/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/heap-data/process_queue.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:34:31,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:34:31,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:34:31,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:34:31,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:34:31,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:34:31,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:34:31,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:34:31,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:34:31,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:34:31,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:34:31,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:34:31,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:34:31,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:34:31,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:34:31,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:34:31,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:34:31,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:34:31,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:34:31,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:34:31,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:34:31,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:34:31,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:34:31,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:34:31,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:34:31,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:34:31,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:34:31,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:34:31,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:34:31,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:34:31,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:34:31,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:34:31,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:34:31,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:34:31,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:34:31,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:34:31,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:34:31,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:34:31,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:34:31,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:34:31,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:34:31,566 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 [2020-10-28 14:34:31,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:34:31,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:34:31,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:34:31,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:34:31,628 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:34:31,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:34:31,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:34:31,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:34:31,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:34:31,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:34:31,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:34:31,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:34:31,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:34:31,632 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:34:31,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:34:31,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:34:31,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:34:31,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:34:31,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:34:31,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:34:31,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:34:31,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:34:31,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:34:31,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:34:31,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:34:31,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:34:31,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:34:31,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:34:31,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:34:31,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:34:32,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:34:32,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:34:32,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:34:32,108 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:34:32,109 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:34:32,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/process_queue.i [2020-10-28 14:34:32,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbcac8a4d/8d06f8c9643943e7ab6808e21095a616/FLAG7b168806a [2020-10-28 14:34:33,008 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:34:33,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/process_queue.i [2020-10-28 14:34:33,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbcac8a4d/8d06f8c9643943e7ab6808e21095a616/FLAG7b168806a [2020-10-28 14:34:33,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbcac8a4d/8d06f8c9643943e7ab6808e21095a616 [2020-10-28 14:34:33,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:34:33,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:34:33,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:34:33,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:34:33,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:34:33,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:34:33" (1/1) ... [2020-10-28 14:34:33,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e7ada54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:33, skipping insertion in model container [2020-10-28 14:34:33,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:34:33" (1/1) ... [2020-10-28 14:34:33,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:34:33,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:34:33,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:34:33,769 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:34:33,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:34:33,946 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:34:33,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:33 WrapperNode [2020-10-28 14:34:33,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:34:33,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:34:33,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:34:33,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:34:33,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:33" (1/1) ... [2020-10-28 14:34:33,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:33" (1/1) ... [2020-10-28 14:34:33,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:33" (1/1) ... [2020-10-28 14:34:33,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:33" (1/1) ... [2020-10-28 14:34:34,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:33" (1/1) ... [2020-10-28 14:34:34,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:33" (1/1) ... [2020-10-28 14:34:34,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:33" (1/1) ... [2020-10-28 14:34:34,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:34:34,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:34:34,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:34:34,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:34:34,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:33" (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 [2020-10-28 14:34:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:34:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:34:34,125 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:34:34,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:34:34,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:34:34,125 INFO L138 BoogieDeclarations]: Found implementation of procedure run_process [2020-10-28 14:34:34,125 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2020-10-28 14:34:34,125 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_next [2020-10-28 14:34:34,126 INFO L138 BoogieDeclarations]: Found implementation of procedure check_queue [2020-10-28 14:34:34,126 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:34:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:34:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:34:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:34:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:34:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:34:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:34:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:34:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:34:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:34:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:34:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:34:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:34:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:34:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:34:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:34:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:34:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:34:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:34:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:34:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:34:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:34:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:34:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:34:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:34:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:34:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:34:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:34:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:34:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:34:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:34:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:34:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:34:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:34:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:34:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:34:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:34:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:34:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:34:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:34:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:34:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:34:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:34:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:34:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:34:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:34:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:34:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:34:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:34:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:34:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:34:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:34:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:34:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:34:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:34:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:34:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:34:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:34:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:34:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:34:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:34:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:34:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:34:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:34:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:34:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:34:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:34:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:34:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:34:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:34:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:34:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:34:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:34:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:34:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:34:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:34:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:34:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:34:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:34:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:34:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:34:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:34:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:34:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:34:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:34:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:34:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:34:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:34:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:34:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:34:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:34:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:34:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:34:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:34:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:34:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:34:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:34:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:34:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:34:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:34:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:34:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:34:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:34:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:34:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:34:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:34:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:34:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:34:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:34:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:34:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:34:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:34:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure run_process [2020-10-28 14:34:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2020-10-28 14:34:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:34:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:34:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure choose_next [2020-10-28 14:34:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:34:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:34:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure check_queue [2020-10-28 14:34:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:34:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:34:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:34:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:34:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:34:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:34:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:34:34,670 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:34:34,670 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 14:34:34,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:34:34 BoogieIcfgContainer [2020-10-28 14:34:34,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:34:34,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:34:34,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:34:34,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:34:34,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:34:33" (1/3) ... [2020-10-28 14:34:34,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@982489d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:34:34, skipping insertion in model container [2020-10-28 14:34:34,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:33" (2/3) ... [2020-10-28 14:34:34,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@982489d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:34:34, skipping insertion in model container [2020-10-28 14:34:34,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:34:34" (3/3) ... [2020-10-28 14:34:34,682 INFO L111 eAbstractionObserver]: Analyzing ICFG process_queue.i [2020-10-28 14:34:34,694 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:34:34,699 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:34:34,713 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:34:34,741 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:34:34,742 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:34:34,742 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:34:34,742 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:34:34,742 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:34:34,742 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:34:34,742 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:34:34,742 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:34:34,761 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-28 14:34:34,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 14:34:34,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:34,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:34,769 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:34,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:34,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1921262304, now seen corresponding path program 1 times [2020-10-28 14:34:34,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:34,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844018274] [2020-10-28 14:34:34,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:35,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:35,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:35,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:34:35,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:35,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-28 14:34:35,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:35,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:35,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:34:35,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:35,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:34:35,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:34:35,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:35,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:35,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:35,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:35,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:34:35,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:35,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:35,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:35,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:35,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:35,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:35,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844018274] [2020-10-28 14:34:35,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:34:35,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:34:35,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627459372] [2020-10-28 14:34:35,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:34:35,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:35,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:34:35,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:34:35,603 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 7 states. [2020-10-28 14:34:36,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:36,038 INFO L93 Difference]: Finished difference Result 106 states and 143 transitions. [2020-10-28 14:34:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:34:36,040 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-28 14:34:36,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:36,050 INFO L225 Difference]: With dead ends: 106 [2020-10-28 14:34:36,051 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 14:34:36,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:34:36,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 14:34:36,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-28 14:34:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 14:34:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-28 14:34:36,107 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 19 [2020-10-28 14:34:36,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:36,107 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-28 14:34:36,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:34:36,108 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-28 14:34:36,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:34:36,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:36,109 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] [2020-10-28 14:34:36,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:34:36,110 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:36,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:36,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1963549366, now seen corresponding path program 1 times [2020-10-28 14:34:36,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:36,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014176338] [2020-10-28 14:34:36,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:36,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:36,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:36,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 14:34:36,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:36,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-10-28 14:34:36,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:36,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:36,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:34:36,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:36,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:34:36,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:37,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:37,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:37,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:37,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:37,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:34:37,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:37,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:37,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:37,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:37,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:37,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:34:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:37,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:37,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:37,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:37,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:37,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 14:34:37,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:37,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:37,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:37,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:37,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:37,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:37,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:37,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014176338] [2020-10-28 14:34:37,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:34:37,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 14:34:37,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820285809] [2020-10-28 14:34:37,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:34:37,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:37,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:34:37,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:34:37,245 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 12 states. [2020-10-28 14:34:38,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:38,120 INFO L93 Difference]: Finished difference Result 123 states and 154 transitions. [2020-10-28 14:34:38,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:34:38,121 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-10-28 14:34:38,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:38,124 INFO L225 Difference]: With dead ends: 123 [2020-10-28 14:34:38,124 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 14:34:38,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:34:38,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 14:34:38,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2020-10-28 14:34:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-28 14:34:38,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2020-10-28 14:34:38,145 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 22 [2020-10-28 14:34:38,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:38,146 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2020-10-28 14:34:38,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:34:38,146 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2020-10-28 14:34:38,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:34:38,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:38,148 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:38,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:34:38,148 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:38,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:38,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1598909245, now seen corresponding path program 1 times [2020-10-28 14:34:38,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:38,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359260201] [2020-10-28 14:34:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:38,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:38,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:38,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 14:34:38,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:38,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-28 14:34:38,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:38,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:38,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:34:38,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:38,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:34:38,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:38,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:38,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:38,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:38,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:38,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:38,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:34:38,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:38,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:38,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:38,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:38,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:38,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:34:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:38,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:38,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:38,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:38,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 14:34:38,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:38,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:38,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:38,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:38,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:38,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:38,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359260201] [2020-10-28 14:34:38,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:38,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:34:38,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93170832] [2020-10-28 14:34:38,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:34:38,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:38,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:34:38,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:34:38,851 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 12 states. [2020-10-28 14:34:39,531 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-28 14:34:40,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:40,147 INFO L93 Difference]: Finished difference Result 144 states and 183 transitions. [2020-10-28 14:34:40,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:34:40,148 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-28 14:34:40,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:40,150 INFO L225 Difference]: With dead ends: 144 [2020-10-28 14:34:40,150 INFO L226 Difference]: Without dead ends: 83 [2020-10-28 14:34:40,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-10-28 14:34:40,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-28 14:34:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2020-10-28 14:34:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 14:34:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2020-10-28 14:34:40,167 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 25 [2020-10-28 14:34:40,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:40,167 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2020-10-28 14:34:40,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:34:40,167 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2020-10-28 14:34:40,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 14:34:40,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:40,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:40,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:34:40,169 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:40,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:40,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1960062015, now seen corresponding path program 1 times [2020-10-28 14:34:40,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:40,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542346073] [2020-10-28 14:34:40,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:40,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:42,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:42,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 14:34:42,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:34:42,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2765 [2020-10-28 14:34:42,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:42,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:34:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:34:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:34:42,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:43,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:43,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:43,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:43,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:43,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:43,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:34:43,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:43,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:43,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:43,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:34:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:43,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:43,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:43,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:43,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:43,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:34:43,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:43,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:34:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:34:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:43,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:34:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:43,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:43,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:43,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:34:43,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:43,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:34:43,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:43,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:34:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:34:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:34:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:43,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 14:34:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:43,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:43,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:43,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:43,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:43,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:34:43,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:43,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:34:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:43,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:34:43,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542346073] [2020-10-28 14:34:43,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:43,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:34:43,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219256720] [2020-10-28 14:34:43,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:34:43,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:43,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:34:43,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:34:43,210 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand 10 states. [2020-10-28 14:34:43,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:43,860 INFO L93 Difference]: Finished difference Result 161 states and 206 transitions. [2020-10-28 14:34:43,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:34:43,861 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-28 14:34:43,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:43,863 INFO L225 Difference]: With dead ends: 161 [2020-10-28 14:34:43,863 INFO L226 Difference]: Without dead ends: 99 [2020-10-28 14:34:43,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:34:43,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-28 14:34:43,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2020-10-28 14:34:43,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-28 14:34:43,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 119 transitions. [2020-10-28 14:34:43,882 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 119 transitions. Word has length 37 [2020-10-28 14:34:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:43,882 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 119 transitions. [2020-10-28 14:34:43,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:34:43,883 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 119 transitions. [2020-10-28 14:34:43,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 14:34:43,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:43,884 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:43,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:34:43,885 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:43,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:43,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1405681298, now seen corresponding path program 1 times [2020-10-28 14:34:43,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:43,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364291362] [2020-10-28 14:34:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:43,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:44,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:44,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 14:34:44,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:44,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-28 14:34:44,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:44,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:34:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 14:34:44,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:44,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:44,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:44,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:44,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:44,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:44,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:44,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:44,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:44,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:34:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:44,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:44,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:44,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:44,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:44,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:34:44,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:44,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:34:44,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:44,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:34:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:44,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:44,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:44,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:34:44,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:44,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:34:44,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:44,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:44,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:34:44,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:44,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:34:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:44,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:44,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:44,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:44,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:44,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:34:44,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:44,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:44,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:34:44,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364291362] [2020-10-28 14:34:44,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:44,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:34:44,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339966660] [2020-10-28 14:34:44,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:34:44,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:44,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:34:44,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:34:44,831 INFO L87 Difference]: Start difference. First operand 94 states and 119 transitions. Second operand 13 states. [2020-10-28 14:34:46,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:46,319 INFO L93 Difference]: Finished difference Result 218 states and 290 transitions. [2020-10-28 14:34:46,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 14:34:46,319 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-28 14:34:46,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:46,322 INFO L225 Difference]: With dead ends: 218 [2020-10-28 14:34:46,322 INFO L226 Difference]: Without dead ends: 141 [2020-10-28 14:34:46,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2020-10-28 14:34:46,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-28 14:34:46,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 131. [2020-10-28 14:34:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-28 14:34:46,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 171 transitions. [2020-10-28 14:34:46,347 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 171 transitions. Word has length 40 [2020-10-28 14:34:46,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:46,347 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 171 transitions. [2020-10-28 14:34:46,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:34:46,347 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 171 transitions. [2020-10-28 14:34:46,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 14:34:46,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:46,349 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:46,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:34:46,350 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:46,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:46,350 INFO L82 PathProgramCache]: Analyzing trace with hash -476912487, now seen corresponding path program 2 times [2020-10-28 14:34:46,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:46,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364255832] [2020-10-28 14:34:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:46,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:46,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:49,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:49,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 14:34:49,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:34:49,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3163 [2020-10-28 14:34:49,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:49,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 14:34:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:49,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 14:34:49,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:49,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:49,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:49,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:49,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:49,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:49,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:49,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:49,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:49,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:49,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:49,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:49,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:34:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:49,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:49,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:49,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:49,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:49,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 14:34:49,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:49,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:49,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:49,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:49,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:34:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:50,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:50,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:50,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:34:50,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:50,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:34:50,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:50,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:50,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:34:50,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:50,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:34:50,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:50,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:34:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:50,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:50,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:50,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:50,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:50,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:34:50,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:50,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:50,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:50,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:50,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:50,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:34:50,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364255832] [2020-10-28 14:34:50,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:50,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:34:50,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189004339] [2020-10-28 14:34:50,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:34:50,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:50,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:34:50,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:34:50,190 INFO L87 Difference]: Start difference. First operand 131 states and 171 transitions. Second operand 16 states. [2020-10-28 14:34:52,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:52,093 INFO L93 Difference]: Finished difference Result 203 states and 271 transitions. [2020-10-28 14:34:52,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:34:52,097 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2020-10-28 14:34:52,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:52,099 INFO L225 Difference]: With dead ends: 203 [2020-10-28 14:34:52,100 INFO L226 Difference]: Without dead ends: 197 [2020-10-28 14:34:52,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:34:52,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-28 14:34:52,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2020-10-28 14:34:52,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-28 14:34:52,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 251 transitions. [2020-10-28 14:34:52,134 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 251 transitions. Word has length 43 [2020-10-28 14:34:52,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:52,134 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 251 transitions. [2020-10-28 14:34:52,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:34:52,135 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 251 transitions. [2020-10-28 14:34:52,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:34:52,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:52,137 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:52,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:34:52,137 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:52,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:52,138 INFO L82 PathProgramCache]: Analyzing trace with hash 295415182, now seen corresponding path program 3 times [2020-10-28 14:34:52,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:52,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579855511] [2020-10-28 14:34:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:52,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:52,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:55,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:55,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 14:34:55,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:34:55,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3088 [2020-10-28 14:34:55,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:55,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:55,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 14:34:55,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:55,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 14:34:55,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:55,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:55,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:55,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:55,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:55,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:55,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:55,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:55,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:55,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:55,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:55,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:55,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:34:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:55,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:55,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:55,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:55,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:34:55,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:55,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:55,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:34:55,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:55,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:34:55,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:55,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:34:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:55,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:55,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:55,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:34:55,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:55,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:34:55,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:55,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:34:55,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:56,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:34:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:56,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:56,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:56,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:56,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:56,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:34:56,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:56,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:56,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:56,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:34:56,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:56,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:56,361 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-28 14:34:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:34:56,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579855511] [2020-10-28 14:34:56,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:56,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 14:34:56,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147498969] [2020-10-28 14:34:56,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 14:34:56,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:56,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 14:34:56,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:34:56,384 INFO L87 Difference]: Start difference. First operand 187 states and 251 transitions. Second operand 21 states. [2020-10-28 14:34:56,969 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2020-10-28 14:34:57,752 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-28 14:34:58,794 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-28 14:34:59,311 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-10-28 14:34:59,564 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-28 14:35:00,966 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-28 14:35:01,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:01,092 INFO L93 Difference]: Finished difference Result 498 states and 711 transitions. [2020-10-28 14:35:01,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 14:35:01,094 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 46 [2020-10-28 14:35:01,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:01,104 INFO L225 Difference]: With dead ends: 498 [2020-10-28 14:35:01,105 INFO L226 Difference]: Without dead ends: 359 [2020-10-28 14:35:01,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=256, Invalid=1724, Unknown=0, NotChecked=0, Total=1980 [2020-10-28 14:35:01,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-28 14:35:01,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 346. [2020-10-28 14:35:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-28 14:35:01,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 489 transitions. [2020-10-28 14:35:01,196 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 489 transitions. Word has length 46 [2020-10-28 14:35:01,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:01,197 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 489 transitions. [2020-10-28 14:35:01,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 14:35:01,197 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 489 transitions. [2020-10-28 14:35:01,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:35:01,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:01,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:01,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:35:01,204 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:01,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:01,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1464567217, now seen corresponding path program 1 times [2020-10-28 14:35:01,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:01,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395953650] [2020-10-28 14:35:01,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:01,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:01,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:02,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:02,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 14:35:02,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:35:02,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-10-28 14:35:02,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:02,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:02,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:35:02,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:02,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 14:35:02,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:02,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:02,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:02,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:02,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:02,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:02,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:02,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:02,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:02,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:02,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:35:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:02,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:02,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:02,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:02,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:02,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:35:02,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:02,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:02,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:02,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:02,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:02,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:35:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:02,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:02,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:02,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:35:02,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:02,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:35:02,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:02,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:35:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:02,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 14:35:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:02,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:02,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:02,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:35:02,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:02,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 14:35:02,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:02,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:35:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:02,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:35:02,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:02,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 14:35:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:02,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:02,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:02,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:02,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:02,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:02,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:02,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:02,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:35:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:02,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:02,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:35:02,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395953650] [2020-10-28 14:35:02,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:02,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:35:02,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220153828] [2020-10-28 14:35:02,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:35:02,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:02,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:35:02,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:35:02,925 INFO L87 Difference]: Start difference. First operand 346 states and 489 transitions. Second operand 11 states. [2020-10-28 14:35:03,580 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-28 14:35:04,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:04,007 INFO L93 Difference]: Finished difference Result 465 states and 671 transitions. [2020-10-28 14:35:04,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:35:04,008 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-28 14:35:04,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:04,017 INFO L225 Difference]: With dead ends: 465 [2020-10-28 14:35:04,018 INFO L226 Difference]: Without dead ends: 355 [2020-10-28 14:35:04,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:35:04,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-28 14:35:04,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 354. [2020-10-28 14:35:04,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-28 14:35:04,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 513 transitions. [2020-10-28 14:35:04,101 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 513 transitions. Word has length 52 [2020-10-28 14:35:04,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:04,105 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 513 transitions. [2020-10-28 14:35:04,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:35:04,105 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 513 transitions. [2020-10-28 14:35:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 14:35:04,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:04,115 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:04,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:35:04,115 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:04,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:04,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1610048827, now seen corresponding path program 1 times [2020-10-28 14:35:04,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:04,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096894434] [2020-10-28 14:35:04,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:04,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:04,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:09,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:09,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 14:35:09,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:35:09,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 14:35:09,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:09,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:09,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:35:09,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 14:35:09,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 14:35:09,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:09,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:09,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:09,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:09,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:09,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:09,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:35:09,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:09,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:09,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:09,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:09,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:09,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:09,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:35:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:09,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:09,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:09,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:09,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:09,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:35:09,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:09,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:09,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:09,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:09,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:09,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:09,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:35:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:09,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:09,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:09,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:35:09,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:09,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:35:09,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:09,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:09,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:09,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:09,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:35:09,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:09,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 14:35:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:09,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:09,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:09,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:09,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 14:35:09,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:35:09,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 14:35:09,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:09,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:35:09,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:09,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:35:09,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:09,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 14:35:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:09,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:09,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:09,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:09,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:09,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:09,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:09,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:09,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:35:09,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096894434] [2020-10-28 14:35:09,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:09,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:35:09,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125973973] [2020-10-28 14:35:09,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:35:09,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:09,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:35:09,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:35:09,674 INFO L87 Difference]: Start difference. First operand 354 states and 513 transitions. Second operand 15 states. [2020-10-28 14:35:11,587 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-28 14:35:12,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:12,394 INFO L93 Difference]: Finished difference Result 674 states and 990 transitions. [2020-10-28 14:35:12,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 14:35:12,395 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-28 14:35:12,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:12,399 INFO L225 Difference]: With dead ends: 674 [2020-10-28 14:35:12,399 INFO L226 Difference]: Without dead ends: 460 [2020-10-28 14:35:12,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 14:35:12,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-28 14:35:12,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 442. [2020-10-28 14:35:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-28 14:35:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 645 transitions. [2020-10-28 14:35:12,457 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 645 transitions. Word has length 53 [2020-10-28 14:35:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:12,457 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 645 transitions. [2020-10-28 14:35:12,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:35:12,458 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 645 transitions. [2020-10-28 14:35:12,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 14:35:12,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:12,459 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:12,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:35:12,460 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:12,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:12,460 INFO L82 PathProgramCache]: Analyzing trace with hash 792400377, now seen corresponding path program 1 times [2020-10-28 14:35:12,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:12,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019221064] [2020-10-28 14:35:12,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:12,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:12,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:12,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 14:35:12,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:12,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 14:35:12,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:12,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:12,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:12,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 14:35:12,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:35:12,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:12,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:12,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:12,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:12,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:12,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:12,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:12,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:12,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:12,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:12,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:12,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:12,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:12,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:35:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:12,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:12,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:12,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:12,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:12,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:12,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:12,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:12,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:12,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:12,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:12,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:35:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:12,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:12,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:12,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:35:12,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:12,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:12,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:12,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:12,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:12,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 14:35:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:12,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:12,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 14:35:12,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:35:12,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:12,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:12,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:35:12,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:35:12,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:12,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 14:35:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:12,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:12,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:12,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:12,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:12,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:35:12,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:12,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:12,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:12,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:35:12,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:12,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:35:12,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019221064] [2020-10-28 14:35:12,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:35:12,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:35:12,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482263772] [2020-10-28 14:35:12,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:35:12,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:12,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:35:12,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:35:12,690 INFO L87 Difference]: Start difference. First operand 442 states and 645 transitions. Second operand 5 states. [2020-10-28 14:35:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:12,969 INFO L93 Difference]: Finished difference Result 635 states and 948 transitions. [2020-10-28 14:35:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:35:12,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-28 14:35:12,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:12,974 INFO L225 Difference]: With dead ends: 635 [2020-10-28 14:35:12,974 INFO L226 Difference]: Without dead ends: 449 [2020-10-28 14:35:12,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:35:12,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-10-28 14:35:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 443. [2020-10-28 14:35:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-10-28 14:35:13,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 645 transitions. [2020-10-28 14:35:13,027 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 645 transitions. Word has length 53 [2020-10-28 14:35:13,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:13,027 INFO L481 AbstractCegarLoop]: Abstraction has 443 states and 645 transitions. [2020-10-28 14:35:13,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:35:13,027 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 645 transitions. [2020-10-28 14:35:13,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 14:35:13,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:13,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:13,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:35:13,029 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:13,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:13,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1437881979, now seen corresponding path program 1 times [2020-10-28 14:35:13,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:13,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171189092] [2020-10-28 14:35:13,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:13,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:13,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:15,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:17,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:35:17,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:35:17,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4335 [2020-10-28 14:35:17,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:17,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:17,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 14:35:17,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:17,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 14:35:17,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:17,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:17,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:17,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:17,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:17,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:17,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:17,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:17,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:17,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:17,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:17,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:17,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:35:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:17,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:17,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:17,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:17,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:35:17,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:17,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:17,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:17,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:35:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:17,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:17,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:35:17,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:17,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:35:17,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:17,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:17,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:17,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:35:17,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:17,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 14:35:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:17,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:18,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:18,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:35:18,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:35:18,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 14:35:18,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:18,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:35:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:35:18,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:18,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 14:35:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:18,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:18,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:18,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:18,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:18,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:18,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:18,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:18,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:18,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:18,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:35:18,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171189092] [2020-10-28 14:35:18,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:18,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 14:35:18,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554967094] [2020-10-28 14:35:18,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 14:35:18,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:18,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 14:35:18,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:35:18,331 INFO L87 Difference]: Start difference. First operand 443 states and 645 transitions. Second operand 18 states. [2020-10-28 14:35:20,962 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-28 14:35:21,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:21,620 INFO L93 Difference]: Finished difference Result 700 states and 1032 transitions. [2020-10-28 14:35:21,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 14:35:21,622 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2020-10-28 14:35:21,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:21,628 INFO L225 Difference]: With dead ends: 700 [2020-10-28 14:35:21,629 INFO L226 Difference]: Without dead ends: 513 [2020-10-28 14:35:21,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=211, Invalid=1511, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 14:35:21,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-28 14:35:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 470. [2020-10-28 14:35:21,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-10-28 14:35:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 670 transitions. [2020-10-28 14:35:21,692 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 670 transitions. Word has length 56 [2020-10-28 14:35:21,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:21,693 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 670 transitions. [2020-10-28 14:35:21,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 14:35:21,694 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 670 transitions. [2020-10-28 14:35:21,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 14:35:21,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:21,696 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:21,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:35:21,696 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:21,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:21,697 INFO L82 PathProgramCache]: Analyzing trace with hash 839335669, now seen corresponding path program 4 times [2020-10-28 14:35:21,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:21,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675246091] [2020-10-28 14:35:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:21,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:21,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:24,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:26,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:26,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 14:35:26,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:35:26,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 14:35:26,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:26,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:26,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 14:35:26,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:26,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 14:35:26,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:27,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:27,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:27,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:27,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:27,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:27,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:27,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:27,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:27,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:27,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:27,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:27,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:27,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:35:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:27,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:27,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:27,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:27,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:27,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:35:27,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:27,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:27,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:27,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:35:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:27,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:27,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:27,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:35:27,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:27,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:35:27,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:27,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:35:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:27,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:35:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:27,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:27,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:27,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:27,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:27,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:35:27,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:27,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:35:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:35:27,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:27,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:35:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:27,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:27,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:27,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:35:27,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:35:27,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:27,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:35:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:27,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 14:35:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:27,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:27,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:27,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:27,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:27,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:35:27,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:27,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:27,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 14:35:27,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675246091] [2020-10-28 14:35:27,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:27,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 14:35:27,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820059272] [2020-10-28 14:35:27,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 14:35:27,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:27,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 14:35:27,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:35:27,632 INFO L87 Difference]: Start difference. First operand 470 states and 670 transitions. Second operand 21 states. [2020-10-28 14:35:28,082 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-28 14:35:29,941 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-10-28 14:35:30,099 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-10-28 14:35:30,260 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-10-28 14:35:30,421 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-28 14:35:30,575 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-28 14:35:31,580 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2020-10-28 14:35:31,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:31,835 INFO L93 Difference]: Finished difference Result 569 states and 805 transitions. [2020-10-28 14:35:31,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 14:35:31,836 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 61 [2020-10-28 14:35:31,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:31,844 INFO L225 Difference]: With dead ends: 569 [2020-10-28 14:35:31,844 INFO L226 Difference]: Without dead ends: 555 [2020-10-28 14:35:31,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=284, Invalid=1786, Unknown=0, NotChecked=0, Total=2070 [2020-10-28 14:35:31,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-10-28 14:35:31,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 432. [2020-10-28 14:35:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-10-28 14:35:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 612 transitions. [2020-10-28 14:35:31,911 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 612 transitions. Word has length 61 [2020-10-28 14:35:31,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:31,912 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 612 transitions. [2020-10-28 14:35:31,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 14:35:31,912 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 612 transitions. [2020-10-28 14:35:31,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 14:35:31,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:31,914 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:31,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:35:31,914 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:31,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:31,915 INFO L82 PathProgramCache]: Analyzing trace with hash 915427605, now seen corresponding path program 1 times [2020-10-28 14:35:31,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:31,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324721635] [2020-10-28 14:35:31,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:31,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:31,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:32,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:33,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:33,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:36,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:36,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 14:35:36,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:35:36,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 14:35:36,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:36,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:35:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:35:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:35:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:36,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:36,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:36,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:36,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:36,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:36,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:36,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:36,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:36,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:37,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:35:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:37,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:37,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:37,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:37,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:37,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:35:37,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:37,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:37,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:35:37,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:37,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:35:37,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:37,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:35:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:37,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:37,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:37,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:35:37,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:37,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:35:37,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:37,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:35:37,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:37,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 14:35:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:37,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:37,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:37,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:35:37,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:37,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:35:37,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:37,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:37,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:37,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:37,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:35:37,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:37,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 14:35:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:37,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:37,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:37,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:37,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:35:37,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:37,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:35:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:37,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:37,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 14:35:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:37,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:37,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:37,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:35:37,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:37,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:37,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:37,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:35:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:37,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:37,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 14:35:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:37,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:37,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:37,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:37,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:37,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:37,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:37,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:35:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:37,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:37,125 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 14:35:37,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324721635] [2020-10-28 14:35:37,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:37,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:35:37,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078819640] [2020-10-28 14:35:37,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:35:37,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:37,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:35:37,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:35:37,128 INFO L87 Difference]: Start difference. First operand 432 states and 612 transitions. Second operand 9 states. [2020-10-28 14:35:37,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:37,722 INFO L93 Difference]: Finished difference Result 724 states and 1031 transitions. [2020-10-28 14:35:37,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:35:37,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-28 14:35:37,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:37,727 INFO L225 Difference]: With dead ends: 724 [2020-10-28 14:35:37,727 INFO L226 Difference]: Without dead ends: 349 [2020-10-28 14:35:37,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:35:37,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-28 14:35:37,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 329. [2020-10-28 14:35:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-10-28 14:35:37,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 441 transitions. [2020-10-28 14:35:37,766 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 441 transitions. Word has length 67 [2020-10-28 14:35:37,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:37,767 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 441 transitions. [2020-10-28 14:35:37,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:35:37,767 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 441 transitions. [2020-10-28 14:35:37,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 14:35:37,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:37,768 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:37,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 14:35:37,768 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:37,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:37,769 INFO L82 PathProgramCache]: Analyzing trace with hash -2038777891, now seen corresponding path program 5 times [2020-10-28 14:35:37,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:37,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938045082] [2020-10-28 14:35:37,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:37,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:38,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:38,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:42,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:42,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 14:35:42,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:35:42,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 14:35:42,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:42,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 14:35:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 14:35:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:43,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:43,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:43,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:43,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:43,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:35:43,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:43,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:43,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:43,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:43,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:43,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:43,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:35:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:43,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:43,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:43,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:43,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:43,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:35:43,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:43,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:43,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:35:43,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:35:43,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:43,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:35:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:43,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:43,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:43,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:35:43,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:43,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:35:43,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:43,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:43,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:43,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:35:43,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:43,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:35:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:43,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:43,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:43,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:43,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:43,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:35:43,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:43,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:43,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:43,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:35:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:43,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:43,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:43,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:35:43,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:43,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 14:35:43,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:43,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:43,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:35:43,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:43,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:35:43,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:44,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 14:35:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:44,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:44,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:44,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:44,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:44,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:35:44,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:44,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:44,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:44,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:44,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:44,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:44,594 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 14:35:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 41 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:35:44,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938045082] [2020-10-28 14:35:44,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:44,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 14:35:44,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162082528] [2020-10-28 14:35:44,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 14:35:44,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:44,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 14:35:44,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:35:44,639 INFO L87 Difference]: Start difference. First operand 329 states and 441 transitions. Second operand 26 states. [2020-10-28 14:35:45,423 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2020-10-28 14:35:48,383 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-10-28 14:35:48,632 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-28 14:35:48,848 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2020-10-28 14:35:49,083 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-10-28 14:35:49,304 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-10-28 14:35:49,512 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-10-28 14:35:49,712 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-10-28 14:35:49,955 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2020-10-28 14:35:51,113 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-10-28 14:35:51,414 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2020-10-28 14:35:51,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:51,728 INFO L93 Difference]: Finished difference Result 523 states and 702 transitions. [2020-10-28 14:35:51,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 14:35:51,732 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 67 [2020-10-28 14:35:51,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:51,736 INFO L225 Difference]: With dead ends: 523 [2020-10-28 14:35:51,736 INFO L226 Difference]: Without dead ends: 519 [2020-10-28 14:35:51,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=361, Invalid=2609, Unknown=0, NotChecked=0, Total=2970 [2020-10-28 14:35:51,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-10-28 14:35:51,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 426. [2020-10-28 14:35:51,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-28 14:35:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 566 transitions. [2020-10-28 14:35:51,803 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 566 transitions. Word has length 67 [2020-10-28 14:35:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:51,803 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 566 transitions. [2020-10-28 14:35:51,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 14:35:51,803 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 566 transitions. [2020-10-28 14:35:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 14:35:51,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:51,807 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:51,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 14:35:51,808 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:51,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:51,808 INFO L82 PathProgramCache]: Analyzing trace with hash -738849872, now seen corresponding path program 2 times [2020-10-28 14:35:51,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:51,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582082019] [2020-10-28 14:35:51,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:51,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:52,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:52,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:52,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 14:35:52,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:35:52,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-28 14:35:52,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:52,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:52,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:35:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 14:35:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:52,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:52,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:52,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:52,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:52,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:52,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:52,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:52,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:52,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:35:52,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:35:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:52,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:52,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:52,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:52,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:52,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:35:52,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:52,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:52,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:52,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:52,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:52,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:52,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:35:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:52,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:52,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:52,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:35:52,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:52,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:35:52,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:52,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:35:52,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:35:52,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 14:35:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:52,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:52,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:52,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 14:35:52,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:52,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:35:52,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:52,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:35:52,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:35:52,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 14:35:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:52,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:52,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:52,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:52,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:52,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:52,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:52,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:52,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:52,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 14:35:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:52,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:52,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:52,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:35:52,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:52,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:35:52,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:52,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:52,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:52,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:52,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:35:52,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:52,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 14:35:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:52,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:52,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:52,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:52,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:35:52,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:52,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:52,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:35:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 14:35:52,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582082019] [2020-10-28 14:35:52,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:52,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:35:52,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263613434] [2020-10-28 14:35:52,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:35:52,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:52,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:35:52,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:35:52,821 INFO L87 Difference]: Start difference. First operand 426 states and 566 transitions. Second operand 14 states. [2020-10-28 14:35:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:53,871 INFO L93 Difference]: Finished difference Result 691 states and 932 transitions. [2020-10-28 14:35:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:35:53,872 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-10-28 14:35:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:53,876 INFO L225 Difference]: With dead ends: 691 [2020-10-28 14:35:53,877 INFO L226 Difference]: Without dead ends: 344 [2020-10-28 14:35:53,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:35:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-28 14:35:53,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 266. [2020-10-28 14:35:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-28 14:35:53,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 351 transitions. [2020-10-28 14:35:53,915 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 351 transitions. Word has length 68 [2020-10-28 14:35:53,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:53,915 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 351 transitions. [2020-10-28 14:35:53,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:35:53,915 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 351 transitions. [2020-10-28 14:35:53,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 14:35:53,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:53,917 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:53,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 14:35:53,917 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:53,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:53,918 INFO L82 PathProgramCache]: Analyzing trace with hash -118880397, now seen corresponding path program 2 times [2020-10-28 14:35:53,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:53,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619229547] [2020-10-28 14:35:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:53,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:54,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:54,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:55,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:58,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:58,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 14:35:58,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:35:58,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 14:35:58,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:58,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 14:35:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 14:35:58,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:59,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:59,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:59,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:59,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:59,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:59,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:35:59,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:59,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:59,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:59,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:59,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:35:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:59,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:59,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:59,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:59,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:35:59,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:59,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:59,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:35:59,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:59,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:35:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:59,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:59,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:59,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:35:59,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:59,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:35:59,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:59,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:35:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:35:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:59,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:35:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:59,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:59,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:59,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:59,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:59,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 14:35:59,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:59,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:59,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:59,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:59,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:35:59,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:59,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:35:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:59,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:59,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:59,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:35:59,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:35:59,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:59,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:35:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:35:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:59,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 14:35:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:59,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:59,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:59,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:35:59,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:59,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 14:35:59,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:59,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:35:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:35:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:35:59,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:59,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 14:35:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:59,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:59,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:59,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:59,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:35:59,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:59,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:59,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:59,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:35:59,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:59,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:59,609 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:35:59,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619229547] [2020-10-28 14:35:59,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:59,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:35:59,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283840025] [2020-10-28 14:35:59,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:35:59,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:59,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:35:59,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:35:59,625 INFO L87 Difference]: Start difference. First operand 266 states and 351 transitions. Second operand 16 states. [2020-10-28 14:36:01,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:36:01,683 INFO L93 Difference]: Finished difference Result 545 states and 738 transitions. [2020-10-28 14:36:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 14:36:01,686 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-10-28 14:36:01,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:36:01,688 INFO L225 Difference]: With dead ends: 545 [2020-10-28 14:36:01,688 INFO L226 Difference]: Without dead ends: 312 [2020-10-28 14:36:01,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 14:36:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-28 14:36:01,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 304. [2020-10-28 14:36:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-28 14:36:01,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 409 transitions. [2020-10-28 14:36:01,728 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 409 transitions. Word has length 70 [2020-10-28 14:36:01,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:36:01,728 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 409 transitions. [2020-10-28 14:36:01,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:36:01,729 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 409 transitions. [2020-10-28 14:36:01,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 14:36:01,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:36:01,730 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:36:01,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 14:36:01,730 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:36:01,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:36:01,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1856117814, now seen corresponding path program 6 times [2020-10-28 14:36:01,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:36:01,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392607561] [2020-10-28 14:36:01,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:36:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:01,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:02,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:02,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:06,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:06,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 14:36:06,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:36:06,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 14:36:06,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:06,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:06,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 14:36:06,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:36:06,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 14:36:06,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:07,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:36:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:07,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:07,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:07,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:07,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:07,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:36:07,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:07,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:07,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:36:07,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:07,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:36:07,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:07,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:36:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:07,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:07,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:07,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:07,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:07,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:36:07,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:07,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:36:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:36:07,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:07,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:36:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:07,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:07,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:07,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:36:07,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:07,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:36:07,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:07,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:07,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:07,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:07,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:36:07,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:07,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:36:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:07,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:07,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:07,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:07,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:07,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:36:07,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:07,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:07,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:07,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:07,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:36:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:07,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:07,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:07,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:36:07,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:07,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:36:07,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:07,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:07,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:36:07,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:07,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:36:07,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:08,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 14:36:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:08,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:08,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:08,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:08,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:08,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:36:08,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:08,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:08,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 34 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:36:08,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392607561] [2020-10-28 14:36:08,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:36:08,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 14:36:08,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565659424] [2020-10-28 14:36:08,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 14:36:08,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:36:08,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 14:36:08,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=598, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:36:08,604 INFO L87 Difference]: Start difference. First operand 304 states and 409 transitions. Second operand 26 states. [2020-10-28 14:36:09,361 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-28 14:36:12,035 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-10-28 14:36:12,525 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-28 14:36:13,056 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2020-10-28 14:36:13,417 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2020-10-28 14:36:13,718 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2020-10-28 14:36:13,957 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2020-10-28 14:36:14,203 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-10-28 14:36:14,466 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2020-10-28 14:36:14,792 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-10-28 14:36:15,061 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2020-10-28 14:36:15,393 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2020-10-28 14:36:15,687 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-10-28 14:36:16,055 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-10-28 14:36:16,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:36:16,500 INFO L93 Difference]: Finished difference Result 656 states and 891 transitions. [2020-10-28 14:36:16,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 14:36:16,501 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 70 [2020-10-28 14:36:16,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:36:16,503 INFO L225 Difference]: With dead ends: 656 [2020-10-28 14:36:16,504 INFO L226 Difference]: Without dead ends: 387 [2020-10-28 14:36:16,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=368, Invalid=2824, Unknown=0, NotChecked=0, Total=3192 [2020-10-28 14:36:16,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-28 14:36:16,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 335. [2020-10-28 14:36:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-10-28 14:36:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 446 transitions. [2020-10-28 14:36:16,551 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 446 transitions. Word has length 70 [2020-10-28 14:36:16,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:36:16,551 INFO L481 AbstractCegarLoop]: Abstraction has 335 states and 446 transitions. [2020-10-28 14:36:16,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 14:36:16,552 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 446 transitions. [2020-10-28 14:36:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 14:36:16,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:36:16,553 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:36:16,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 14:36:16,553 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:36:16,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:36:16,554 INFO L82 PathProgramCache]: Analyzing trace with hash 874355479, now seen corresponding path program 3 times [2020-10-28 14:36:16,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:36:16,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189592179] [2020-10-28 14:36:16,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:36:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:16,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:16,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:16,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:16,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:21,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:21,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 14:36:21,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:36:21,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 14:36:21,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:21,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:21,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 14:36:21,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:36:21,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 14:36:21,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:21,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:36:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:21,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:21,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:21,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:21,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:21,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:36:21,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:21,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:21,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:36:21,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:21,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:36:21,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:21,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:36:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:21,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:21,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:21,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:21,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:36:21,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:21,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:21,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:36:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:21,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:21,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:21,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:36:21,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:21,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:36:21,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:21,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:36:21,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:21,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 14:36:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:21,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:21,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:22,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:22,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 14:36:22,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:36:22,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 14:36:22,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:22,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:36:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:36:22,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:22,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 14:36:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:22,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:22,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:22,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:22,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:22,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:36:22,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:22,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:22,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:22,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:22,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:22,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:22,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 14:36:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:22,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:22,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:22,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:36:22,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:22,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:36:22,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:22,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:22,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:22,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:22,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:36:22,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:22,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 14:36:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:22,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:22,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:22,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:22,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:22,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:36:22,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:22,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:22,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:22,259 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:36:22,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189592179] [2020-10-28 14:36:22,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:36:22,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:36:22,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210942041] [2020-10-28 14:36:22,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:36:22,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:36:22,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:36:22,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:36:22,260 INFO L87 Difference]: Start difference. First operand 335 states and 446 transitions. Second operand 16 states. [2020-10-28 14:36:23,279 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2020-10-28 14:36:23,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:36:23,961 INFO L93 Difference]: Finished difference Result 669 states and 906 transitions. [2020-10-28 14:36:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 14:36:23,962 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-10-28 14:36:23,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:36:23,964 INFO L225 Difference]: With dead ends: 669 [2020-10-28 14:36:23,965 INFO L226 Difference]: Without dead ends: 369 [2020-10-28 14:36:23,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:36:23,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-10-28 14:36:24,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 364. [2020-10-28 14:36:24,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-28 14:36:24,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 489 transitions. [2020-10-28 14:36:24,011 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 489 transitions. Word has length 71 [2020-10-28 14:36:24,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:36:24,011 INFO L481 AbstractCegarLoop]: Abstraction has 364 states and 489 transitions. [2020-10-28 14:36:24,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:36:24,012 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 489 transitions. [2020-10-28 14:36:24,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 14:36:24,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:36:24,013 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:36:24,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 14:36:24,013 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:36:24,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:36:24,014 INFO L82 PathProgramCache]: Analyzing trace with hash 756656770, now seen corresponding path program 3 times [2020-10-28 14:36:24,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:36:24,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590060453] [2020-10-28 14:36:24,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:36:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:24,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:25,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:27,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:27,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 14:36:27,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:36:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3180 [2020-10-28 14:36:27,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:27,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 14:36:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:36:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 14:36:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:27,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:36:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:27,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:27,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:27,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:27,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:27,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:36:27,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:27,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:27,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:36:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:36:27,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:27,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:36:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:27,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:27,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:27,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:27,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:27,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:36:27,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:27,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:36:27,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:27,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:36:27,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:27,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:36:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:27,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:27,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:27,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:36:27,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:27,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:36:27,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:27,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:36:27,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:27,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:36:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:27,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:27,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:27,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:27,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:27,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 14:36:27,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:27,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:27,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:27,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:36:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:27,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:27,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:27,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:36:27,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:27,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:36:27,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:27,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:27,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:36:27,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:27,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 14:36:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:27,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:27,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:27,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 14:36:27,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 14:36:27,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:27,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:36:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:36:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:28,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 14:36:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:28,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:28,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:28,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:28,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:28,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:36:28,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:28,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:28,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:28,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:28,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:28,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 14:36:28,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590060453] [2020-10-28 14:36:28,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:36:28,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 14:36:28,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66648433] [2020-10-28 14:36:28,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 14:36:28,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:36:28,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 14:36:28,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:36:28,339 INFO L87 Difference]: Start difference. First operand 364 states and 489 transitions. Second operand 20 states. [2020-10-28 14:36:28,778 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-28 14:36:31,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:36:31,863 INFO L93 Difference]: Finished difference Result 735 states and 1081 transitions. [2020-10-28 14:36:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 14:36:31,864 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 76 [2020-10-28 14:36:31,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:36:31,871 INFO L225 Difference]: With dead ends: 735 [2020-10-28 14:36:31,871 INFO L226 Difference]: Without dead ends: 731 [2020-10-28 14:36:31,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=187, Invalid=1295, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 14:36:31,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-10-28 14:36:31,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 695. [2020-10-28 14:36:31,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-28 14:36:31,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 986 transitions. [2020-10-28 14:36:31,959 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 986 transitions. Word has length 76 [2020-10-28 14:36:31,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:36:31,960 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 986 transitions. [2020-10-28 14:36:31,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 14:36:31,960 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 986 transitions. [2020-10-28 14:36:31,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 14:36:31,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:36:31,961 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:36:31,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 14:36:31,962 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:36:31,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:36:31,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1748515688, now seen corresponding path program 2 times [2020-10-28 14:36:31,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:36:31,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90044893] [2020-10-28 14:36:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:36:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:31,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:32,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:32,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:33,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:36,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:36,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 14:36:36,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:36:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 14:36:36,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:36,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:36:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 14:36:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:36:36,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:37,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:36:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:37,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:37,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:37,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:37,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:37,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:36:37,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:37,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:37,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:36:37,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:37,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:36:37,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:37,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:36:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:37,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:37,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:37,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:37,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:36:37,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:37,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:36:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:36:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:37,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:36:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:37,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:37,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:37,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:36:37,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:37,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:36:37,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:37,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:37,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:36:37,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:37,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:36:37,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:37,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:36:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:37,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:37,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:37,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:37,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:37,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:36:37,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:37,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:37,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:36:37,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:37,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:36:37,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:37,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:36:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:37,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:37,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:37,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:36:37,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:37,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:36:37,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:37,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:37,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:36:37,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:37,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:36:37,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:37,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 14:36:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:37,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:37,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:37,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:36:37,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:37,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:36:37,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:37,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:37,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:36:37,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:36:37,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:36:37,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:37,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 14:36:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:37,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:37,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:37,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:37,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:37,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 14:36:37,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:37,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:36:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:36:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:36:37,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-28 14:36:37,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90044893] [2020-10-28 14:36:37,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:36:37,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 14:36:37,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286341100] [2020-10-28 14:36:37,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:36:37,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:36:37,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:36:37,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:36:37,140 INFO L87 Difference]: Start difference. First operand 695 states and 986 transitions. Second operand 6 states. [2020-10-28 14:36:37,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:36:37,635 INFO L93 Difference]: Finished difference Result 1300 states and 1864 transitions. [2020-10-28 14:36:37,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:36:37,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-28 14:36:37,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:36:37,642 INFO L225 Difference]: With dead ends: 1300 [2020-10-28 14:36:37,642 INFO L226 Difference]: Without dead ends: 690 [2020-10-28 14:36:37,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:36:37,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-10-28 14:36:37,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2020-10-28 14:36:37,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-28 14:36:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 978 transitions. [2020-10-28 14:36:37,747 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 978 transitions. Word has length 77 [2020-10-28 14:36:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:36:37,747 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 978 transitions. [2020-10-28 14:36:37,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:36:37,748 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 978 transitions. [2020-10-28 14:36:37,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 14:36:37,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:36:37,750 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:36:37,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 14:36:37,750 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:36:37,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:36:37,750 INFO L82 PathProgramCache]: Analyzing trace with hash 930867238, now seen corresponding path program 1 times [2020-10-28 14:36:37,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:36:37,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148107381] [2020-10-28 14:36:37,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:36:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:37,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:38,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:39,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:42,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:42,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 14:36:42,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:36:42,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 14:36:42,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:42,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 14:36:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:36:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 14:36:42,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:43,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:36:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:43,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:43,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:43,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:43,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:43,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:36:43,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:43,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:43,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:36:43,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:43,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:36:43,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:43,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:36:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:43,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:43,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:43,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:43,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:43,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:36:43,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:43,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:43,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:43,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:43,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:43,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:43,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:36:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:43,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:43,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:43,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:36:43,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:43,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:36:43,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:43,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:36:43,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:43,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:36:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:43,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:43,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:43,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:43,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:36:43,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:43,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:36:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:36:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:43,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:36:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:43,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:43,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:43,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:36:43,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:43,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:36:43,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:43,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:36:43,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:43,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 14:36:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:43,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:43,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:43,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:36:43,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:43,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 14:36:43,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:43,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:43,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:36:43,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:43,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:36:43,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:43,577 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-10-28 14:36:43,740 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-28 14:36:44,023 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-10-28 14:36:44,252 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-28 14:36:44,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 14:36:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:44,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:44,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:44,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:44,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:44,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:36:44,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:44,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:44,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:44,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:44,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:36:44,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 14:36:44,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148107381] [2020-10-28 14:36:44,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:36:44,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 14:36:44,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858968603] [2020-10-28 14:36:44,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 14:36:44,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:36:44,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 14:36:44,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:36:44,290 INFO L87 Difference]: Start difference. First operand 690 states and 978 transitions. Second operand 23 states. [2020-10-28 14:36:47,426 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-10-28 14:36:47,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:36:47,624 INFO L93 Difference]: Finished difference Result 849 states and 1240 transitions. [2020-10-28 14:36:47,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 14:36:47,624 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 77 [2020-10-28 14:36:47,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:36:47,630 INFO L225 Difference]: With dead ends: 849 [2020-10-28 14:36:47,630 INFO L226 Difference]: Without dead ends: 845 [2020-10-28 14:36:47,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=234, Invalid=1658, Unknown=0, NotChecked=0, Total=1892 [2020-10-28 14:36:47,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-10-28 14:36:47,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 837. [2020-10-28 14:36:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-10-28 14:36:47,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1222 transitions. [2020-10-28 14:36:47,739 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1222 transitions. Word has length 77 [2020-10-28 14:36:47,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:36:47,740 INFO L481 AbstractCegarLoop]: Abstraction has 837 states and 1222 transitions. [2020-10-28 14:36:47,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 14:36:47,740 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1222 transitions. [2020-10-28 14:36:47,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 14:36:47,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:36:47,742 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:36:47,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 14:36:47,742 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:36:47,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:36:47,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1241948908, now seen corresponding path program 3 times [2020-10-28 14:36:47,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:36:47,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981406253] [2020-10-28 14:36:47,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:36:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:47,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:48,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:49,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:49,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:52,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:52,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 14:36:52,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:36:52,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 14:36:52,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:52,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 14:36:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:36:52,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 14:36:52,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:53,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:36:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:53,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:53,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:53,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:53,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:53,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:36:53,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:53,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:36:53,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:53,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:36:53,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:53,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:36:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:53,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:53,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:53,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:53,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:53,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:36:53,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:53,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:53,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:53,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:53,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:53,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:53,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:36:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:53,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:53,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:36:53,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:53,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:36:53,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:53,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:53,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:53,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:53,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:36:53,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:53,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:36:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:53,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:53,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:53,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:53,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:53,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:36:53,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:53,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:36:53,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:53,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:36:53,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:53,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:36:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:53,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:53,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:53,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:36:53,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:53,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:36:53,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:53,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:53,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:36:53,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:36:53,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:36:53,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:53,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 14:36:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:53,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:53,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:53,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:36:53,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:53,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 14:36:53,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:53,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:36:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:36:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:36:53,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:53,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 14:36:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:53,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:36:53,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:36:53,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:36:53,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 14:36:53,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:36:53,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:36:53,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:36:53,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:36:53,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:36:53,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:36:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 14:36:53,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981406253] [2020-10-28 14:36:53,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:36:53,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:36:53,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120186447] [2020-10-28 14:36:53,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:36:53,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:36:53,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:36:53,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:36:53,911 INFO L87 Difference]: Start difference. First operand 837 states and 1222 transitions. Second operand 16 states. [2020-10-28 14:36:54,423 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-10-28 14:36:54,997 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-28 14:36:56,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:36:56,275 INFO L93 Difference]: Finished difference Result 1613 states and 2378 transitions. [2020-10-28 14:36:56,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:36:56,278 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 77 [2020-10-28 14:36:56,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:36:56,285 INFO L225 Difference]: With dead ends: 1613 [2020-10-28 14:36:56,285 INFO L226 Difference]: Without dead ends: 861 [2020-10-28 14:36:56,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:36:56,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-10-28 14:36:56,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 855. [2020-10-28 14:36:56,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-10-28 14:36:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1266 transitions. [2020-10-28 14:36:56,404 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1266 transitions. Word has length 77 [2020-10-28 14:36:56,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:36:56,404 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1266 transitions. [2020-10-28 14:36:56,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:36:56,405 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1266 transitions. [2020-10-28 14:36:56,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 14:36:56,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:36:56,406 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:36:56,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 14:36:56,407 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:36:56,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:36:56,407 INFO L82 PathProgramCache]: Analyzing trace with hash -896366636, now seen corresponding path program 1 times [2020-10-28 14:36:56,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:36:56,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006459457] [2020-10-28 14:36:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:36:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:36:56,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:56,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:57,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:57,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:36:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:01,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:01,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 14:37:01,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:37:01,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 14:37:01,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:01,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:01,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:37:01,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:37:01,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 14:37:01,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:01,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:37:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:01,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:01,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:01,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:01,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:37:01,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:01,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:01,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:37:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:01,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:01,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:01,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:01,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:01,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:37:01,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:01,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:01,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:01,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:01,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:37:01,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:01,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:37:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:01,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:01,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:01,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:37:01,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:01,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:37:01,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:01,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:01,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:01,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:01,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:37:01,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:01,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:37:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:01,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:01,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:01,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:01,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:01,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:37:01,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:01,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:37:01,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:01,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:37:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:01,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:01,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:01,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:37:01,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:01,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:37:01,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:01,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:37:01,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:01,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 14:37:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:01,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:01,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:01,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:37:01,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:01,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 14:37:01,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:01,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:37:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:37:01,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:01,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 14:37:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:01,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:01,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:01,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:01,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:01,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:37:01,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:01,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:01,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:01,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:37:01,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:01,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:01,839 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-28 14:37:01,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006459457] [2020-10-28 14:37:01,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:37:01,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:37:01,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129742742] [2020-10-28 14:37:01,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:37:01,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:37:01,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:37:01,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:37:01,841 INFO L87 Difference]: Start difference. First operand 855 states and 1266 transitions. Second operand 12 states. [2020-10-28 14:37:03,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:37:03,142 INFO L93 Difference]: Finished difference Result 1628 states and 2427 transitions. [2020-10-28 14:37:03,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:37:03,143 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-10-28 14:37:03,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:37:03,149 INFO L225 Difference]: With dead ends: 1628 [2020-10-28 14:37:03,149 INFO L226 Difference]: Without dead ends: 868 [2020-10-28 14:37:03,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:37:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2020-10-28 14:37:03,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 854. [2020-10-28 14:37:03,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 854 states. [2020-10-28 14:37:03,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1264 transitions. [2020-10-28 14:37:03,264 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1264 transitions. Word has length 78 [2020-10-28 14:37:03,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:37:03,265 INFO L481 AbstractCegarLoop]: Abstraction has 854 states and 1264 transitions. [2020-10-28 14:37:03,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:37:03,265 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1264 transitions. [2020-10-28 14:37:03,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 14:37:03,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:37:03,267 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:37:03,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 14:37:03,267 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:37:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:37:03,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1816965893, now seen corresponding path program 4 times [2020-10-28 14:37:03,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:37:03,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825345277] [2020-10-28 14:37:03,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:37:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:03,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:04,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:04,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:08,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:08,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 14:37:08,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:37:08,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 14:37:08,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:08,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 14:37:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:37:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 14:37:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:08,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:37:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:08,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:08,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:08,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:08,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:08,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:37:08,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:08,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:08,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:08,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:08,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:08,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:08,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:37:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:08,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:08,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:08,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:08,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:08,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:37:08,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:08,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:37:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:37:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:08,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:37:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:08,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:08,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:37:08,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:08,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:37:08,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:08,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:08,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:08,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:08,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:37:08,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:09,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:37:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:09,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:09,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:09,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:09,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:09,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:37:09,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:09,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:09,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:09,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:09,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:37:09,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:09,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:37:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:09,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:09,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:09,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:37:09,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:09,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:37:09,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:09,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:37:09,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:37:09,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 14:37:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:09,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:09,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:09,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 14:37:09,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:09,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 14:37:09,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:09,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:37:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:37:09,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:09,745 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2020-10-28 14:37:09,942 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-28 14:37:10,374 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-10-28 14:37:10,556 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-28 14:37:10,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 14:37:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:10,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:10,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:10,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:10,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:10,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:37:10,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:10,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:37:10,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:37:10,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825345277] [2020-10-28 14:37:10,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:37:10,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 14:37:10,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968042654] [2020-10-28 14:37:10,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 14:37:10,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:37:10,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 14:37:10,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2020-10-28 14:37:10,606 INFO L87 Difference]: Start difference. First operand 854 states and 1264 transitions. Second operand 27 states. [2020-10-28 14:37:11,191 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-28 14:37:12,559 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2020-10-28 14:37:14,866 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-28 14:37:16,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:37:16,083 INFO L93 Difference]: Finished difference Result 975 states and 1455 transitions. [2020-10-28 14:37:16,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 14:37:16,084 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 79 [2020-10-28 14:37:16,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:37:16,092 INFO L225 Difference]: With dead ends: 975 [2020-10-28 14:37:16,093 INFO L226 Difference]: Without dead ends: 971 [2020-10-28 14:37:16,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=347, Invalid=2845, Unknown=0, NotChecked=0, Total=3192 [2020-10-28 14:37:16,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-10-28 14:37:16,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 954. [2020-10-28 14:37:16,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 954 states. [2020-10-28 14:37:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1430 transitions. [2020-10-28 14:37:16,256 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1430 transitions. Word has length 79 [2020-10-28 14:37:16,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:37:16,257 INFO L481 AbstractCegarLoop]: Abstraction has 954 states and 1430 transitions. [2020-10-28 14:37:16,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 14:37:16,257 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1430 transitions. [2020-10-28 14:37:16,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 14:37:16,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:37:16,259 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:37:16,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 14:37:16,261 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:37:16,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:37:16,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1365740254, now seen corresponding path program 5 times [2020-10-28 14:37:16,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:37:16,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349010523] [2020-10-28 14:37:16,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:37:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:16,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:16,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:17,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:21,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:21,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:21,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 14:37:21,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:37:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 14:37:21,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:21,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 14:37:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:37:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 14:37:21,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:21,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:37:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:21,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:21,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:21,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:21,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:21,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:37:21,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:21,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:21,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:21,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:21,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:21,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:21,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:37:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:21,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:21,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:21,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:21,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:21,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:37:21,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:21,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:37:21,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:21,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:37:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:21,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:21,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:21,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:37:21,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:21,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:37:21,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:21,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:21,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:21,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:37:21,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:21,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:37:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:21,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:21,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:21,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:21,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:21,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:37:21,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:21,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:21,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:21,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:37:21,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:22,014 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-28 14:37:22,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:37:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:22,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:22,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:22,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:37:22,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:22,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:37:22,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:22,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:22,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:22,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:22,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:37:22,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:22,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 14:37:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:22,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:22,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:22,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:37:22,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:22,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 14:37:22,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:22,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:37:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:37:22,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:22,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 14:37:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:22,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:22,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:22,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:22,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:22,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 14:37:22,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:22,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:22,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:22,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:37:22,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:22,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 14:37:22,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349010523] [2020-10-28 14:37:22,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:37:22,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 14:37:22,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184531088] [2020-10-28 14:37:22,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 14:37:22,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:37:22,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 14:37:22,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:37:22,639 INFO L87 Difference]: Start difference. First operand 954 states and 1430 transitions. Second operand 17 states. [2020-10-28 14:37:23,077 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-28 14:37:25,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:37:25,087 INFO L93 Difference]: Finished difference Result 1821 states and 2733 transitions. [2020-10-28 14:37:25,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:37:25,089 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 79 [2020-10-28 14:37:25,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:37:25,096 INFO L225 Difference]: With dead ends: 1821 [2020-10-28 14:37:25,097 INFO L226 Difference]: Without dead ends: 962 [2020-10-28 14:37:25,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:37:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2020-10-28 14:37:25,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 947. [2020-10-28 14:37:25,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2020-10-28 14:37:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1401 transitions. [2020-10-28 14:37:25,222 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1401 transitions. Word has length 79 [2020-10-28 14:37:25,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:37:25,223 INFO L481 AbstractCegarLoop]: Abstraction has 947 states and 1401 transitions. [2020-10-28 14:37:25,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 14:37:25,223 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1401 transitions. [2020-10-28 14:37:25,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 14:37:25,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:37:25,225 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:37:25,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 14:37:25,226 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:37:25,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:37:25,226 INFO L82 PathProgramCache]: Analyzing trace with hash -973327983, now seen corresponding path program 4 times [2020-10-28 14:37:25,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:37:25,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94036210] [2020-10-28 14:37:25,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:37:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:25,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:25,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:25,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:25,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:25,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:30,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:30,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 14:37:30,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:37:30,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 14:37:30,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:30,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:30,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:37:30,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:37:30,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 14:37:30,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:30,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:37:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:30,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:30,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:30,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:30,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:37:30,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:30,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:30,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:30,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:30,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:30,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:30,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:37:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:30,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:30,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:30,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:30,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:30,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:37:30,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:30,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:37:30,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:30,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:37:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:30,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:30,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:30,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:37:30,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:30,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:37:30,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:30,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:30,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:30,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:37:30,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:30,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 14:37:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:30,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:30,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 14:37:30,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:30,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:37:30,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:30,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:37:30,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:30,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 14:37:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:30,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:30,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:30,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:30,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:30,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:37:30,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:30,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:30,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:30,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:30,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:37:30,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:30,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 14:37:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:30,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:30,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:30,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:37:30,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:30,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:37:30,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:30,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:37:30,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:30,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 14:37:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:30,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:30,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:30,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:37:30,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:30,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:37:30,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:30,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 14:37:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:30,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:30,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 14:37:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:30,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:30,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:30,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:30,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:30,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:37:30,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:30,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:30,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:30,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:37:30,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:30,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 14:37:30,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94036210] [2020-10-28 14:37:30,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:37:30,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 14:37:30,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684782887] [2020-10-28 14:37:30,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:37:30,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:37:30,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:37:30,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:37:30,387 INFO L87 Difference]: Start difference. First operand 947 states and 1401 transitions. Second operand 6 states. [2020-10-28 14:37:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:37:30,825 INFO L93 Difference]: Finished difference Result 1860 states and 2787 transitions. [2020-10-28 14:37:30,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:37:30,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-28 14:37:30,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:37:30,835 INFO L225 Difference]: With dead ends: 1860 [2020-10-28 14:37:30,836 INFO L226 Difference]: Without dead ends: 1239 [2020-10-28 14:37:30,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:37:30,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-10-28 14:37:30,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1229. [2020-10-28 14:37:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2020-10-28 14:37:30,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1815 transitions. [2020-10-28 14:37:31,000 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1815 transitions. Word has length 80 [2020-10-28 14:37:31,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:37:31,001 INFO L481 AbstractCegarLoop]: Abstraction has 1229 states and 1815 transitions. [2020-10-28 14:37:31,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:37:31,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1815 transitions. [2020-10-28 14:37:31,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 14:37:31,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:37:31,003 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:37:31,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 14:37:31,003 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:37:31,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:37:31,004 INFO L82 PathProgramCache]: Analyzing trace with hash -894442783, now seen corresponding path program 2 times [2020-10-28 14:37:31,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:37:31,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107978296] [2020-10-28 14:37:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:37:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:31,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:31,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:36,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:36,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 14:37:36,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:37:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 14:37:36,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:36,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 14:37:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:37:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 14:37:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:36,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:37:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:36,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:36,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:36,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:36,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:36,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:37:36,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:36,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:36,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:36,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:37:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:36,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:36,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:36,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:36,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:36,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:37:36,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:36,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:37:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:37:36,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:36,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:37:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:36,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:36,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:36,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:37:36,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:36,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:37:36,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:36,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:36,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:36,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:36,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:37:36,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:36,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:37:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:36,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:36,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:36,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:36,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:37:36,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:36,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:37:36,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:36,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:37:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:36,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:36,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:36,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:37:36,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:36,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:37:36,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:36,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:37:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:37:36,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:37,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 14:37:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:37,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:37,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:37,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:37:37,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:37,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 14:37:37,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:37,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:37,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:37:37,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:37,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:37:37,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:37,588 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-10-28 14:37:37,818 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-28 14:37:37,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 14:37:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:37,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:37,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:37,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:37,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:37,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:37:37,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:37,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:37:37,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 39 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:37:37,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107978296] [2020-10-28 14:37:37,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:37:37,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 14:37:37,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936111048] [2020-10-28 14:37:37,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 14:37:37,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:37:37,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 14:37:37,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=596, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:37:37,983 INFO L87 Difference]: Start difference. First operand 1229 states and 1815 transitions. Second operand 26 states. [2020-10-28 14:37:40,294 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-28 14:37:41,645 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-28 14:37:43,708 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-10-28 14:37:44,011 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-10-28 14:37:44,276 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-28 14:37:44,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:37:44,785 INFO L93 Difference]: Finished difference Result 2579 states and 3849 transitions. [2020-10-28 14:37:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 14:37:44,786 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 80 [2020-10-28 14:37:44,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:37:44,797 INFO L225 Difference]: With dead ends: 2579 [2020-10-28 14:37:44,797 INFO L226 Difference]: Without dead ends: 1423 [2020-10-28 14:37:44,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=319, Invalid=2987, Unknown=0, NotChecked=0, Total=3306 [2020-10-28 14:37:44,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2020-10-28 14:37:44,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1356. [2020-10-28 14:37:44,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1356 states. [2020-10-28 14:37:44,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 2007 transitions. [2020-10-28 14:37:44,960 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 2007 transitions. Word has length 80 [2020-10-28 14:37:44,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:37:44,960 INFO L481 AbstractCegarLoop]: Abstraction has 1356 states and 2007 transitions. [2020-10-28 14:37:44,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 14:37:44,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 2007 transitions. [2020-10-28 14:37:44,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 14:37:44,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:37:44,962 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:37:44,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 14:37:44,963 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:37:44,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:37:44,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1587106, now seen corresponding path program 6 times [2020-10-28 14:37:44,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:37:44,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31680577] [2020-10-28 14:37:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:37:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:45,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:45,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:46,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:46,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:50,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:50,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 14:37:50,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:37:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 14:37:50,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:50,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 14:37:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:37:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 14:37:50,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:50,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:37:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:50,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:50,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:50,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:50,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:50,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:37:50,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:50,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:50,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:37:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:50,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:50,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:50,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:50,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:50,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:37:50,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:50,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:37:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:37:50,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 14:37:50,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:37:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:50,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:50,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:50,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:37:50,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:50,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:37:50,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:50,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:37:50,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:50,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:37:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:50,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:50,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:50,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:50,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:37:50,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:50,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:37:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:37:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:51,069 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-28 14:37:51,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:37:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:51,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:51,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:51,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:37:51,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:37:51,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:51,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:37:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:51,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 14:37:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:51,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:51,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:51,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 14:37:51,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:51,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 14:37:51,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:51,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:37:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:37:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:37:51,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:51,559 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-28 14:37:52,128 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-28 14:37:52,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 14:37:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:52,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:52,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:52,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:52,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:52,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:37:52,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:52,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:37:52,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:37:52,187 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 51 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:37:52,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31680577] [2020-10-28 14:37:52,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:37:52,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 14:37:52,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147651638] [2020-10-28 14:37:52,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 14:37:52,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:37:52,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 14:37:52,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:37:52,188 INFO L87 Difference]: Start difference. First operand 1356 states and 2007 transitions. Second operand 26 states. [2020-10-28 14:37:52,832 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 14:37:55,104 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-28 14:37:55,805 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-28 14:37:56,058 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-28 14:37:56,256 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-28 14:37:56,455 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-10-28 14:37:56,754 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-10-28 14:37:58,339 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-28 14:37:58,639 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-28 14:37:59,220 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-10-28 14:37:59,423 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2020-10-28 14:38:00,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:00,311 INFO L93 Difference]: Finished difference Result 3283 states and 4937 transitions. [2020-10-28 14:38:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-28 14:38:00,312 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 82 [2020-10-28 14:38:00,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:00,326 INFO L225 Difference]: With dead ends: 3283 [2020-10-28 14:38:00,326 INFO L226 Difference]: Without dead ends: 2000 [2020-10-28 14:38:00,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=452, Invalid=3330, Unknown=0, NotChecked=0, Total=3782 [2020-10-28 14:38:00,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2020-10-28 14:38:00,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1961. [2020-10-28 14:38:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-10-28 14:38:00,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2944 transitions. [2020-10-28 14:38:00,554 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2944 transitions. Word has length 82 [2020-10-28 14:38:00,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:00,555 INFO L481 AbstractCegarLoop]: Abstraction has 1961 states and 2944 transitions. [2020-10-28 14:38:00,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 14:38:00,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2944 transitions. [2020-10-28 14:38:00,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 14:38:00,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:00,559 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-28 14:38:00,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 14:38:00,559 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:00,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:00,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1285964642, now seen corresponding path program 7 times [2020-10-28 14:38:00,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:00,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489607457] [2020-10-28 14:38:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:00,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:00,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:00,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:02,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:05,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:05,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 14:38:05,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:38:05,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 14:38:05,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:05,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:38:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:38:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 14:38:05,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:05,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:05,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:05,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:05,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:05,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:05,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:38:05,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:05,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:05,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:05,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 14:38:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:05,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:05,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:05,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:05,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:05,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:38:05,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:05,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:38:05,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:05,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:38:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:05,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:05,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:05,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:38:05,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:05,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:38:05,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:05,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:38:05,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:05,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:38:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:05,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:05,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:05,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:05,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:05,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:38:05,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:05,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:38:05,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:05,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:38:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:05,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:05,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:38:05,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:05,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:38:05,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:05,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:38:05,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:05,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 14:38:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:05,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:05,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:05,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 14:38:05,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:05,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:38:05,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:05,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:05,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:05,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:05,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:38:05,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:05,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 14:38:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:05,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:05,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:05,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:05,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:05,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:38:05,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:05,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:05,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:05,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:05,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:38:05,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:05,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 14:38:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:05,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:05,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:05,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:38:05,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:05,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:38:05,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:05,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:05,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:38:05,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:05,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:38:05,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:06,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 14:38:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:06,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:06,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:06,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:06,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:38:06,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:06,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:38:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:38:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:38:06,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 52 proven. 11 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-28 14:38:06,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489607457] [2020-10-28 14:38:06,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:38:06,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:38:06,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742629762] [2020-10-28 14:38:06,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:38:06,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:06,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:38:06,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:38:06,145 INFO L87 Difference]: Start difference. First operand 1961 states and 2944 transitions. Second operand 16 states. [2020-10-28 14:38:07,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:07,969 INFO L93 Difference]: Finished difference Result 3884 states and 5827 transitions. [2020-10-28 14:38:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 14:38:07,970 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 94 [2020-10-28 14:38:07,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:07,985 INFO L225 Difference]: With dead ends: 3884 [2020-10-28 14:38:07,985 INFO L226 Difference]: Without dead ends: 1996 [2020-10-28 14:38:07,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2020-10-28 14:38:07,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2020-10-28 14:38:08,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1959. [2020-10-28 14:38:08,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2020-10-28 14:38:08,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2916 transitions. [2020-10-28 14:38:08,219 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2916 transitions. Word has length 94 [2020-10-28 14:38:08,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:08,219 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 2916 transitions. [2020-10-28 14:38:08,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:38:08,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2916 transitions. [2020-10-28 14:38:08,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 14:38:08,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:08,222 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-28 14:38:08,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 14:38:08,223 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:08,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:08,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1866719120, now seen corresponding path program 5 times [2020-10-28 14:38:08,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:08,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698578160] [2020-10-28 14:38:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:08,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:08,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking...