46,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 09:27:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:46,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:46,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:46,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:27:46,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:46,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:27:46,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:46,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:46,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:46,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 09:27:46,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:46,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:46,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:46,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:46,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:46,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:46,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:46,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:27:46,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:46,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:46,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:46,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:46,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:46,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 09:27:46,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568203244] [2020-10-29 09:27:46,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:27:46,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:27:46,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974465731] [2020-10-29 09:27:46,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:27:46,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:27:46,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:27:46,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:27:46,617 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 8 states. [2020-10-29 09:27:46,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:27:46,879 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2020-10-29 09:27:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:27:46,880 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-29 09:27:46,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:27:46,882 INFO L225 Difference]: With dead ends: 99 [2020-10-29 09:27:46,882 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 09:27:46,883 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 [2020-10-29 09:27:46,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 09:27:46,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2020-10-29 09:27:46,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 09:27:46,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-29 09:27:46,896 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 46 [2020-10-29 09:27:46,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:27:46,896 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-29 09:27:46,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:27:46,897 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-29 09:27:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 09:27:46,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:46,901 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:27:46,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:27:46,901 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:46,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:46,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1339436954, now seen corresponding path program 2 times [2020-10-29 09:27:46,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:46,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080751270] [2020-10-29 09:27:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:46,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:46,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:48,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:51,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:51,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 09:27:51,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:27:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4776 [2020-10-29 09:27:51,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:51,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 09:27:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:27:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 09:27:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:51,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:27:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:51,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:51,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:51,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:27:51,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:51,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:27:51,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:51,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:51,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:51,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:27:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:51,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:51,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:52,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:52,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:27:52,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:27:52,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-29 09:27:52,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:52,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:52,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:27:52,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:52,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:27:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:52,853 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-29 09:27:53,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:27:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:53,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:53,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:53,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:53,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:53,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:27:53,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:53,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:27:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:27:53,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:53,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:27:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:53,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:53,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:53,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:53,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:53,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 09:27:53,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:53,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:27:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:27:53,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:53,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:27:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:53,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:53,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:53,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:27:53,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:53,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 09:27:53,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:53,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:53,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:27:53,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:27:53,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:54,120 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-29 09:27:54,292 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-29 09:27:54,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:54,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:54,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:54,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:54,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:54,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 09:27:54,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:54,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:54,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:27:54,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:54,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:27:54,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:54,893 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-10-29 09:27:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:27:54,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080751270] [2020-10-29 09:27:54,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:27:54,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 09:27:54,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932003370] [2020-10-29 09:27:54,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 09:27:54,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:27:54,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 09:27:54,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:27:54,922 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 28 states. [2020-10-29 09:27:55,716 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2020-10-29 09:27:56,684 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-29 09:27:56,927 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-29 09:27:57,398 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2020-10-29 09:27:57,603 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-29 09:27:58,069 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-10-29 09:27:58,387 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2020-10-29 09:27:58,776 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 82 [2020-10-29 09:27:59,161 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-10-29 09:27:59,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:27:59,461 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2020-10-29 09:27:59,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 09:27:59,462 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 56 [2020-10-29 09:27:59,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:27:59,463 INFO L225 Difference]: With dead ends: 78 [2020-10-29 09:27:59,463 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 09:27:59,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=194, Invalid=1968, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 09:27:59,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 09:27:59,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2020-10-29 09:27:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 09:27:59,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2020-10-29 09:27:59,479 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 56 [2020-10-29 09:27:59,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:27:59,480 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2020-10-29 09:27:59,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 09:27:59,480 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2020-10-29 09:27:59,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 09:27:59,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:59,481 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] [2020-10-29 09:27:59,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:27:59,482 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:59,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:59,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1583723044, now seen corresponding path program 1 times [2020-10-29 09:27:59,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:59,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320707767] [2020-10-29 09:27:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:59,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:01,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:01,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 09:28:01,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1770 [2020-10-29 09:28:01,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:01,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 09:28:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 09:28:01,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:01,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:01,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:01,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:01,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:01,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:01,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:28:01,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:01,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:01,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:01,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:01,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:02,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:02,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:28:02,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:02,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-29 09:28:02,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:02,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:28:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 09:28:02,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:02,468 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 42 [2020-10-29 09:28:02,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:28:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:02,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:02,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:02,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:02,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:02,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:28:02,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:02,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:02,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:28:02,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:02,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:28:02,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:02,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:28:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:02,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:02,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:02,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:02,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:28:02,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:02,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:28:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:28:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:02,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:28:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:03,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:03,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:28:03,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:03,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-29 09:28:03,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:03,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:28:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:28:03,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:03,863 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-29 09:28:04,344 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2020-10-29 09:28:04,827 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-10-29 09:28:05,374 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 85 [2020-10-29 09:28:05,969 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-10-29 09:28:05,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:05,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:06,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:06,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:06,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:06,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 09:28:06,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:06,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:28:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:28:06,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:06,652 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 49 [2020-10-29 09:28:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:28:06,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320707767] [2020-10-29 09:28:06,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:06,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 09:28:06,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468244024] [2020-10-29 09:28:06,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 09:28:06,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:06,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 09:28:06,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:28:06,691 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand 31 states. [2020-10-29 09:28:07,282 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 09:28:08,234 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 09:28:09,203 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 09:28:10,314 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 92 [2020-10-29 09:28:11,179 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 102 [2020-10-29 09:28:12,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:12,153 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2020-10-29 09:28:12,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 09:28:12,154 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 56 [2020-10-29 09:28:12,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:12,155 INFO L225 Difference]: With dead ends: 78 [2020-10-29 09:28:12,155 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 09:28:12,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=190, Invalid=2066, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 09:28:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 09:28:12,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-10-29 09:28:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 09:28:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-10-29 09:28:12,173 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 56 [2020-10-29 09:28:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:12,174 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-10-29 09:28:12,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 09:28:12,174 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-10-29 09:28:12,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:28:12,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:12,175 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:28:12,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:28:12,176 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:12,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:12,176 INFO L82 PathProgramCache]: Analyzing trace with hash -875465471, now seen corresponding path program 3 times [2020-10-29 09:28:12,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:12,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469107270] [2020-10-29 09:28:12,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:12,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:12,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:12,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 09:28:12,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:12,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 09:28:12,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:12,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:28:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 09:28:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:28:12,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:12,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:12,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:12,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:12,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:12,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:12,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:28:12,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:12,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:12,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:12,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:12,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:12,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:12,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:28:12,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:12,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 09:28:12,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:12,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:12,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:28:12,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:28:12,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:28:12,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:12,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:28:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:12,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:12,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:12,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:12,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:12,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:28:12,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:12,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:12,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:28:12,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:12,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:28:12,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:12,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:28:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:12,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:12,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:12,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:12,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:28:12,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:12,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:12,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:12,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:28:12,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:12,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:12,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:28:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:12,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:12,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:12,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:28:12,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:12,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:28:12,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:12,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 09:28:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:12,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:12,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:12,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:12,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:12,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:12,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:12,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:28:12,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:12,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:12,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-29 09:28:12,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469107270] [2020-10-29 09:28:12,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:28:12,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:28:12,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134393696] [2020-10-29 09:28:12,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:28:12,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:12,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:28:12,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:28:12,654 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 5 states. [2020-10-29 09:28:12,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:12,859 INFO L93 Difference]: Finished difference Result 109 states and 123 transitions. [2020-10-29 09:28:12,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:28:12,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-29 09:28:12,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:12,860 INFO L225 Difference]: With dead ends: 109 [2020-10-29 09:28:12,860 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 09:28:12,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:28:12,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 09:28:12,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-29 09:28:12,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 09:28:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2020-10-29 09:28:12,884 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 58 [2020-10-29 09:28:12,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:12,886 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2020-10-29 09:28:12,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:28:12,886 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2020-10-29 09:28:12,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:28:12,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:12,891 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] [2020-10-29 09:28:12,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:28:12,891 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:12,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:12,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1543958549, now seen corresponding path program 1 times [2020-10-29 09:28:12,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:12,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757470768] [2020-10-29 09:28:12,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:12,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:13,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:14,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:15,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:16,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:17,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:17,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 09:28:17,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:28:17,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-29 09:28:17,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:17,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:17,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:28:17,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:17,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 09:28:17,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:18,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:18,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:18,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:18,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:18,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:18,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:28:18,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:18,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:18,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:18,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:18,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:18,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:18,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:28:18,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:18,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 09:28:18,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:18,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:28:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:28:18,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:18,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:28:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:18,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:18,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:18,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:18,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:18,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:28:18,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:18,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:18,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:18,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:28:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:18,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:18,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:18,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:18,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:28:18,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:18,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:18,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:18,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:28:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:18,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:18,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:18,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:18,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:28:18,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:28:18,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-29 09:28:18,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:18,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:28:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:28:18,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:20,633 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 259 DAG size of output: 75 [2020-10-29 09:28:21,628 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 80 [2020-10-29 09:28:22,551 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 69 [2020-10-29 09:28:22,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:22,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:22,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:22,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:22,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:22,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:28:22,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:22,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:22,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:28:22,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:22,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:28:22,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 09:28:22,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757470768] [2020-10-29 09:28:22,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:22,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:28:22,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259968871] [2020-10-29 09:28:22,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:28:22,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:22,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:28:22,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:28:22,656 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand 16 states. [2020-10-29 09:28:23,332 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-29 09:28:23,965 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 110 [2020-10-29 09:28:24,419 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2020-10-29 09:28:24,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:24,866 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-10-29 09:28:24,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:28:24,866 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-10-29 09:28:24,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:24,868 INFO L225 Difference]: With dead ends: 79 [2020-10-29 09:28:24,868 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 09:28:24,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:28:24,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 09:28:24,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2020-10-29 09:28:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 09:28:24,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2020-10-29 09:28:24,882 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 58 [2020-10-29 09:28:24,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:24,883 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2020-10-29 09:28:24,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:28:24,883 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2020-10-29 09:28:24,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:28:24,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:24,884 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:28:24,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:28:24,884 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:24,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:24,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1545567263, now seen corresponding path program 1 times [2020-10-29 09:28:24,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:24,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630661119] [2020-10-29 09:28:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:24,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:26,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:28,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:28,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 09:28:28,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:28:28,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3926 [2020-10-29 09:28:28,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:28,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:28,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 09:28:28,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:28,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 09:28:28,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:29,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:29,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:29,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:29,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:29,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:28:29,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:29,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:29,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:29,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:29,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:29,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:29,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:28:29,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-29 09:28:29,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:29,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:28:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:28:29,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:28:30,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:28:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:30,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:30,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:30,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:30,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:30,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:28:30,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:30,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:28:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:30,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:28:30,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:30,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:28:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:30,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:30,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:30,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:30,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:30,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:28:30,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:30,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:30,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:28:30,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:30,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:28:30,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:30,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:28:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:30,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:30,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:30,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:28:30,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:30,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-29 09:28:30,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:30,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:28:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:28:30,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:31,417 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-29 09:28:31,923 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 77 [2020-10-29 09:28:32,483 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-29 09:28:33,166 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2020-10-29 09:28:33,742 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2020-10-29 09:28:33,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:33,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:33,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:33,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:33,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:33,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 09:28:33,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:33,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:33,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:28:33,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:33,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:28:33,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:34,543 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2020-10-29 09:28:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:28:34,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630661119] [2020-10-29 09:28:34,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:34,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 09:28:34,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669092157] [2020-10-29 09:28:34,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 09:28:34,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:34,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 09:28:34,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:28:34,588 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand 32 states. [2020-10-29 09:28:35,293 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 09:28:36,164 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-29 09:28:36,625 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 09:28:37,930 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-29 09:28:38,988 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-29 09:28:39,800 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2020-10-29 09:28:40,845 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 101 [2020-10-29 09:28:42,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:42,251 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-10-29 09:28:42,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 09:28:42,252 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 58 [2020-10-29 09:28:42,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:42,253 INFO L225 Difference]: With dead ends: 77 [2020-10-29 09:28:42,253 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 09:28:42,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=204, Invalid=2448, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 09:28:42,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 09:28:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2020-10-29 09:28:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 09:28:42,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-29 09:28:42,267 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 58 [2020-10-29 09:28:42,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:42,268 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-29 09:28:42,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 09:28:42,268 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-29 09:28:42,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:28:42,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:42,270 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-29 09:28:42,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:28:42,273 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:42,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:42,273 INFO L82 PathProgramCache]: Analyzing trace with hash -627318977, now seen corresponding path program 2 times [2020-10-29 09:28:42,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:42,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872707060] [2020-10-29 09:28:42,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:42,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:42,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:44,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:47,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:47,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 09:28:47,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:28:47,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4992 [2020-10-29 09:28:47,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:47,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:47,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 09:28:47,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:47,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 09:28:47,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:47,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:47,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:47,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:47,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:47,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:47,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:28:47,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:47,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:47,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:47,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:47,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:47,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:47,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:47,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:47,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:47,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:28:47,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:28:47,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-29 09:28:47,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:47,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:47,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:28:47,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:47,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:28:47,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:48,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:28:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:48,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:48,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:48,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:48,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:28:48,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:48,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:28:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:28:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:48,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:28:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:48,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:48,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:48,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:48,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:48,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 09:28:48,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:48,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:28:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:28:48,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:48,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:28:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:48,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:48,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:48,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:28:48,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:48,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 09:28:48,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:48,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:48,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:28:48,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:48,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:28:48,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:49,432 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-10-29 09:28:49,638 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-29 09:28:49,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:49,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:49,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:49,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:49,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 09:28:49,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:49,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:28:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:28:49,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:50,219 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-29 09:28:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:28:50,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872707060] [2020-10-29 09:28:50,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:50,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 09:28:50,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399046052] [2020-10-29 09:28:50,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 09:28:50,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:50,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 09:28:50,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:28:50,248 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 28 states. [2020-10-29 09:28:51,139 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-29 09:28:52,666 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-29 09:28:53,225 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-29 09:28:53,616 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2020-10-29 09:28:54,077 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2020-10-29 09:28:54,359 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-10-29 09:28:54,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:54,808 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2020-10-29 09:28:54,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 09:28:54,809 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 58 [2020-10-29 09:28:54,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:54,811 INFO L225 Difference]: With dead ends: 80 [2020-10-29 09:28:54,811 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 09:28:54,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=166, Invalid=1904, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 09:28:54,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 09:28:54,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2020-10-29 09:28:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 09:28:54,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-10-29 09:28:54,823 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 58 [2020-10-29 09:28:54,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:54,824 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-10-29 09:28:54,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 09:28:54,824 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-10-29 09:28:54,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 09:28:54,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:54,825 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:28:54,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 09:28:54,825 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:54,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:54,825 INFO L82 PathProgramCache]: Analyzing trace with hash -764008624, now seen corresponding path program 2 times [2020-10-29 09:28:54,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:54,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402245538] [2020-10-29 09:28:54,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:54,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:55,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:56,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:58,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:59,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:59,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 09:28:59,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:28:59,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 09:28:59,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:59,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 09:28:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 09:28:59,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:00,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:00,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:00,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:00,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:00,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:29:00,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:00,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:00,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:00,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:00,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:00,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:00,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:29:00,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:00,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 09:29:00,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:00,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:29:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:00,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:29:00,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:00,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:29:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:00,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:00,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:00,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:00,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:00,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:29:00,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:00,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:00,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:00,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:00,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:00,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:00,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:29:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:00,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:00,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:00,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:00,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:00,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:29:00,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:00,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:00,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:00,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:00,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:29:00,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:00,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:29:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:00,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:00,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:01,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:01,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:01,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:29:01,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:29:01,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-10-29 09:29:01,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:01,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:29:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:29:01,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:02,325 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-10-29 09:29:03,294 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 40 [2020-10-29 09:29:08,260 WARN L193 SmtUtils]: Spent 4.48 s on a formula simplification. DAG size of input: 458 DAG size of output: 67 [2020-10-29 09:29:13,160 WARN L193 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 458 DAG size of output: 66 [2020-10-29 09:29:16,683 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 410 DAG size of output: 49 [2020-10-29 09:29:16,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:16,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:16,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:16,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:16,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:16,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:29:16,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:16,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:16,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:29:16,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:16,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:29:16,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:16,992 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 09:29:16,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402245538] [2020-10-29 09:29:16,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:16,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 09:29:16,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496088948] [2020-10-29 09:29:16,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 09:29:16,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:16,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 09:29:16,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:29:16,995 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 28 states. [2020-10-29 09:29:18,652 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 09:29:19,457 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-29 09:29:20,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:20,590 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-29 09:29:20,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 09:29:20,591 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 60 [2020-10-29 09:29:20,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:20,592 INFO L225 Difference]: With dead ends: 81 [2020-10-29 09:29:20,592 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 09:29:20,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=180, Invalid=2076, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 09:29:20,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 09:29:20,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 69. [2020-10-29 09:29:20,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 09:29:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-10-29 09:29:20,607 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 60 [2020-10-29 09:29:20,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:20,608 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-10-29 09:29:20,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 09:29:20,608 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-10-29 09:29:20,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 09:29:20,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:20,609 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:29:20,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 09:29:20,609 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:20,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:20,614 INFO L82 PathProgramCache]: Analyzing trace with hash -762399910, now seen corresponding path program 2 times [2020-10-29 09:29:20,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:20,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613897095] [2020-10-29 09:29:20,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:20,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:21,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:22,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:25,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:25,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 09:29:25,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:29:25,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 09:29:25,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:25,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 09:29:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 09:29:25,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:26,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:26,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:26,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:26,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:26,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:26,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:29:26,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:26,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:26,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:26,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:26,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:26,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:26,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:26,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:26,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:29:26,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:26,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-29 09:29:26,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:26,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:29:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:29:26,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:26,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:29:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:26,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:26,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:26,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:26,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:26,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:29:26,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:26,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:29:26,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:27,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:29:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:27,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:27,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:27,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:27,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:27,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 09:29:27,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:27,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:27,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:29:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:29:27,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:27,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:29:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:27,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:27,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:27,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:29:27,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:27,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-29 09:29:27,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:27,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:29:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:29:27,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:27,912 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-29 09:29:28,328 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-10-29 09:29:28,798 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2020-10-29 09:29:29,458 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 88 [2020-10-29 09:29:29,668 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-29 09:29:29,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:29,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:29,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:29,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:29,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:29,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 09:29:29,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:29,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:29,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:29:29,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:29,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:30,152 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-29 09:29:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:29:30,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613897095] [2020-10-29 09:29:30,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:30,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 09:29:30,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368728527] [2020-10-29 09:29:30,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 09:29:30,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:30,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 09:29:30,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=921, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:29:30,188 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 32 states. [2020-10-29 09:29:31,795 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-10-29 09:29:32,682 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 82 [2020-10-29 09:29:33,652 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 115 [2020-10-29 09:29:34,308 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 09:29:35,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:35,478 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-29 09:29:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 09:29:35,479 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 60 [2020-10-29 09:29:35,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:35,480 INFO L225 Difference]: With dead ends: 81 [2020-10-29 09:29:35,480 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 09:29:35,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=181, Invalid=2269, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 09:29:35,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 09:29:35,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2020-10-29 09:29:35,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 09:29:35,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2020-10-29 09:29:35,493 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 60 [2020-10-29 09:29:35,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:35,493 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2020-10-29 09:29:35,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 09:29:35,493 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2020-10-29 09:29:35,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 09:29:35,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:35,494 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-29 09:29:35,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 09:29:35,494 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:35,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:35,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1777630155, now seen corresponding path program 3 times [2020-10-29 09:29:35,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:35,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992417097] [2020-10-29 09:29:35,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:35,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:35,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:36,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:36,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 09:29:36,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:29:36,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1117 [2020-10-29 09:29:36,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:36,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:29:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 09:29:36,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:36,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:36,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:36,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:36,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:36,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:29:36,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:36,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:36,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:36,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:36,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:36,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:36,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:29:36,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:29:36,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 09:29:36,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:36,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:29:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:29:36,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:36,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:29:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:36,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:36,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:36,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:36,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:36,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:29:36,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:36,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:36,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:36,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:36,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:36,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:36,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:29:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:36,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:36,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:36,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:36,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:36,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:29:36,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:36,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:36,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:36,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:36,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:36,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:36,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:29:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:36,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:36,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:36,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:29:36,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:36,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:29:36,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:36,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:29:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:29:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:36,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:36,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:36,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:36,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:36,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:36,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:29:36,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:36,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:36,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 09:29:36,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992417097] [2020-10-29 09:29:36,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:36,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:29:36,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272098538] [2020-10-29 09:29:36,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:29:36,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:36,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:29:36,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:29:36,972 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 9 states. [2020-10-29 09:29:37,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:37,361 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2020-10-29 09:29:37,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:29:37,362 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-29 09:29:37,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:37,363 INFO L225 Difference]: With dead ends: 89 [2020-10-29 09:29:37,364 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 09:29:37,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:29:37,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 09:29:37,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 77. [2020-10-29 09:29:37,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 09:29:37,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2020-10-29 09:29:37,377 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 62 [2020-10-29 09:29:37,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:37,378 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2020-10-29 09:29:37,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:29:37,378 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2020-10-29 09:29:37,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 09:29:37,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:37,379 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-29 09:29:37,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 09:29:37,379 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:37,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:37,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1779238869, now seen corresponding path program 3 times [2020-10-29 09:29:37,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:37,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247367239] [2020-10-29 09:29:37,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:37,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:39,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:40,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:40,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:40,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:41,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:42,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:42,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 09:29:42,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:29:42,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 09:29:42,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:42,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 09:29:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 09:29:42,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:42,719 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-10-29 09:29:42,895 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-29 09:29:43,072 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2020-10-29 09:29:43,279 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2020-10-29 09:29:43,425 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-10-29 09:29:43,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:43,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:43,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:43,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:43,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:43,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:29:43,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:43,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:43,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:43,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:43,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:43,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:43,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:43,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:43,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:43,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:44,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:44,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:29:44,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:29:44,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-29 09:29:44,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:44,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:29:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:29:44,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:45,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:29:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:45,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:45,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:45,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:45,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:45,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:29:45,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:45,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:29:45,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:45,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:29:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:45,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:45,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:45,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:45,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:45,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:29:45,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:45,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:29:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:29:45,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:45,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:29:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:45,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:45,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:45,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:29:45,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:45,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-29 09:29:45,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:45,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:45,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:29:45,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:45,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:29:45,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:46,573 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-29 09:29:46,976 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2020-10-29 09:29:48,469 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 178 DAG size of output: 127 [2020-10-29 09:29:49,378 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 133 [2020-10-29 09:29:49,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:49,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:49,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:49,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:49,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:49,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 09:29:49,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:49,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:29:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:49,896 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-29 09:29:49,942 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:29:49,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247367239] [2020-10-29 09:29:49,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:49,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 09:29:49,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473760072] [2020-10-29 09:29:49,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 09:29:49,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:49,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 09:29:49,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1047, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 09:29:49,945 INFO L87 Difference]: Start difference. First operand 77 states and 90 transitions. Second operand 34 states. [2020-10-29 09:29:53,062 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 09:29:53,688 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-29 09:29:53,880 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 09:29:54,197 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-10-29 09:29:54,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:54,499 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2020-10-29 09:29:54,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 09:29:54,499 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 62 [2020-10-29 09:29:54,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:54,503 INFO L225 Difference]: With dead ends: 87 [2020-10-29 09:29:54,503 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 09:29:54,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=198, Invalid=2558, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 09:29:54,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 09:29:54,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-10-29 09:29:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 09:29:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2020-10-29 09:29:54,526 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 62 [2020-10-29 09:29:54,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:54,526 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2020-10-29 09:29:54,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 09:29:54,527 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2020-10-29 09:29:54,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 09:29:54,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:54,529 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 09:29:54,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 09:29:54,529 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:54,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:54,530 INFO L82 PathProgramCache]: Analyzing trace with hash -392520533, now seen corresponding path program 3 times [2020-10-29 09:29:54,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:54,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694331934] [2020-10-29 09:29:54,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:54,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:54,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:59,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:59,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 09:29:59,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:29:59,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4962 [2020-10-29 09:29:59,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:59,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-29 09:29:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 09:29:59,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:59,699 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-10-29 09:29:59,834 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-10-29 09:29:59,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:59,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:59,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:59,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:59,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:59,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:29:59,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:59,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:59,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:00,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:00,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:30:00,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:00,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-10-29 09:30:00,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:00,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:00,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 09:30:00,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:00,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 09:30:00,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:01,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:30:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:01,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:01,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:01,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:01,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:30:01,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:01,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:30:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:30:01,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:01,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:30:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:01,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:01,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:01,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:01,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:30:01,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:01,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:30:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:30:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:01,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:30:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:01,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:01,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:01,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:01,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 09:30:01,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:01,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:30:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:02,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:30:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:02,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:02,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:02,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:30:02,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:02,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-29 09:30:02,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:02,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:02,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:30:02,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:02,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:30:02,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:03,860 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-10-29 09:30:04,513 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-10-29 09:30:05,015 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2020-10-29 09:30:05,393 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2020-10-29 09:30:05,757 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-29 09:30:06,944 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 124 [2020-10-29 09:30:07,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:07,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:07,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:07,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:07,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:07,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 09:30:07,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:07,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:07,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:30:07,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:07,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:07,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:08,402 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 39 [2020-10-29 09:30:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:30:08,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694331934] [2020-10-29 09:30:08,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:30:08,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 09:30:08,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144257989] [2020-10-29 09:30:08,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 09:30:08,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:30:08,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 09:30:08,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1296, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 09:30:08,455 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand 38 states. [2020-10-29 09:30:09,382 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-29 09:30:10,334 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-29 09:30:10,970 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-29 09:30:12,362 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-29 09:30:12,648 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-29 09:30:14,092 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 100 [2020-10-29 09:30:15,010 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 107 [2020-10-29 09:30:16,008 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 113 [2020-10-29 09:30:17,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:30:17,136 INFO L93 Difference]: Finished difference Result 101 states and 122 transitions. [2020-10-29 09:30:17,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 09:30:17,137 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 68 [2020-10-29 09:30:17,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:30:17,139 INFO L225 Difference]: With dead ends: 101 [2020-10-29 09:30:17,139 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 09:30:17,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=250, Invalid=2830, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 09:30:17,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 09:30:17,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2020-10-29 09:30:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 09:30:17,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2020-10-29 09:30:17,155 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 68 [2020-10-29 09:30:17,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:30:17,156 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2020-10-29 09:30:17,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 09:30:17,156 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2020-10-29 09:30:17,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 09:30:17,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:30:17,157 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-29 09:30:17,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 09:30:17,157 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:30:17,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:30:17,158 INFO L82 PathProgramCache]: Analyzing trace with hash 456105350, now seen corresponding path program 4 times [2020-10-29 09:30:17,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:30:17,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629517381] [2020-10-29 09:30:17,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:30:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:17,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:17,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:22,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:22,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 09:30:22,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:30:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 09:30:22,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:22,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 09:30:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:30:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 09:30:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:22,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:30:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:22,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:22,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:22,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:30:22,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:22,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:30:22,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:22,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:22,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:22,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:22,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:22,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:22,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:30:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:22,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:22,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:30:22,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:22,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-29 09:30:22,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:22,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:30:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:30:22,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:23,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:30:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:23,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:23,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:23,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:23,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:23,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:30:23,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:23,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:23,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:30:23,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:23,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:30:23,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:23,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:30:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:23,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:23,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:23,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:23,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:23,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:30:23,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:23,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:30:23,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:23,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:23,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:23,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:30:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:23,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:23,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:23,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:30:23,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:23,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 09:30:23,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:23,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:30:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:30:23,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:24,208 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-10-29 09:30:24,550 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-10-29 09:30:24,880 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-10-29 09:30:25,319 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2020-10-29 09:30:25,606 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-29 09:30:25,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:25,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:25,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:25,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:25,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:25,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 09:30:25,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:25,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:25,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:30:25,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:25,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:25,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:26,065 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2020-10-29 09:30:26,100 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:30:26,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629517381] [2020-10-29 09:30:26,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:30:26,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 09:30:26,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410419952] [2020-10-29 09:30:26,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 09:30:26,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:30:26,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 09:30:26,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=927, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:30:26,102 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand 32 states. [2020-10-29 09:30:27,006 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-29 09:30:29,053 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-29 09:30:29,516 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2020-10-29 09:30:30,252 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 81 [2020-10-29 09:30:31,002 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-10-29 09:30:32,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:30:32,106 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2020-10-29 09:30:32,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 09:30:32,108 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 64 [2020-10-29 09:30:32,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:30:32,109 INFO L225 Difference]: With dead ends: 94 [2020-10-29 09:30:32,109 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 09:30:32,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=187, Invalid=2465, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 09:30:32,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 09:30:32,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-10-29 09:30:32,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 09:30:32,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2020-10-29 09:30:32,125 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 64 [2020-10-29 09:30:32,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:30:32,125 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2020-10-29 09:30:32,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 09:30:32,125 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2020-10-29 09:30:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 09:30:32,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:30:32,126 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 09:30:32,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 09:30:32,126 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:30:32,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:30:32,126 INFO L82 PathProgramCache]: Analyzing trace with hash 749425884, now seen corresponding path program 5 times [2020-10-29 09:30:32,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:30:32,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393277398] [2020-10-29 09:30:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:30:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:32,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:32,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:32,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:34,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:36,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:37,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:37,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 09:30:37,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:30:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 09:30:37,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:37,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:30:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:30:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 09:30:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:37,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:30:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:37,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:37,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:30:37,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:37,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:30:37,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:37,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:37,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:37,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:37,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:37,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:37,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:30:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:37,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:37,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:37,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:30:37,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:37,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 09:30:37,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:37,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:37,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:30:37,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:37,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:30:37,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:37,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:30:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:37,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:37,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:37,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:37,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:37,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:30:37,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:37,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:37,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:37,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:37,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:37,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:30:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:37,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:37,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:37,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:37,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:37,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:30:37,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:37,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:37,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:37,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:30:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:37,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:37,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:37,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:37,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:37,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:30:37,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:37,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:37,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:37,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:30:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:37,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:37,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:37,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:37,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:30:37,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:30:37,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-29 09:30:37,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:37,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:30:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:30:37,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:38,269 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 28 [2020-10-29 09:30:39,555 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 150 DAG size of output: 69 [2020-10-29 09:30:41,432 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 332 DAG size of output: 52 [2020-10-29 09:30:42,538 WARN L193 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 52 [2020-10-29 09:30:43,181 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 45 [2020-10-29 09:30:43,869 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 39 [2020-10-29 09:30:43,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:43,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:43,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:43,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:43,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:43,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:30:43,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:43,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:30:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:30:43,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-29 09:30:44,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393277398] [2020-10-29 09:30:44,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:30:44,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:30:44,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539623388] [2020-10-29 09:30:44,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:30:44,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:30:44,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:30:44,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:30:44,039 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand 18 states. [2020-10-29 09:30:44,911 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-29 09:30:45,574 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2020-10-29 09:30:45,903 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 09:30:46,144 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-29 09:30:46,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:30:46,698 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-10-29 09:30:46,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:30:46,700 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 70 [2020-10-29 09:30:46,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:30:46,701 INFO L225 Difference]: With dead ends: 77 [2020-10-29 09:30:46,701 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 09:30:46,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:30:46,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 09:30:46,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-29 09:30:46,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 09:30:46,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2020-10-29 09:30:46,714 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 70 [2020-10-29 09:30:46,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:30:46,715 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2020-10-29 09:30:46,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:30:46,715 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2020-10-29 09:30:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 09:30:46,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:30:46,716 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 09:30:46,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 09:30:46,716 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:30:46,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:30:46,717 INFO L82 PathProgramCache]: Analyzing trace with hash 751034598, now seen corresponding path program 4 times [2020-10-29 09:30:46,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:30:46,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740593931] [2020-10-29 09:30:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:30:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:46,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:47,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:49,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:51,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:51,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 09:30:51,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:30:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 09:30:51,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:51,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-29 09:30:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:30:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 09:30:51,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:51,966 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-29 09:30:52,113 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-29 09:30:52,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:30:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:52,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:52,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:52,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:30:52,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:52,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:30:52,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:52,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:52,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:52,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:30:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:53,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:53,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:30:53,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:53,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-10-29 09:30:53,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:53,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:30:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:30:53,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:53,635 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2020-10-29 09:30:53,799 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-10-29 09:30:54,136 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-10-29 09:30:54,433 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-29 09:30:54,633 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-29 09:30:54,809 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-29 09:30:54,988 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-29 09:30:54,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:30:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:54,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:55,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:55,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:55,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:55,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:30:55,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:55,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:55,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:30:55,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:55,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:30:55,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:55,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:30:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:55,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:55,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:55,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:55,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:55,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:30:55,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:55,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:55,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:30:55,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:55,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:30:55,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:55,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:30:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:55,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:55,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:55,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:55,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:55,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 09:30:55,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:55,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:30:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:55,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:56,004 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-29 09:30:56,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:30:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:56,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:56,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:56,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:30:56,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:56,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-29 09:30:56,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:56,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:30:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:30:56,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0