/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/running_example.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:34:43,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:34:43,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:34:43,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:34:43,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:34:43,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:34:43,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:34:43,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:34:43,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:34:43,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:34:43,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:34:43,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:34:43,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:34:43,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:34:43,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:34:43,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:34:43,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:34:43,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:34:43,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:34:43,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:34:43,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:34:43,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:34:43,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:34:43,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:34:43,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:34:43,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:34:43,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:34:43,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:34:43,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:34:43,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:34:43,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:34:43,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:34:43,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:34:43,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:34:43,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:34:43,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:34:43,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:34:43,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:34:43,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:34:43,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:34:43,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:34:43,493 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 14:34:43,522 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:34:43,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:34:43,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:34:43,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:34:43,525 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:34:43,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:34:43,525 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:34:43,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:34:43,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:34:43,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:34:43,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:34:43,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:34:43,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:34:43,527 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:34:43,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:34:43,528 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:34:43,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:34:43,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:34:43,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:34:43,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:34:43,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:34:43,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:34:43,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:34:43,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:34:43,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:34:43,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:34:43,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:34:43,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:34:43,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:34:43,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:34:43,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:34:43,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:34:43,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:34:43,971 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:34:43,972 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:34:43,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/running_example.i [2020-10-28 14:34:44,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20777f5f8/385439148a744c799a26b810477f2109/FLAG8fc18ed6d [2020-10-28 14:34:44,725 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:34:44,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/running_example.i [2020-10-28 14:34:44,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20777f5f8/385439148a744c799a26b810477f2109/FLAG8fc18ed6d [2020-10-28 14:34:45,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20777f5f8/385439148a744c799a26b810477f2109 [2020-10-28 14:34:45,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:34:45,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:34:45,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:34:45,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:34:45,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:34:45,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:34:45" (1/1) ... [2020-10-28 14:34:45,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5625a062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:45, skipping insertion in model container [2020-10-28 14:34:45,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:34:45" (1/1) ... [2020-10-28 14:34:45,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:34:45,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:34:45,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:34:45,475 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:34:45,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:34:45,590 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:34:45,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:45 WrapperNode [2020-10-28 14:34:45,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:34:45,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:34:45,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:34:45,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:34:45,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:45" (1/1) ... [2020-10-28 14:34:45,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:45" (1/1) ... [2020-10-28 14:34:45,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:45" (1/1) ... [2020-10-28 14:34:45,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:45" (1/1) ... [2020-10-28 14:34:45,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:45" (1/1) ... [2020-10-28 14:34:45,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:45" (1/1) ... [2020-10-28 14:34:45,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:45" (1/1) ... [2020-10-28 14:34:45,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:34:45,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:34:45,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:34:45,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:34:45,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:45" (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 14:34:45,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:34:45,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:34:45,741 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:34:45,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:34:45,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:34:45,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:34:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:34:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:34:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:34:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:34:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:34:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:34:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:34:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:34:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:34:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:34:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:34:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:34:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:34:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:34:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:34:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:34:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:34:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:34:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:34:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:34:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:34:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:34:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:34:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:34:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:34:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:34:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:34:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:34:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:34:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:34:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:34:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:34:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:34:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:34:45,763 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:34:45,763 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:34:45,763 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:34:45,763 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:34:45,763 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:34:45,763 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:34:45,764 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:34:45,764 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:34:45,764 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:34:45,764 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:34:45,764 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:34:45,764 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:34:45,764 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:34:45,765 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:34:45,765 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:34:45,765 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:34:45,765 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:34:45,765 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:34:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:34:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:34:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:34:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:34:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:34:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:34:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:34:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:34:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:34:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:34:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:34:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:34:45,768 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:34:45,768 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:34:45,768 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:34:45,768 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:34:45,768 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:34:45,768 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:34:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:34:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:34:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:34:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:34:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:34:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:34:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:34:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:34:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:34:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:34:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:34:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:34:45,771 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:34:45,771 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:34:45,771 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:34:45,771 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:34:45,771 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:34:45,771 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:34:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:34:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:34:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:34:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:34:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:34:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:34:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:34:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:34:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:34:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:34:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:34:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:34:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:34:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:34:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:34:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:34:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:34:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:34:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:34:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:34:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:34:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:34:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:34:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:34:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:34:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:34:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:34:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:34:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:34:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:34:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:34:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:34:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:34:46,311 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:34:46,311 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 14:34:46,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:34:46 BoogieIcfgContainer [2020-10-28 14:34:46,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:34:46,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:34:46,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:34:46,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:34:46,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:34:45" (1/3) ... [2020-10-28 14:34:46,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bb39f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:34:46, skipping insertion in model container [2020-10-28 14:34:46,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:34:45" (2/3) ... [2020-10-28 14:34:46,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bb39f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:34:46, skipping insertion in model container [2020-10-28 14:34:46,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:34:46" (3/3) ... [2020-10-28 14:34:46,323 INFO L111 eAbstractionObserver]: Analyzing ICFG running_example.i [2020-10-28 14:34:46,336 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:34:46,341 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:34:46,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:34:46,384 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:34:46,384 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:34:46,384 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:34:46,384 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:34:46,385 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:34:46,385 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:34:46,385 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:34:46,386 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:34:46,403 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-28 14:34:46,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-28 14:34:46,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:46,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:46,411 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:46,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:46,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1042609471, now seen corresponding path program 1 times [2020-10-28 14:34:46,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:46,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733164557] [2020-10-28 14:34:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:46,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:46,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:47,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:47,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:34:47,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:34:47,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-28 14:34:47,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:47,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:47,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:47,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:34:47,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:47,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 14:34:47,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:47,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:47,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:47,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:47,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:47,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:34:47,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:47,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:47,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:47,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:47,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:47,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:47,332 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 14:34:47,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733164557] [2020-10-28 14:34:47,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:34:47,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:34:47,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492531218] [2020-10-28 14:34:47,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 14:34:47,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:47,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 14:34:47,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:34:47,365 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-10-28 14:34:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:47,462 INFO L93 Difference]: Finished difference Result 38 states and 57 transitions. [2020-10-28 14:34:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:34:47,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-28 14:34:47,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:47,473 INFO L225 Difference]: With dead ends: 38 [2020-10-28 14:34:47,473 INFO L226 Difference]: Without dead ends: 21 [2020-10-28 14:34:47,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:34:47,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-28 14:34:47,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-28 14:34:47,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-28 14:34:47,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2020-10-28 14:34:47,521 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 14 [2020-10-28 14:34:47,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:47,521 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2020-10-28 14:34:47,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 14:34:47,522 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2020-10-28 14:34:47,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 14:34:47,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:47,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:47,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:34:47,523 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:47,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:47,524 INFO L82 PathProgramCache]: Analyzing trace with hash -743835575, now seen corresponding path program 1 times [2020-10-28 14:34:47,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:47,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505102760] [2020-10-28 14:34:47,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:47,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:47,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:47,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 14:34:47,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:47,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 14:34:47,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:47,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:47,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:34:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:34:47,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:47,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:47,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:47,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:47,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:47,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:47,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:34:47,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:47,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:47,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:47,824 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 14:34:47,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505102760] [2020-10-28 14:34:47,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:34:47,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:34:47,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767079336] [2020-10-28 14:34:47,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:34:47,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:47,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:34:47,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:34:47,829 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand 6 states. [2020-10-28 14:34:47,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:47,982 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2020-10-28 14:34:47,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:34:47,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-28 14:34:47,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:47,986 INFO L225 Difference]: With dead ends: 43 [2020-10-28 14:34:47,986 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 14:34:47,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:34:47,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 14:34:47,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-28 14:34:47,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 14:34:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2020-10-28 14:34:47,997 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 16 [2020-10-28 14:34:47,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:47,997 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2020-10-28 14:34:47,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:34:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2020-10-28 14:34:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 14:34:47,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:47,998 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:47,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:34:47,999 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:47,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:47,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1824486671, now seen corresponding path program 1 times [2020-10-28 14:34:48,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:48,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789926239] [2020-10-28 14:34:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:48,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:48,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:48,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 14:34:48,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:48,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-28 14:34:48,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:48,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:34:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:34:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:48,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:48,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:48,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:48,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:48,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:48,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:34:48,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:48,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:48,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:48,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:48,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:48,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:48,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789926239] [2020-10-28 14:34:48,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:48,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:34:48,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008759783] [2020-10-28 14:34:48,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:34:48,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:48,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:34:48,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:34:48,538 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand 7 states. [2020-10-28 14:34:48,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:48,801 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2020-10-28 14:34:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:34:48,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-28 14:34:48,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:48,803 INFO L225 Difference]: With dead ends: 54 [2020-10-28 14:34:48,803 INFO L226 Difference]: Without dead ends: 43 [2020-10-28 14:34:48,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:34:48,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-28 14:34:48,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2020-10-28 14:34:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 14:34:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2020-10-28 14:34:48,822 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 20 [2020-10-28 14:34:48,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:48,823 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2020-10-28 14:34:48,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:34:48,824 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2020-10-28 14:34:48,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:34:48,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:48,826 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:48,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:34:48,828 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:48,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:48,829 INFO L82 PathProgramCache]: Analyzing trace with hash -940007470, now seen corresponding path program 1 times [2020-10-28 14:34:48,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:48,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724891398] [2020-10-28 14:34:48,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:48,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:49,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:49,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 14:34:49,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:49,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 14:34:49,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:49,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:49,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:34:49,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:49,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:34:49,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:49,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:49,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:49,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:49,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:49,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:49,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:34:49,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:49,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:49,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:49,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:49,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:49,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:49,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724891398] [2020-10-28 14:34:49,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:49,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 14:34:49,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065822125] [2020-10-28 14:34:49,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:34:49,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:49,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:34:49,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:34:49,187 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand 6 states. [2020-10-28 14:34:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:49,416 INFO L93 Difference]: Finished difference Result 61 states and 80 transitions. [2020-10-28 14:34:49,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:34:49,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-28 14:34:49,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:49,418 INFO L225 Difference]: With dead ends: 61 [2020-10-28 14:34:49,419 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 14:34:49,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:34:49,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 14:34:49,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-10-28 14:34:49,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 14:34:49,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2020-10-28 14:34:49,431 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 22 [2020-10-28 14:34:49,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:49,431 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2020-10-28 14:34:49,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:34:49,431 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2020-10-28 14:34:49,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:34:49,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:49,433 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:49,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:34:49,433 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:49,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:49,434 INFO L82 PathProgramCache]: Analyzing trace with hash -2051974996, now seen corresponding path program 1 times [2020-10-28 14:34:49,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:49,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616933717] [2020-10-28 14:34:49,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:49,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:49,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:49,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:49,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:34:49,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:34:49,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-10-28 14:34:49,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:49,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:49,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:34:49,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:49,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:34:49,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:50,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:50,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:50,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:50,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:50,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:50,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:34:50,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:50,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:50,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:50,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:50,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:50,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:50,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616933717] [2020-10-28 14:34:50,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:50,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:34:50,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388114639] [2020-10-28 14:34:50,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:34:50,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:50,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:34:50,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:34:50,066 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 7 states. [2020-10-28 14:34:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:50,345 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2020-10-28 14:34:50,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:34:50,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-28 14:34:50,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:50,348 INFO L225 Difference]: With dead ends: 65 [2020-10-28 14:34:50,348 INFO L226 Difference]: Without dead ends: 61 [2020-10-28 14:34:50,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:34:50,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-28 14:34:50,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2020-10-28 14:34:50,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 14:34:50,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 72 transitions. [2020-10-28 14:34:50,369 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 72 transitions. Word has length 24 [2020-10-28 14:34:50,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:50,370 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 72 transitions. [2020-10-28 14:34:50,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:34:50,371 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 72 transitions. [2020-10-28 14:34:50,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:34:50,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:50,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:50,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:34:50,374 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:50,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:50,375 INFO L82 PathProgramCache]: Analyzing trace with hash -2050127954, now seen corresponding path program 1 times [2020-10-28 14:34:50,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:50,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208979628] [2020-10-28 14:34:50,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:50,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:50,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:51,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:51,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:34:51,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:34:51,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 725 [2020-10-28 14:34:51,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:51,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:34:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:34:51,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:51,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:51,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:51,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:51,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:51,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:34:51,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:51,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:51,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:51,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:51,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:51,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:51,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208979628] [2020-10-28 14:34:51,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:51,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:34:51,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505789167] [2020-10-28 14:34:51,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:34:51,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:51,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:34:51,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:34:51,221 INFO L87 Difference]: Start difference. First operand 53 states and 72 transitions. Second operand 7 states. [2020-10-28 14:34:51,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:51,410 INFO L93 Difference]: Finished difference Result 97 states and 131 transitions. [2020-10-28 14:34:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:34:51,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-28 14:34:51,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:51,412 INFO L225 Difference]: With dead ends: 97 [2020-10-28 14:34:51,412 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 14:34:51,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:34:51,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 14:34:51,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-10-28 14:34:51,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-28 14:34:51,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 97 transitions. [2020-10-28 14:34:51,424 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 97 transitions. Word has length 24 [2020-10-28 14:34:51,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:51,424 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 97 transitions. [2020-10-28 14:34:51,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:34:51,425 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 97 transitions. [2020-10-28 14:34:51,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:34:51,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:51,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:51,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:34:51,426 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:51,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:51,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1849965290, now seen corresponding path program 1 times [2020-10-28 14:34:51,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:51,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096023974] [2020-10-28 14:34:51,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:51,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:51,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:51,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:51,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:34:51,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:34:51,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-28 14:34:51,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:51,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:34:51,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:52,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:52,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:52,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:52,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:52,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:52,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:34:52,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:52,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:52,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:52,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096023974] [2020-10-28 14:34:52,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:52,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:34:52,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774490568] [2020-10-28 14:34:52,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:34:52,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:52,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:34:52,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:34:52,146 INFO L87 Difference]: Start difference. First operand 72 states and 97 transitions. Second operand 8 states. [2020-10-28 14:34:52,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:52,485 INFO L93 Difference]: Finished difference Result 101 states and 133 transitions. [2020-10-28 14:34:52,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:34:52,486 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-28 14:34:52,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:52,487 INFO L225 Difference]: With dead ends: 101 [2020-10-28 14:34:52,487 INFO L226 Difference]: Without dead ends: 97 [2020-10-28 14:34:52,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:34:52,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-28 14:34:52,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 80. [2020-10-28 14:34:52,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-28 14:34:52,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 107 transitions. [2020-10-28 14:34:52,499 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 107 transitions. Word has length 24 [2020-10-28 14:34:52,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:52,499 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 107 transitions. [2020-10-28 14:34:52,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:34:52,500 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 107 transitions. [2020-10-28 14:34:52,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:34:52,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:52,501 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:52,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:34:52,501 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:52,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:52,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1369251541, now seen corresponding path program 2 times [2020-10-28 14:34:52,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:52,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523331015] [2020-10-28 14:34:52,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:52,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:52,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:52,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:34:52,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:52,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-28 14:34:52,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:52,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:34:52,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:52,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:52,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:52,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:52,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:52,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:52,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:34:52,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:52,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:52,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523331015] [2020-10-28 14:34:52,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:52,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:34:52,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91050331] [2020-10-28 14:34:52,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:34:52,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:52,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:34:52,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:34:52,865 INFO L87 Difference]: Start difference. First operand 80 states and 107 transitions. Second operand 8 states. [2020-10-28 14:34:53,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:53,177 INFO L93 Difference]: Finished difference Result 120 states and 162 transitions. [2020-10-28 14:34:53,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:34:53,178 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-28 14:34:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:53,179 INFO L225 Difference]: With dead ends: 120 [2020-10-28 14:34:53,180 INFO L226 Difference]: Without dead ends: 116 [2020-10-28 14:34:53,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:34:53,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-28 14:34:53,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 93. [2020-10-28 14:34:53,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 14:34:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 128 transitions. [2020-10-28 14:34:53,192 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 128 transitions. Word has length 24 [2020-10-28 14:34:53,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:53,193 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 128 transitions. [2020-10-28 14:34:53,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:34:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 128 transitions. [2020-10-28 14:34:53,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:34:53,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:53,196 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:53,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:34:53,196 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:53,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:53,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1371098583, now seen corresponding path program 1 times [2020-10-28 14:34:53,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:53,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414774758] [2020-10-28 14:34:53,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:53,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:53,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:53,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:53,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:34:53,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:34:53,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-28 14:34:53,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:53,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:34:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:34:53,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:53,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:53,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:53,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:53,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:53,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:53,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:53,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:53,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:53,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:53,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414774758] [2020-10-28 14:34:53,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:53,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:34:53,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398535969] [2020-10-28 14:34:53,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:34:53,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:53,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:34:53,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:34:53,605 INFO L87 Difference]: Start difference. First operand 93 states and 128 transitions. Second operand 8 states. [2020-10-28 14:34:53,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:53,903 INFO L93 Difference]: Finished difference Result 151 states and 211 transitions. [2020-10-28 14:34:53,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:34:53,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-28 14:34:53,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:53,905 INFO L225 Difference]: With dead ends: 151 [2020-10-28 14:34:53,905 INFO L226 Difference]: Without dead ends: 130 [2020-10-28 14:34:53,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:34:53,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-28 14:34:53,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 115. [2020-10-28 14:34:53,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-28 14:34:53,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 161 transitions. [2020-10-28 14:34:53,917 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 161 transitions. Word has length 24 [2020-10-28 14:34:53,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:53,918 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 161 transitions. [2020-10-28 14:34:53,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:34:53,918 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 161 transitions. [2020-10-28 14:34:53,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:34:53,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:53,919 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:53,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:34:53,920 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:53,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:53,920 INFO L82 PathProgramCache]: Analyzing trace with hash -334303208, now seen corresponding path program 1 times [2020-10-28 14:34:53,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:53,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298186509] [2020-10-28 14:34:53,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:53,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:54,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:54,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 14:34:54,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:54,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-28 14:34:54,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:54,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:34:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:34:54,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:54,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:54,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:54,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:54,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:54,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:54,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:34:54,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:54,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:54,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:54,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:54,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:54,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:54,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298186509] [2020-10-28 14:34:54,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:54,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:34:54,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886832108] [2020-10-28 14:34:54,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:34:54,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:54,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:34:54,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:34:54,354 INFO L87 Difference]: Start difference. First operand 115 states and 161 transitions. Second operand 9 states. [2020-10-28 14:34:54,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:54,723 INFO L93 Difference]: Finished difference Result 128 states and 175 transitions. [2020-10-28 14:34:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:34:54,723 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-28 14:34:54,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:54,725 INFO L225 Difference]: With dead ends: 128 [2020-10-28 14:34:54,725 INFO L226 Difference]: Without dead ends: 124 [2020-10-28 14:34:54,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:34:54,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-28 14:34:54,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 115. [2020-10-28 14:34:54,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-28 14:34:54,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 161 transitions. [2020-10-28 14:34:54,736 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 161 transitions. Word has length 26 [2020-10-28 14:34:54,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:54,736 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 161 transitions. [2020-10-28 14:34:54,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:34:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 161 transitions. [2020-10-28 14:34:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:34:54,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:54,738 INFO L422 BasicCegarLoop]: trace histogram [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 14:34:54,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:34:54,738 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:54,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:54,739 INFO L82 PathProgramCache]: Analyzing trace with hash -332456166, now seen corresponding path program 1 times [2020-10-28 14:34:54,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:54,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714641551] [2020-10-28 14:34:54,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:54,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:55,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:55,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 14:34:55,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:34:55,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-28 14:34:55,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:55,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:34:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:34:55,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:55,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:55,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:55,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:55,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:55,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:55,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:34:55,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:55,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:55,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:55,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:55,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:55,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714641551] [2020-10-28 14:34:55,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:55,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:34:55,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315067243] [2020-10-28 14:34:55,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:34:55,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:55,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:34:55,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:34:55,272 INFO L87 Difference]: Start difference. First operand 115 states and 161 transitions. Second operand 9 states. [2020-10-28 14:34:55,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:55,618 INFO L93 Difference]: Finished difference Result 163 states and 229 transitions. [2020-10-28 14:34:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:34:55,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-28 14:34:55,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:55,620 INFO L225 Difference]: With dead ends: 163 [2020-10-28 14:34:55,620 INFO L226 Difference]: Without dead ends: 130 [2020-10-28 14:34:55,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:34:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-28 14:34:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 113. [2020-10-28 14:34:55,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-28 14:34:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 156 transitions. [2020-10-28 14:34:55,631 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 156 transitions. Word has length 26 [2020-10-28 14:34:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:55,632 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 156 transitions. [2020-10-28 14:34:55,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:34:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 156 transitions. [2020-10-28 14:34:55,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:34:55,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:55,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:55,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:34:55,636 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:55,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:55,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1143649834, now seen corresponding path program 1 times [2020-10-28 14:34:55,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:55,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109675990] [2020-10-28 14:34:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:55,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:55,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:56,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:56,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 14:34:56,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:34:56,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-28 14:34:56,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:56,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:34:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:34:56,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:56,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:56,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:56,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:56,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:56,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:56,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:34:56,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:56,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:56,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:56,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109675990] [2020-10-28 14:34:56,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:56,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:34:56,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057711614] [2020-10-28 14:34:56,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:34:56,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:56,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:34:56,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:34:56,405 INFO L87 Difference]: Start difference. First operand 113 states and 156 transitions. Second operand 9 states. [2020-10-28 14:34:56,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:56,752 INFO L93 Difference]: Finished difference Result 134 states and 181 transitions. [2020-10-28 14:34:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:34:56,752 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-28 14:34:56,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:56,753 INFO L225 Difference]: With dead ends: 134 [2020-10-28 14:34:56,753 INFO L226 Difference]: Without dead ends: 130 [2020-10-28 14:34:56,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:34:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-28 14:34:56,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 116. [2020-10-28 14:34:56,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-28 14:34:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 160 transitions. [2020-10-28 14:34:56,763 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 160 transitions. Word has length 26 [2020-10-28 14:34:56,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:56,763 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 160 transitions. [2020-10-28 14:34:56,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:34:56,763 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 160 transitions. [2020-10-28 14:34:56,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:34:56,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:56,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:56,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:34:56,765 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:56,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:56,765 INFO L82 PathProgramCache]: Analyzing trace with hash -183791184, now seen corresponding path program 1 times [2020-10-28 14:34:56,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:56,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647497177] [2020-10-28 14:34:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:56,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:56,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:56,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:57,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:57,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:57,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:57,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:34:57,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:34:57,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1108 [2020-10-28 14:34:57,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:57,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:57,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:34:57,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:57,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:34:57,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:58,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:58,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:58,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:58,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:58,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:34:58,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:58,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:58,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:58,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:58,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:58,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:58,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647497177] [2020-10-28 14:34:58,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:58,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:34:58,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543628562] [2020-10-28 14:34:58,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:34:58,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:58,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:34:58,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:34:58,161 INFO L87 Difference]: Start difference. First operand 116 states and 160 transitions. Second operand 10 states. [2020-10-28 14:34:58,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:58,529 INFO L93 Difference]: Finished difference Result 145 states and 196 transitions. [2020-10-28 14:34:58,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:34:58,530 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-28 14:34:58,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:58,531 INFO L225 Difference]: With dead ends: 145 [2020-10-28 14:34:58,532 INFO L226 Difference]: Without dead ends: 141 [2020-10-28 14:34:58,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:34:58,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-28 14:34:58,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 117. [2020-10-28 14:34:58,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-28 14:34:58,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 161 transitions. [2020-10-28 14:34:58,542 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 161 transitions. Word has length 28 [2020-10-28 14:34:58,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:58,542 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 161 transitions. [2020-10-28 14:34:58,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:34:58,543 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 161 transitions. [2020-10-28 14:34:58,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:34:58,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:58,544 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:58,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 14:34:58,544 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:58,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:58,544 INFO L82 PathProgramCache]: Analyzing trace with hash -664504933, now seen corresponding path program 3 times [2020-10-28 14:34:58,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:58,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229439120] [2020-10-28 14:34:58,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:58,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:58,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:34:58,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:58,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-28 14:34:58,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:58,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:58,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:34:58,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:34:58,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:58,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:58,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:58,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:58,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:58,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:34:58,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:58,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:58,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:34:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 14:34:58,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229439120] [2020-10-28 14:34:58,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:58,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:34:58,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403865685] [2020-10-28 14:34:58,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:34:58,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:58,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:34:58,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:34:58,975 INFO L87 Difference]: Start difference. First operand 117 states and 161 transitions. Second operand 8 states. [2020-10-28 14:34:59,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:34:59,264 INFO L93 Difference]: Finished difference Result 144 states and 197 transitions. [2020-10-28 14:34:59,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:34:59,265 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-28 14:34:59,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:34:59,266 INFO L225 Difference]: With dead ends: 144 [2020-10-28 14:34:59,267 INFO L226 Difference]: Without dead ends: 133 [2020-10-28 14:34:59,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:34:59,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-28 14:34:59,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 121. [2020-10-28 14:34:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-28 14:34:59,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 166 transitions. [2020-10-28 14:34:59,277 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 166 transitions. Word has length 28 [2020-10-28 14:34:59,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:34:59,278 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 166 transitions. [2020-10-28 14:34:59,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:34:59,278 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 166 transitions. [2020-10-28 14:34:59,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:34:59,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:34:59,279 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:34:59,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 14:34:59,279 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:34:59,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:34:59,280 INFO L82 PathProgramCache]: Analyzing trace with hash -564155042, now seen corresponding path program 2 times [2020-10-28 14:34:59,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:34:59,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735586064] [2020-10-28 14:34:59,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:34:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:59,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:59,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:59,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:34:59,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:59,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-28 14:34:59,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:59,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:59,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:34:59,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:34:59,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:34:59,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:59,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:34:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:34:59,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:34:59,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:34:59,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:34:59,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:34:59,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:34:59,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:34:59,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:34:59,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:34:59,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:34:59,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:34:59,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:34:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:34:59,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735586064] [2020-10-28 14:34:59,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:34:59,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:34:59,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018448433] [2020-10-28 14:34:59,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:34:59,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:34:59,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:34:59,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:34:59,871 INFO L87 Difference]: Start difference. First operand 121 states and 166 transitions. Second operand 10 states. [2020-10-28 14:35:00,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:00,395 INFO L93 Difference]: Finished difference Result 151 states and 204 transitions. [2020-10-28 14:35:00,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:35:00,396 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-28 14:35:00,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:00,397 INFO L225 Difference]: With dead ends: 151 [2020-10-28 14:35:00,397 INFO L226 Difference]: Without dead ends: 147 [2020-10-28 14:35:00,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:35:00,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-28 14:35:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 128. [2020-10-28 14:35:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-28 14:35:00,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 175 transitions. [2020-10-28 14:35:00,408 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 175 transitions. Word has length 30 [2020-10-28 14:35:00,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:00,408 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 175 transitions. [2020-10-28 14:35:00,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:35:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 175 transitions. [2020-10-28 14:35:00,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:35:00,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:00,409 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:00,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 14:35:00,409 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:00,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:00,410 INFO L82 PathProgramCache]: Analyzing trace with hash -562308000, now seen corresponding path program 2 times [2020-10-28 14:35:00,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:00,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284766299] [2020-10-28 14:35:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:00,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:00,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:00,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:00,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:35:00,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:35:00,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-28 14:35:00,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:00,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:35:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:35:00,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:00,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:00,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:00,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:00,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:00,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:35:00,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:00,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:00,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:00,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:00,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:00,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:00,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:35:00,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284766299] [2020-10-28 14:35:00,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:00,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:35:00,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344621806] [2020-10-28 14:35:00,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:35:00,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:00,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:35:00,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:35:00,961 INFO L87 Difference]: Start difference. First operand 128 states and 175 transitions. Second operand 10 states. [2020-10-28 14:35:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:01,511 INFO L93 Difference]: Finished difference Result 188 states and 259 transitions. [2020-10-28 14:35:01,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:35:01,512 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-28 14:35:01,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:01,513 INFO L225 Difference]: With dead ends: 188 [2020-10-28 14:35:01,513 INFO L226 Difference]: Without dead ends: 158 [2020-10-28 14:35:01,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:35:01,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-28 14:35:01,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-10-28 14:35:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-28 14:35:01,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 179 transitions. [2020-10-28 14:35:01,523 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 179 transitions. Word has length 30 [2020-10-28 14:35:01,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:01,523 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 179 transitions. [2020-10-28 14:35:01,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:35:01,524 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 179 transitions. [2020-10-28 14:35:01,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:35:01,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:01,525 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:01,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 14:35:01,525 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:01,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:01,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1373501668, now seen corresponding path program 2 times [2020-10-28 14:35:01,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:01,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431966191] [2020-10-28 14:35:01,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:01,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:01,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:02,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:02,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:35:02,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:35:02,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-28 14:35:02,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:02,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:02,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:35:02,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:02,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:35:02,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:02,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:02,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:02,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:02,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:02,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:02,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:02,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:02,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:02,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:02,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:02,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:02,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:35:02,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431966191] [2020-10-28 14:35:02,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:02,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:35:02,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127713257] [2020-10-28 14:35:02,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:35:02,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:02,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:35:02,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:35:02,239 INFO L87 Difference]: Start difference. First operand 131 states and 179 transitions. Second operand 10 states. [2020-10-28 14:35:02,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:02,745 INFO L93 Difference]: Finished difference Result 161 states and 215 transitions. [2020-10-28 14:35:02,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:35:02,745 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-28 14:35:02,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:02,747 INFO L225 Difference]: With dead ends: 161 [2020-10-28 14:35:02,747 INFO L226 Difference]: Without dead ends: 157 [2020-10-28 14:35:02,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:35:02,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-28 14:35:02,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 132. [2020-10-28 14:35:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-28 14:35:02,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 181 transitions. [2020-10-28 14:35:02,758 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 181 transitions. Word has length 30 [2020-10-28 14:35:02,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:02,758 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 181 transitions. [2020-10-28 14:35:02,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:35:02,758 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 181 transitions. [2020-10-28 14:35:02,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 14:35:02,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:02,759 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:02,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 14:35:02,759 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:02,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:02,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1089197329, now seen corresponding path program 2 times [2020-10-28 14:35:02,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:02,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226329642] [2020-10-28 14:35:02,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:02,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:02,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:03,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:03,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:03,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:03,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 14:35:03,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:35:03,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-10-28 14:35:03,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:03,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:03,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:35:03,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:03,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:35:03,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:03,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:03,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:03,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:03,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:03,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:03,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:35:03,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:03,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:03,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:03,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:03,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:03,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:35:03,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226329642] [2020-10-28 14:35:03,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:03,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:35:03,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390553808] [2020-10-28 14:35:03,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:35:03,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:03,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:35:03,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:35:03,935 INFO L87 Difference]: Start difference. First operand 132 states and 181 transitions. Second operand 8 states. [2020-10-28 14:35:04,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:04,201 INFO L93 Difference]: Finished difference Result 178 states and 241 transitions. [2020-10-28 14:35:04,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:35:04,201 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-28 14:35:04,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:04,203 INFO L225 Difference]: With dead ends: 178 [2020-10-28 14:35:04,203 INFO L226 Difference]: Without dead ends: 157 [2020-10-28 14:35:04,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:35:04,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-28 14:35:04,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 148. [2020-10-28 14:35:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-28 14:35:04,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 202 transitions. [2020-10-28 14:35:04,217 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 202 transitions. Word has length 32 [2020-10-28 14:35:04,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:04,217 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 202 transitions. [2020-10-28 14:35:04,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:35:04,217 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 202 transitions. [2020-10-28 14:35:04,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 14:35:04,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:04,218 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:04,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 14:35:04,218 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:04,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:04,219 INFO L82 PathProgramCache]: Analyzing trace with hash 694323277, now seen corresponding path program 1 times [2020-10-28 14:35:04,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:04,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466195127] [2020-10-28 14:35:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:04,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:04,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:04,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:04,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:04,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:04,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 14:35:04,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:35:04,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-10-28 14:35:04,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:04,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:35:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:35:04,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:05,045 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-10-28 14:35:05,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:05,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:05,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:05,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:05,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:05,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:05,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:05,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:05,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:05,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:05,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:05,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:35:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:35:05,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466195127] [2020-10-28 14:35:05,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:05,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:35:05,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545656985] [2020-10-28 14:35:05,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:35:05,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:05,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:35:05,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:35:05,127 INFO L87 Difference]: Start difference. First operand 148 states and 202 transitions. Second operand 8 states. [2020-10-28 14:35:05,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:05,560 INFO L93 Difference]: Finished difference Result 167 states and 221 transitions. [2020-10-28 14:35:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:35:05,561 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-28 14:35:05,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:05,562 INFO L225 Difference]: With dead ends: 167 [2020-10-28 14:35:05,562 INFO L226 Difference]: Without dead ends: 163 [2020-10-28 14:35:05,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:35:05,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-28 14:35:05,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 116. [2020-10-28 14:35:05,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-28 14:35:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 158 transitions. [2020-10-28 14:35:05,574 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 158 transitions. Word has length 32 [2020-10-28 14:35:05,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:05,574 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 158 transitions. [2020-10-28 14:35:05,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:35:05,575 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 158 transitions. [2020-10-28 14:35:05,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 14:35:05,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:05,576 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:05,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 14:35:05,576 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:05,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:05,576 INFO L82 PathProgramCache]: Analyzing trace with hash -608812959, now seen corresponding path program 3 times [2020-10-28 14:35:05,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:05,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205370470] [2020-10-28 14:35:05,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:05,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:05,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:05,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 14:35:05,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:05,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-28 14:35:05,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:05,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:05,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:35:05,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:05,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:35:05,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:06,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:06,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:06,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:06,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:06,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:06,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:06,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:06,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:06,112 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:35:06,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205370470] [2020-10-28 14:35:06,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:06,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:35:06,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632415897] [2020-10-28 14:35:06,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:35:06,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:06,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:35:06,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:35:06,114 INFO L87 Difference]: Start difference. First operand 116 states and 158 transitions. Second operand 9 states. [2020-10-28 14:35:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:06,732 INFO L93 Difference]: Finished difference Result 211 states and 296 transitions. [2020-10-28 14:35:06,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:35:06,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-28 14:35:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:06,734 INFO L225 Difference]: With dead ends: 211 [2020-10-28 14:35:06,734 INFO L226 Difference]: Without dead ends: 181 [2020-10-28 14:35:06,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:35:06,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-28 14:35:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 169. [2020-10-28 14:35:06,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-28 14:35:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 237 transitions. [2020-10-28 14:35:06,749 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 237 transitions. Word has length 32 [2020-10-28 14:35:06,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:06,749 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 237 transitions. [2020-10-28 14:35:06,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:35:06,750 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 237 transitions. [2020-10-28 14:35:06,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 14:35:06,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:06,751 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:06,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 14:35:06,751 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:06,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:06,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1633197510, now seen corresponding path program 1 times [2020-10-28 14:35:06,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:06,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696674671] [2020-10-28 14:35:06,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:06,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:06,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:07,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:07,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:08,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:08,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 14:35:08,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:35:08,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1694 [2020-10-28 14:35:08,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:08,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:35:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:35:08,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:08,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:08,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:08,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:08,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:08,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:08,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:08,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:08,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:35:08,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696674671] [2020-10-28 14:35:08,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:08,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:35:08,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92467984] [2020-10-28 14:35:08,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:35:08,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:08,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:35:08,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:35:08,630 INFO L87 Difference]: Start difference. First operand 169 states and 237 transitions. Second operand 9 states. [2020-10-28 14:35:09,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:09,008 INFO L93 Difference]: Finished difference Result 232 states and 324 transitions. [2020-10-28 14:35:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:35:09,013 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-28 14:35:09,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:09,015 INFO L225 Difference]: With dead ends: 232 [2020-10-28 14:35:09,015 INFO L226 Difference]: Without dead ends: 211 [2020-10-28 14:35:09,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:35:09,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-28 14:35:09,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 175. [2020-10-28 14:35:09,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-28 14:35:09,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 245 transitions. [2020-10-28 14:35:09,046 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 245 transitions. Word has length 32 [2020-10-28 14:35:09,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:09,047 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 245 transitions. [2020-10-28 14:35:09,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:35:09,047 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 245 transitions. [2020-10-28 14:35:09,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 14:35:09,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:09,048 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:09,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 14:35:09,050 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:09,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:09,050 INFO L82 PathProgramCache]: Analyzing trace with hash -2028071562, now seen corresponding path program 2 times [2020-10-28 14:35:09,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:09,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097861803] [2020-10-28 14:35:09,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:09,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:09,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:09,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:09,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:09,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:10,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:10,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 14:35:10,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:35:10,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1229 [2020-10-28 14:35:10,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:10,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:35:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:35:10,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:10,553 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 22 [2020-10-28 14:35:10,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:10,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:10,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:10,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:10,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:10,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:10,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:10,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:10,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:35:10,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097861803] [2020-10-28 14:35:10,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:10,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:35:10,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611504672] [2020-10-28 14:35:10,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:35:10,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:10,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:35:10,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:35:10,628 INFO L87 Difference]: Start difference. First operand 175 states and 245 transitions. Second operand 9 states. [2020-10-28 14:35:11,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:11,425 INFO L93 Difference]: Finished difference Result 274 states and 380 transitions. [2020-10-28 14:35:11,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:35:11,428 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-28 14:35:11,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:11,430 INFO L225 Difference]: With dead ends: 274 [2020-10-28 14:35:11,430 INFO L226 Difference]: Without dead ends: 270 [2020-10-28 14:35:11,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:35:11,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-28 14:35:11,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 145. [2020-10-28 14:35:11,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-28 14:35:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 203 transitions. [2020-10-28 14:35:11,456 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 203 transitions. Word has length 32 [2020-10-28 14:35:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:11,457 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 203 transitions. [2020-10-28 14:35:11,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:35:11,457 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 203 transitions. [2020-10-28 14:35:11,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:35:11,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:11,458 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:11,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 14:35:11,458 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:11,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:11,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1149135813, now seen corresponding path program 1 times [2020-10-28 14:35:11,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:11,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788886601] [2020-10-28 14:35:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:11,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:11,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:11,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:12,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:12,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:35:12,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:35:12,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-10-28 14:35:12,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:12,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:35:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:35:12,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:12,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:12,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:12,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:12,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:12,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:12,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:12,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:12,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:12,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:35:12,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788886601] [2020-10-28 14:35:12,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:12,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:35:12,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467829527] [2020-10-28 14:35:12,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:35:12,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:12,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:35:12,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:35:12,613 INFO L87 Difference]: Start difference. First operand 145 states and 203 transitions. Second operand 10 states. [2020-10-28 14:35:13,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:13,019 INFO L93 Difference]: Finished difference Result 174 states and 238 transitions. [2020-10-28 14:35:13,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:35:13,020 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-28 14:35:13,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:13,022 INFO L225 Difference]: With dead ends: 174 [2020-10-28 14:35:13,022 INFO L226 Difference]: Without dead ends: 170 [2020-10-28 14:35:13,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:35:13,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-28 14:35:13,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 149. [2020-10-28 14:35:13,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-28 14:35:13,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 209 transitions. [2020-10-28 14:35:13,041 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 209 transitions. Word has length 34 [2020-10-28 14:35:13,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:13,041 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 209 transitions. [2020-10-28 14:35:13,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:35:13,042 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 209 transitions. [2020-10-28 14:35:13,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:35:13,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:13,043 INFO L422 BasicCegarLoop]: trace histogram [3, 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 14:35:13,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 14:35:13,043 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:13,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:13,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1147288771, now seen corresponding path program 2 times [2020-10-28 14:35:13,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:13,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304455135] [2020-10-28 14:35:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:13,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:13,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:13,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:13,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:14,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:14,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:35:14,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:35:14,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-10-28 14:35:14,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:14,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:35:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:35:14,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:14,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:14,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:14,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:14,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:14,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:14,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:14,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:14,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:14,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:14,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:14,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:35:14,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304455135] [2020-10-28 14:35:14,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:14,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:35:14,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250343348] [2020-10-28 14:35:14,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:35:14,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:14,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:35:14,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:35:14,285 INFO L87 Difference]: Start difference. First operand 149 states and 209 transitions. Second operand 10 states. [2020-10-28 14:35:14,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:14,775 INFO L93 Difference]: Finished difference Result 193 states and 267 transitions. [2020-10-28 14:35:14,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:35:14,776 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-28 14:35:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:14,777 INFO L225 Difference]: With dead ends: 193 [2020-10-28 14:35:14,777 INFO L226 Difference]: Without dead ends: 159 [2020-10-28 14:35:14,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:35:14,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-28 14:35:14,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2020-10-28 14:35:14,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-28 14:35:14,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 206 transitions. [2020-10-28 14:35:14,792 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 206 transitions. Word has length 34 [2020-10-28 14:35:14,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:14,792 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 206 transitions. [2020-10-28 14:35:14,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:35:14,792 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 206 transitions. [2020-10-28 14:35:14,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:35:14,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:14,794 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 14:35:14,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 14:35:14,794 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:14,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:14,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1958482439, now seen corresponding path program 1 times [2020-10-28 14:35:14,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:14,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317901762] [2020-10-28 14:35:14,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:14,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:14,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:15,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:16,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:16,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:35:16,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:35:16,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1417 [2020-10-28 14:35:16,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:16,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:35:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:35:16,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:16,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:16,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:16,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:16,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:16,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:16,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:16,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:16,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:16,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:16,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:16,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:16,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:35:16,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317901762] [2020-10-28 14:35:16,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:16,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:35:16,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982274621] [2020-10-28 14:35:16,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:35:16,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:16,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:35:16,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:35:16,480 INFO L87 Difference]: Start difference. First operand 149 states and 206 transitions. Second operand 10 states. [2020-10-28 14:35:16,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:16,957 INFO L93 Difference]: Finished difference Result 162 states and 218 transitions. [2020-10-28 14:35:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:35:16,957 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-28 14:35:16,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:16,959 INFO L225 Difference]: With dead ends: 162 [2020-10-28 14:35:16,959 INFO L226 Difference]: Without dead ends: 158 [2020-10-28 14:35:16,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:35:16,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-28 14:35:16,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-10-28 14:35:16,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-28 14:35:16,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 194 transitions. [2020-10-28 14:35:16,972 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 194 transitions. Word has length 34 [2020-10-28 14:35:16,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:16,972 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 194 transitions. [2020-10-28 14:35:16,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:35:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 194 transitions. [2020-10-28 14:35:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:35:16,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:16,973 INFO L422 BasicCegarLoop]: trace histogram [3, 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 14:35:16,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 14:35:16,974 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:16,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1599782787, now seen corresponding path program 3 times [2020-10-28 14:35:16,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:16,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097122946] [2020-10-28 14:35:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:16,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:19,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:19,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:35:19,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:35:19,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2089 [2020-10-28 14:35:19,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:19,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:19,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:35:19,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:19,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:35:19,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:19,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:19,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:19,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:19,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:19,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:19,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:19,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:19,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:19,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:19,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:19,282 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:35:19,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097122946] [2020-10-28 14:35:19,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:19,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:35:19,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278736574] [2020-10-28 14:35:19,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:35:19,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:19,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:35:19,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:35:19,285 INFO L87 Difference]: Start difference. First operand 141 states and 194 transitions. Second operand 9 states. [2020-10-28 14:35:19,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:19,654 INFO L93 Difference]: Finished difference Result 224 states and 306 transitions. [2020-10-28 14:35:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:35:19,656 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-28 14:35:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:19,658 INFO L225 Difference]: With dead ends: 224 [2020-10-28 14:35:19,658 INFO L226 Difference]: Without dead ends: 195 [2020-10-28 14:35:19,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:35:19,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-28 14:35:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 165. [2020-10-28 14:35:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-28 14:35:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 227 transitions. [2020-10-28 14:35:19,672 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 227 transitions. Word has length 34 [2020-10-28 14:35:19,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:19,672 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 227 transitions. [2020-10-28 14:35:19,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:35:19,672 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 227 transitions. [2020-10-28 14:35:19,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:35:19,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:19,676 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:19,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 14:35:19,677 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:19,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:19,677 INFO L82 PathProgramCache]: Analyzing trace with hash 903894948, now seen corresponding path program 4 times [2020-10-28 14:35:19,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:19,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028896552] [2020-10-28 14:35:19,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:19,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:20,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:20,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:35:20,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:20,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-28 14:35:20,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:20,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:20,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:35:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:35:20,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:20,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:20,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:20,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:20,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:20,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:20,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:20,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:20,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:20,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:35:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:35:20,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028896552] [2020-10-28 14:35:20,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:20,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:35:20,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399676417] [2020-10-28 14:35:20,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:35:20,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:20,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:35:20,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:35:20,448 INFO L87 Difference]: Start difference. First operand 165 states and 227 transitions. Second operand 11 states. [2020-10-28 14:35:21,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:21,295 INFO L93 Difference]: Finished difference Result 276 states and 381 transitions. [2020-10-28 14:35:21,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:35:21,296 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-28 14:35:21,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:21,299 INFO L225 Difference]: With dead ends: 276 [2020-10-28 14:35:21,299 INFO L226 Difference]: Without dead ends: 272 [2020-10-28 14:35:21,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:35:21,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-28 14:35:21,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 202. [2020-10-28 14:35:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-28 14:35:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 283 transitions. [2020-10-28 14:35:21,328 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 283 transitions. Word has length 34 [2020-10-28 14:35:21,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:21,328 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 283 transitions. [2020-10-28 14:35:21,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:35:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 283 transitions. [2020-10-28 14:35:21,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:35:21,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:21,329 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:21,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 14:35:21,330 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:21,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:21,330 INFO L82 PathProgramCache]: Analyzing trace with hash 905741990, now seen corresponding path program 3 times [2020-10-28 14:35:21,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:21,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516114375] [2020-10-28 14:35:21,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:21,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:21,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:21,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:21,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:35:21,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:35:21,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-28 14:35:21,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:21,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:35:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:35:21,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:21,973 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 10: A-local: [(main_~p~0.base_13 Int)], B-local: []. [2020-10-28 14:35:21,993 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 11: A-local: [(main_~p~0.base_13 Int)], B-local: []. [2020-10-28 14:35:21,996 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 12: A-local: [(main_~p~0.base_13 Int)], B-local: []. [2020-10-28 14:35:21,998 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 13: A-local: [(main_~p~0.base_13 Int)], B-local: []. [2020-10-28 14:35:22,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 14:35:22,024 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:851) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-28 14:35:22,030 INFO L168 Benchmark]: Toolchain (without parser) took 36990.62 ms. Allocated memory was 164.6 MB in the beginning and 499.1 MB in the end (delta: 334.5 MB). Free memory was 137.4 MB in the beginning and 225.2 MB in the end (delta: -87.8 MB). Peak memory consumption was 247.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:35:22,030 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 164.6 MB. Free memory is still 135.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:35:22,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 545.68 ms. Allocated memory is still 164.6 MB. Free memory was 136.6 MB in the beginning and 115.5 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:35:22,031 INFO L168 Benchmark]: Boogie Preprocessor took 62.70 ms. Allocated memory is still 164.6 MB. Free memory was 115.5 MB in the beginning and 112.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:35:22,031 INFO L168 Benchmark]: RCFGBuilder took 657.58 ms. Allocated memory is still 164.6 MB. Free memory was 112.7 MB in the beginning and 109.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:35:22,032 INFO L168 Benchmark]: TraceAbstraction took 35713.37 ms. Allocated memory was 164.6 MB in the beginning and 499.1 MB in the end (delta: 334.5 MB). Free memory was 109.4 MB in the beginning and 225.2 MB in the end (delta: -115.8 MB). Peak memory consumption was 218.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:35:22,034 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 164.6 MB. Free memory is still 135.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 545.68 ms. Allocated memory is still 164.6 MB. Free memory was 136.6 MB in the beginning and 115.5 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.70 ms. Allocated memory is still 164.6 MB. Free memory was 115.5 MB in the beginning and 112.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 657.58 ms. Allocated memory is still 164.6 MB. Free memory was 112.7 MB in the beginning and 109.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 35713.37 ms. Allocated memory was 164.6 MB in the beginning and 499.1 MB in the end (delta: 334.5 MB). Free memory was 109.4 MB in the beginning and 225.2 MB in the end (delta: -115.8 MB). Peak memory consumption was 218.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...