/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-simple/sll2c_insert_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:24:11,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:24:11,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:24:11,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:24:11,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:24:11,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:24:11,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:24:11,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:24:11,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:24:11,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:24:11,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:24:11,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:24:11,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:24:11,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:24:11,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:24:11,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:24:11,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:24:11,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:24:11,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:24:11,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:24:11,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:24:11,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:24:11,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:24:11,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:24:11,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:24:11,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:24:11,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:24:11,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:24:11,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:24:11,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:24:11,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:24:11,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:24:11,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:24:11,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:24:11,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:24:11,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:24:11,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:24:11,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:24:11,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:24:11,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:24:11,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:24:11,633 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:24:11,684 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:24:11,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:24:11,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:24:11,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:24:11,689 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:24:11,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:24:11,689 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:24:11,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:24:11,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:24:11,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:24:11,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:24:11,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:24:11,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:24:11,691 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:24:11,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:24:11,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:24:11,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:24:11,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:24:11,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:24:11,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:24:11,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:24:11,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:24:11,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:24:11,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:24:11,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:24:11,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:24:11,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:24:11,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:24:11,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:24:11,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:24:12,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:24:12,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:24:12,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:24:12,175 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:24:12,175 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:24:12,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_insert_unequal.i [2020-10-27 01:24:12,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16fbca685/f04f4c35f914422dbf96b0d130fe2c0f/FLAG388f3fa64 [2020-10-27 01:24:12,977 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:24:12,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2c_insert_unequal.i [2020-10-27 01:24:12,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16fbca685/f04f4c35f914422dbf96b0d130fe2c0f/FLAG388f3fa64 [2020-10-27 01:24:13,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16fbca685/f04f4c35f914422dbf96b0d130fe2c0f [2020-10-27 01:24:13,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:24:13,270 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:24:13,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:24:13,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:24:13,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:24:13,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:24:13" (1/1) ... [2020-10-27 01:24:13,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311aa890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:13, skipping insertion in model container [2020-10-27 01:24:13,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:24:13" (1/1) ... [2020-10-27 01:24:13,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:24:13,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:24:13,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:24:13,906 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:24:14,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:24:14,125 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:24:14,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:14 WrapperNode [2020-10-27 01:24:14,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:24:14,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:24:14,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:24:14,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:24:14,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:14" (1/1) ... [2020-10-27 01:24:14,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:14" (1/1) ... [2020-10-27 01:24:14,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:14" (1/1) ... [2020-10-27 01:24:14,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:14" (1/1) ... [2020-10-27 01:24:14,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:14" (1/1) ... [2020-10-27 01:24:14,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:14" (1/1) ... [2020-10-27 01:24:14,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:14" (1/1) ... [2020-10-27 01:24:14,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:24:14,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:24:14,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:24:14,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:24:14,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:24:14,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:24:14,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:24:14,453 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:24:14,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 01:24:14,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 01:24:14,455 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 01:24:14,455 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-27 01:24:14,458 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2020-10-27 01:24:14,458 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2020-10-27 01:24:14,458 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_insert [2020-10-27 01:24:14,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:24:14,460 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:24:14,460 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:24:14,460 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:24:14,460 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:24:14,462 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:24:14,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:24:14,462 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 01:24:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 01:24:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 01:24:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 01:24:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 01:24:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 01:24:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 01:24:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 01:24:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 01:24:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 01:24:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 01:24:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 01:24:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 01:24:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 01:24:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 01:24:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 01:24:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 01:24:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 01:24:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 01:24:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 01:24:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 01:24:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 01:24:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 01:24:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 01:24:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 01:24:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 01:24:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 01:24:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 01:24:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 01:24:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 01:24:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 01:24:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 01:24:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 01:24:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 01:24:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 01:24:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 01:24:14,470 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 01:24:14,471 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 01:24:14,471 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 01:24:14,471 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 01:24:14,472 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 01:24:14,472 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 01:24:14,472 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 01:24:14,472 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 01:24:14,472 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 01:24:14,472 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 01:24:14,472 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 01:24:14,473 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 01:24:14,473 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 01:24:14,473 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 01:24:14,473 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 01:24:14,473 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 01:24:14,473 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:24:14,474 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:24:14,474 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:24:14,475 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:24:14,476 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 01:24:14,476 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 01:24:14,476 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:24:14,476 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 01:24:14,476 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 01:24:14,476 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 01:24:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 01:24:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 01:24:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 01:24:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 01:24:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 01:24:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 01:24:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 01:24:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 01:24:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 01:24:14,479 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 01:24:14,479 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 01:24:14,479 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 01:24:14,479 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 01:24:14,479 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 01:24:14,479 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 01:24:14,479 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 01:24:14,479 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 01:24:14,480 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 01:24:14,480 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 01:24:14,480 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 01:24:14,480 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 01:24:14,480 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 01:24:14,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 01:24:14,480 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 01:24:14,481 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 01:24:14,481 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 01:24:14,481 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 01:24:14,481 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 01:24:14,481 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 01:24:14,481 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 01:24:14,481 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 01:24:14,481 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 01:24:14,482 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 01:24:14,482 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 01:24:14,482 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 01:24:14,482 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 01:24:14,482 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 01:24:14,483 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 01:24:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 01:24:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 01:24:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 01:24:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 01:24:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 01:24:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-27 01:24:14,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:24:14,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:24:14,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:24:14,485 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2020-10-27 01:24:14,485 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2020-10-27 01:24:14,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:24:14,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:24:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_insert [2020-10-27 01:24:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:24:14,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 01:24:14,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:24:14,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:24:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:24:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:24:14,933 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 01:24:15,250 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:24:15,251 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-27 01:24:15,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:24:15 BoogieIcfgContainer [2020-10-27 01:24:15,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:24:15,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:24:15,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:24:15,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:24:15,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:24:13" (1/3) ... [2020-10-27 01:24:15,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d064016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:24:15, skipping insertion in model container [2020-10-27 01:24:15,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:24:14" (2/3) ... [2020-10-27 01:24:15,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d064016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:24:15, skipping insertion in model container [2020-10-27 01:24:15,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:24:15" (3/3) ... [2020-10-27 01:24:15,263 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_insert_unequal.i [2020-10-27 01:24:15,277 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:24:15,282 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:24:15,297 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:24:15,340 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:24:15,340 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:24:15,340 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:24:15,340 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:24:15,340 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:24:15,341 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:24:15,341 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:24:15,341 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:24:15,360 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-27 01:24:15,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 01:24:15,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:15,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:24:15,371 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:15,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:15,378 INFO L82 PathProgramCache]: Analyzing trace with hash -431859683, now seen corresponding path program 1 times [2020-10-27 01:24:15,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:15,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279196920] [2020-10-27 01:24:15,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:15,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:15,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:16,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:17,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:17,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 01:24:17,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:24:17,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2185 [2020-10-27 01:24:17,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:17,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:24:17,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:17,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 01:24:17,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:24:17,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:17,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:17,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:17,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:17,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:17,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:24:17,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:17,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:17,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:24:17,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:18,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:18,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:18,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:24:18,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:18,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 01:24:18,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:18,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:18,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:18,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:24:18,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:18,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:18,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:18,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:18,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:18,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:18,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 01:24:18,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:18,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:18,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:24:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:18,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:18,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:18,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:18,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:24:18,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:18,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 01:24:18,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:18,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:24:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:24:18,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:18,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:18,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:18,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:18,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:18,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:18,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 01:24:18,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:18,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:18,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:18,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:24:18,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 01:24:18,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279196920] [2020-10-27 01:24:18,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:24:18,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 01:24:18,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612649502] [2020-10-27 01:24:18,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:24:18,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:18,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:24:18,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:24:18,409 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 8 states. [2020-10-27 01:24:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:18,873 INFO L93 Difference]: Finished difference Result 126 states and 171 transitions. [2020-10-27 01:24:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:24:18,876 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-27 01:24:18,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:18,887 INFO L225 Difference]: With dead ends: 126 [2020-10-27 01:24:18,887 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 01:24:18,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:24:18,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 01:24:18,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-27 01:24:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 01:24:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2020-10-27 01:24:18,945 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 39 [2020-10-27 01:24:18,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:18,947 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2020-10-27 01:24:18,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:24:18,948 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2020-10-27 01:24:18,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 01:24:18,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:18,950 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:24:18,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:24:18,951 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:18,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:18,952 INFO L82 PathProgramCache]: Analyzing trace with hash -19764992, now seen corresponding path program 1 times [2020-10-27 01:24:18,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:18,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783219158] [2020-10-27 01:24:18,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:19,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:19,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:20,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 01:24:21,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:24:21,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2557 [2020-10-27 01:24:21,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:21,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:24:21,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:21,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:21,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:21,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:21,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:24:21,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:21,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:21,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:21,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:24:21,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:21,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 01:24:21,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:21,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:24:21,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:24:21,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:21,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:21,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:21,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:21,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:24:21,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:21,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:21,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:24:21,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:21,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:24:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:21,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:24:21,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:21,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 01:24:21,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:21,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 01:24:21,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:21,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:21,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:21,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:21,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:21,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:21,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:21,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:24:21,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:21,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:21,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:21,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:24:21,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783219158] [2020-10-27 01:24:21,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:24:21,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 01:24:21,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143213693] [2020-10-27 01:24:21,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:24:21,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:21,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:24:21,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:24:21,811 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand 7 states. [2020-10-27 01:24:22,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:22,141 INFO L93 Difference]: Finished difference Result 88 states and 107 transitions. [2020-10-27 01:24:22,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:24:22,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-27 01:24:22,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:22,144 INFO L225 Difference]: With dead ends: 88 [2020-10-27 01:24:22,144 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 01:24:22,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:24:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 01:24:22,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-27 01:24:22,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 01:24:22,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-10-27 01:24:22,158 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 40 [2020-10-27 01:24:22,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:22,159 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-10-27 01:24:22,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:24:22,159 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-10-27 01:24:22,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 01:24:22,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:22,161 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:24:22,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:24:22,161 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:22,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:22,162 INFO L82 PathProgramCache]: Analyzing trace with hash -52928264, now seen corresponding path program 1 times [2020-10-27 01:24:22,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:22,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693132863] [2020-10-27 01:24:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:22,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:23,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:23,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 01:24:23,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1675 [2020-10-27 01:24:23,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 01:24:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 01:24:23,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:24,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:24,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:24,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:24,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:24,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:24,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:24:24,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:24,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:24,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:24,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:24,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:24,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:24:24,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:24,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-27 01:24:24,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:24,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:24:24,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:24,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:24:24,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:24,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:24,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:24,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:24,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:24,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:24,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 01:24:24,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:24:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:24:24,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:24,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:24:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:24,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:24,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:24,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:24,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:24,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 01:24:24,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:24,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:24:24,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:24,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:24:24,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:24,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:24:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:24,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:25,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:25,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:24:25,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:25,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-27 01:24:25,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:24:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:24:25,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:24:25,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:25,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:26,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:26,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:26,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:26,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 01:24:26,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:24:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:26,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:24:26,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:24:26,528 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-27 01:24:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:24:26,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693132863] [2020-10-27 01:24:26,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:24:26,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 01:24:26,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991241174] [2020-10-27 01:24:26,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 01:24:26,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:26,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 01:24:26,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2020-10-27 01:24:26,565 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 27 states. [2020-10-27 01:24:29,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:29,104 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2020-10-27 01:24:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 01:24:29,105 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 48 [2020-10-27 01:24:29,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:29,110 INFO L225 Difference]: With dead ends: 76 [2020-10-27 01:24:29,110 INFO L226 Difference]: Without dead ends: 72 [2020-10-27 01:24:29,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=155, Invalid=1651, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 01:24:29,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-27 01:24:29,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2020-10-27 01:24:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-27 01:24:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2020-10-27 01:24:29,140 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 48 [2020-10-27 01:24:29,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:29,140 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2020-10-27 01:24:29,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 01:24:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2020-10-27 01:24:29,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 01:24:29,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:29,147 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:24:29,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:24:29,147 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:29,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:29,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1157792891, now seen corresponding path program 2 times [2020-10-27 01:24:29,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:29,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411192570] [2020-10-27 01:24:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:29,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:29,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:30,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:30,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 01:24:30,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:30,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1059 [2020-10-27 01:24:30,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:24:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 01:24:30,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:30,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:30,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:30,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:30,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:30,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:30,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:24:30,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:30,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:30,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:30,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:30,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:24:30,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:30,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:30,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:30,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:30,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:24:30,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:30,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 01:24:30,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:30,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:24:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:24:30,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:30,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:30,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:30,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:30,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:30,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:30,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:24:30,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:24:30,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:30,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:24:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:30,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:30,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:30,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:30,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:30,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:24:30,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:30,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:30,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:30,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:24:30,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:24:30,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:24:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:30,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:30,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:30,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:24:30,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:30,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 01:24:30,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:30,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:24:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:24:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:24:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:24:30,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:30,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:30,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:30,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:30,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:30,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:24:30,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:30,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:24:30,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 01:24:30,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411192570] [2020-10-27 01:24:30,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:24:30,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 01:24:30,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868395332] [2020-10-27 01:24:30,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 01:24:30,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:30,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 01:24:30,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:24:30,766 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand 13 states. [2020-10-27 01:24:31,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:31,360 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2020-10-27 01:24:31,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 01:24:31,361 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-27 01:24:31,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:31,362 INFO L225 Difference]: With dead ends: 79 [2020-10-27 01:24:31,363 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 01:24:31,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-10-27 01:24:31,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 01:24:31,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-27 01:24:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-27 01:24:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-27 01:24:31,379 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 49 [2020-10-27 01:24:31,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:31,380 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-27 01:24:31,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 01:24:31,380 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-27 01:24:31,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 01:24:31,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:31,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:24:31,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:24:31,382 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:31,382 INFO L82 PathProgramCache]: Analyzing trace with hash -144661634, now seen corresponding path program 1 times [2020-10-27 01:24:31,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:31,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473758813] [2020-10-27 01:24:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:31,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:31,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:31,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:33,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:33,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 01:24:33,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:24:33,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2177 [2020-10-27 01:24:33,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:33,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 01:24:33,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:33,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 01:24:33,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:33,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:33,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:33,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:33,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:33,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:24:33,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:33,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:33,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:33,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:33,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:33,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:33,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:24:33,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 01:24:33,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:24:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:33,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:24:33,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:33,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:33,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:33,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:33,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:33,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:33,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:24:33,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:33,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:33,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:33,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:33,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:33,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:24:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:33,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:33,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:33,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:33,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:33,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:24:33,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:24:33,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:33,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:24:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:33,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:33,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:34,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:34,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:24:34,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:34,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 01:24:34,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:24:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 01:24:34,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:34,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:34,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:34,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:34,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:34,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:34,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 01:24:34,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:24:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:24:34,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:24:34,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473758813] [2020-10-27 01:24:34,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:24:34,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 01:24:34,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541650226] [2020-10-27 01:24:34,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 01:24:34,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:34,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 01:24:34,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:24:34,451 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 19 states. [2020-10-27 01:24:35,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:35,728 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2020-10-27 01:24:35,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 01:24:35,730 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-10-27 01:24:35,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:35,732 INFO L225 Difference]: With dead ends: 72 [2020-10-27 01:24:35,732 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 01:24:35,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2020-10-27 01:24:35,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 01:24:35,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-27 01:24:35,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 01:24:35,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-10-27 01:24:35,742 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 50 [2020-10-27 01:24:35,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:35,743 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-10-27 01:24:35,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 01:24:35,743 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-10-27 01:24:35,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 01:24:35,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:35,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:24:35,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:24:35,744 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:35,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:35,745 INFO L82 PathProgramCache]: Analyzing trace with hash -7842672, now seen corresponding path program 1 times [2020-10-27 01:24:35,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:35,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049707040] [2020-10-27 01:24:35,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:35,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:37,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:37,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 01:24:37,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:37,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1590 [2020-10-27 01:24:37,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 01:24:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 01:24:37,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:37,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:37,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:37,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:37,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:37,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:24:37,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:37,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:37,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:37,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:37,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:37,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:37,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:37,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:37,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:24:37,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:37,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 01:24:37,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:24:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:37,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:24:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:37,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:37,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:37,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:37,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:37,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:37,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:24:37,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:37,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:37,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:37,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:37,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:37,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:24:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:37,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:37,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:37,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:37,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:37,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 01:24:37,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:37,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:24:37,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:37,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:24:37,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:37,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:24:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:37,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:38,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:38,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:24:38,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:38,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-27 01:24:38,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:24:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:24:38,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:38,774 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-27 01:24:39,169 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2020-10-27 01:24:40,065 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 132 [2020-10-27 01:24:40,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:40,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:40,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:40,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:40,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:40,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 01:24:40,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:40,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:24:40,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:40,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:24:40,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:40,812 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-27 01:24:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:24:40,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049707040] [2020-10-27 01:24:40,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:24:40,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 01:24:40,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974713440] [2020-10-27 01:24:40,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 01:24:40,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:40,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 01:24:40,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-27 01:24:40,861 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 23 states. [2020-10-27 01:24:42,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:42,900 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-10-27 01:24:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 01:24:42,906 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 52 [2020-10-27 01:24:42,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:42,908 INFO L225 Difference]: With dead ends: 62 [2020-10-27 01:24:42,908 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 01:24:42,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2020-10-27 01:24:42,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 01:24:42,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-27 01:24:42,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 01:24:42,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2020-10-27 01:24:42,920 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 52 [2020-10-27 01:24:42,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:42,921 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2020-10-27 01:24:42,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 01:24:42,921 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2020-10-27 01:24:42,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 01:24:42,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:42,922 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:24:42,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:24:42,923 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:42,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:42,923 INFO L82 PathProgramCache]: Analyzing trace with hash 34162638, now seen corresponding path program 1 times [2020-10-27 01:24:42,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:42,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343802470] [2020-10-27 01:24:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:42,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:43,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:43,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:43,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:45,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:45,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 01:24:45,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:24:45,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2341 [2020-10-27 01:24:45,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:45,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:24:45,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:45,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 01:24:45,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:45,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:45,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:45,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:45,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:45,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:24:45,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:45,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:45,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:45,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:45,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:45,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:45,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:24:45,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:45,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 01:24:45,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:24:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:24:45,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:45,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:45,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:45,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:45,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:45,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:45,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:24:45,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:45,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:45,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:45,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:24:45,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:45,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:24:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:45,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:45,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:45,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:45,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:45,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:24:45,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:45,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:45,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:45,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:24:45,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:45,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:24:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:45,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:45,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:45,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:45,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:24:45,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:24:45,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 01:24:45,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:45,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:24:45,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:45,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:24:45,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:45,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:45,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:45,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:45,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:45,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:45,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:24:45,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:24:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:24:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:45,908 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 01:24:45,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343802470] [2020-10-27 01:24:45,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:24:45,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 01:24:45,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108554938] [2020-10-27 01:24:45,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 01:24:45,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:24:45,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 01:24:45,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:24:45,914 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 15 states. [2020-10-27 01:24:46,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:24:46,412 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2020-10-27 01:24:46,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 01:24:46,413 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-27 01:24:46,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:24:46,414 INFO L225 Difference]: With dead ends: 71 [2020-10-27 01:24:46,414 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 01:24:46,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2020-10-27 01:24:46,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 01:24:46,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-10-27 01:24:46,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 01:24:46,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-27 01:24:46,426 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 52 [2020-10-27 01:24:46,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:24:46,426 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-27 01:24:46,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 01:24:46,427 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-27 01:24:46,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 01:24:46,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:24:46,428 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:24:46,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:24:46,428 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:24:46,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:24:46,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1038390955, now seen corresponding path program 1 times [2020-10-27 01:24:46,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:24:46,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977574176] [2020-10-27 01:24:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:24:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:46,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:48,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:51,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:51,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:51,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 01:24:51,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:24:51,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5242 [2020-10-27 01:24:51,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 01:24:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:24:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 01:24:51,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:52,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:24:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:52,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:52,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:52,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:24:52,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:52,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:24:52,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:52,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:24:52,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:52,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:24:52,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:52,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:24:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:52,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:52,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:52,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:24:52,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:52,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-27 01:24:52,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 01:24:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:24:52,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:52,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:24:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:52,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:52,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:52,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:52,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:52,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 01:24:52,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:24:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:24:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:24:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:52,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:24:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:52,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:52,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:52,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:24:52,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:52,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 01:24:52,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:52,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:24:52,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:52,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:24:52,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:53,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:24:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:24:53,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:24:53,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:24:53,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:24:53,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:24:53,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-27 01:24:53,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:24:53,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:24:53,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:24:53,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:24:53,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:24:54,007 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-10-27 01:24:54,572 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2020-10-27 01:24:55,303 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 94 [2020-10-27 01:25:05,657 WARN L193 SmtUtils]: Spent 8.91 s on a formula simplification. DAG size of input: 145 DAG size of output: 132 [2020-10-27 01:25:07,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:25:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:07,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:07,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:07,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:07,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:07,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 01:25:07,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:07,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:25:07,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:07,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:07,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:08,025 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-27 01:25:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:25:08,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977574176] [2020-10-27 01:25:08,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:25:08,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 01:25:08,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606572118] [2020-10-27 01:25:08,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 01:25:08,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:25:08,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 01:25:08,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=753, Unknown=0, NotChecked=0, Total=812 [2020-10-27 01:25:08,087 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 29 states. [2020-10-27 01:25:08,973 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 01:25:11,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:25:11,976 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-10-27 01:25:11,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 01:25:11,977 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 54 [2020-10-27 01:25:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:25:11,980 INFO L225 Difference]: With dead ends: 77 [2020-10-27 01:25:11,981 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 01:25:11,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=126, Invalid=1514, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 01:25:11,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 01:25:11,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2020-10-27 01:25:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-27 01:25:11,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-10-27 01:25:11,996 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 54 [2020-10-27 01:25:11,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:25:11,997 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-10-27 01:25:11,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 01:25:11,997 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-10-27 01:25:11,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 01:25:11,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:25:11,999 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:25:11,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:25:11,999 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:25:11,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:25:11,999 INFO L82 PathProgramCache]: Analyzing trace with hash 2098815750, now seen corresponding path program 1 times [2020-10-27 01:25:12,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:25:12,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302394985] [2020-10-27 01:25:12,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:25:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:12,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:12,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:12,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:12,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:14,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:17,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:17,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 01:25:17,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:25:17,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 01:25:17,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 01:25:17,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:25:17,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 01:25:17,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:17,568 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2020-10-27 01:25:18,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:25:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:18,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:18,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:25:18,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:18,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:25:18,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:18,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:25:18,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:18,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:25:18,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:18,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:25:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:18,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:18,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:18,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:25:18,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:18,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 01:25:18,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:25:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:25:18,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:18,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:25:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:18,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:18,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:18,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:18,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:18,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:25:18,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:18,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:25:18,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:18,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:25:18,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:18,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:25:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:18,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:18,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:18,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:18,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:18,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 01:25:18,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:25:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:25:18,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:18,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 01:25:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:18,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:18,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:18,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:25:18,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:18,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-27 01:25:18,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:18,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:25:18,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:18,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:25:18,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:19,178 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-27 01:25:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:25:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:19,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:19,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:19,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:19,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 01:25:19,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:19,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:25:19,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:19,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:19,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:25:19,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302394985] [2020-10-27 01:25:19,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:25:19,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 01:25:19,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502598630] [2020-10-27 01:25:19,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 01:25:19,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:25:19,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 01:25:19,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-10-27 01:25:19,579 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 25 states. [2020-10-27 01:25:21,728 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-27 01:25:21,940 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-27 01:25:22,206 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-27 01:25:22,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:25:22,659 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2020-10-27 01:25:22,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 01:25:22,659 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2020-10-27 01:25:22,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:25:22,661 INFO L225 Difference]: With dead ends: 78 [2020-10-27 01:25:22,661 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 01:25:22,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 01:25:22,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 01:25:22,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2020-10-27 01:25:22,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 01:25:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-10-27 01:25:22,677 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 57 [2020-10-27 01:25:22,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:25:22,678 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-10-27 01:25:22,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 01:25:22,678 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-10-27 01:25:22,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 01:25:22,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:25:22,680 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:25:22,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:25:22,680 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:25:22,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:25:22,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1891812189, now seen corresponding path program 2 times [2020-10-27 01:25:22,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:25:22,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226317986] [2020-10-27 01:25:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:25:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:22,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:22,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:26,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:27,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:27,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 01:25:27,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:25:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:25:27,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-27 01:25:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:25:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 01:25:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:28,003 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-27 01:25:28,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:25:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:28,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:28,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:28,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:25:28,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:28,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:25:28,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:25:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:25:28,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:28,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:25:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:28,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:28,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:28,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 01:25:28,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:28,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-10-27 01:25:28,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 01:25:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 01:25:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:29,572 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-27 01:25:29,876 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-10-27 01:25:30,087 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-10-27 01:25:30,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:25:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:30,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:30,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:30,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:30,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:30,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 01:25:30,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:25:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:25:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:25:30,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:30,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:25:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:30,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:30,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:30,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:30,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:30,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:25:30,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:25:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:30,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:30,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:25:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:30,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:30,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:30,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:25:30,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:30,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 01:25:30,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:25:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:25:30,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:31,309 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-27 01:25:31,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 01:25:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:25:31,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:25:31,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:25:31,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:25:31,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:25:31,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-27 01:25:31,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:25:31,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:25:31,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:25:31,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:25:31,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:25:36,673 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-27 01:25:37,036 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-27 01:25:37,975 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 79 [2020-10-27 01:27:51,260 WARN L193 SmtUtils]: Spent 2.13 m on a formula simplification. DAG size of input: 600 DAG size of output: 376 [2020-10-27 01:27:57,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:27:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:27:57,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:27:57,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:27:57,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:27:57,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:27:57,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 01:27:57,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:27:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:27:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:27:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:27:57,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:27:58,757 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-27 01:27:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:27:58,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226317986] [2020-10-27 01:27:58,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:27:58,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 01:27:58,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009087700] [2020-10-27 01:27:58,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 01:27:58,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:27:58,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 01:27:58,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1039, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 01:27:58,865 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 34 states.