/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/dll2c_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:21:19,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:21:19,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:21:19,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:21:19,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:21:19,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:21:19,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:21:19,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:21:19,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:21:19,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:21:19,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:21:19,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:21:19,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:21:19,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:21:19,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:21:19,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:21:19,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:21:19,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:21:19,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:21:19,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:21:19,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:21:19,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:21:19,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:21:19,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:21:19,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:21:19,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:21:19,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:21:19,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:21:19,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:21:19,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:21:19,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:21:19,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:21:19,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:21:19,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:21:19,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:21:19,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:21:19,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:21:19,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:21:19,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:21:19,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:21:19,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:21:19,401 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 01:21:19,443 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:21:19,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:21:19,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:21:19,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:21:19,445 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:21:19,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:21:19,446 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:21:19,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:21:19,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:21:19,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:21:19,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:21:19,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:21:19,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:21:19,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:21:19,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:21:19,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:21:19,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:21:19,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:21:19,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:21:19,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:21:19,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:21:19,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:21:19,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:21:19,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:21:19,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:21:19,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:21:19,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:21:19,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:21:19,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:21:19,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:21:19,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:21:19,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:21:19,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:21:19,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:21:19,842 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:21:19,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_prepend_unequal.i [2020-10-27 01:21:19,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66d8ba930/7a63250aaa984fcc99b416984069761b/FLAGe522528ef [2020-10-27 01:21:20,618 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:21:20,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_prepend_unequal.i [2020-10-27 01:21:20,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66d8ba930/7a63250aaa984fcc99b416984069761b/FLAGe522528ef [2020-10-27 01:21:20,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66d8ba930/7a63250aaa984fcc99b416984069761b [2020-10-27 01:21:20,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:21:20,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:21:20,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:21:20,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:21:20,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:21:20,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:21:20" (1/1) ... [2020-10-27 01:21:20,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ee21349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:21:20, skipping insertion in model container [2020-10-27 01:21:20,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:21:20" (1/1) ... [2020-10-27 01:21:20,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:21:20,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:21:21,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:21:21,437 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:21:21,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:21:21,607 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:21:21,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:21:21 WrapperNode [2020-10-27 01:21:21,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:21:21,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:21:21,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:21:21,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:21:21,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:21:21" (1/1) ... [2020-10-27 01:21:21,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:21:21" (1/1) ... [2020-10-27 01:21:21,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:21:21" (1/1) ... [2020-10-27 01:21:21,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:21:21" (1/1) ... [2020-10-27 01:21:21,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:21:21" (1/1) ... [2020-10-27 01:21:21,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:21:21" (1/1) ... [2020-10-27 01:21:21,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:21:21" (1/1) ... [2020-10-27 01:21:21,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:21:21,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:21:21,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:21:21,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:21:21,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:21:21" (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 01:21:21,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:21:21,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:21:21,824 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:21:21,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 01:21:21,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 01:21:21,825 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 01:21:21,825 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-27 01:21:21,825 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-27 01:21:21,825 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2020-10-27 01:21:21,825 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_prepend [2020-10-27 01:21:21,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:21:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:21:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:21:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:21:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:21:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:21:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:21:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 01:21:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 01:21:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 01:21:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 01:21:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 01:21:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 01:21:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 01:21:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 01:21:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 01:21:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 01:21:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 01:21:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 01:21:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 01:21:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 01:21:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 01:21:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 01:21:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 01:21:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 01:21:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 01:21:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 01:21:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 01:21:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 01:21:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 01:21:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 01:21:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 01:21:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 01:21:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 01:21:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 01:21:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 01:21:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 01:21:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 01:21:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 01:21:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 01:21:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 01:21:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 01:21:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 01:21:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 01:21:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 01:21:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 01:21:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 01:21:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 01:21:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 01:21:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 01:21:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 01:21:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 01:21:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 01:21:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 01:21:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 01:21:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 01:21:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 01:21:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 01:21:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 01:21:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:21:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:21:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:21:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:21:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 01:21:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 01:21:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:21:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 01:21:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 01:21:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 01:21:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 01:21:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 01:21:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 01:21:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 01:21:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 01:21:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 01:21:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 01:21:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 01:21:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 01:21:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 01:21:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 01:21:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 01:21:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 01:21:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 01:21:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 01:21:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 01:21:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 01:21:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 01:21:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 01:21:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 01:21:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 01:21:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 01:21:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 01:21:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 01:21:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 01:21:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 01:21:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 01:21:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 01:21:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 01:21:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 01:21:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 01:21:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 01:21:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 01:21:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 01:21:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 01:21:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 01:21:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 01:21:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 01:21:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 01:21:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 01:21:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 01:21:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 01:21:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 01:21:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-27 01:21:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:21:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:21:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:21:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-27 01:21:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2020-10-27 01:21:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:21:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:21:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_prepend [2020-10-27 01:21:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:21:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 01:21:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:21:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:21:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:21:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:21:22,283 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 01:21:22,522 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:21:22,522 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 01:21:22,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:21:22 BoogieIcfgContainer [2020-10-27 01:21:22,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:21:22,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:21:22,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:21:22,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:21:22,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:21:20" (1/3) ... [2020-10-27 01:21:22,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a139ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:21:22, skipping insertion in model container [2020-10-27 01:21:22,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:21:21" (2/3) ... [2020-10-27 01:21:22,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a139ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:21:22, skipping insertion in model container [2020-10-27 01:21:22,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:21:22" (3/3) ... [2020-10-27 01:21:22,533 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_prepend_unequal.i [2020-10-27 01:21:22,545 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:21:22,550 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:21:22,563 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:21:22,590 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:21:22,591 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:21:22,591 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:21:22,591 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:21:22,591 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:21:22,591 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:21:22,591 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:21:22,592 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:21:22,611 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-27 01:21:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 01:21:22,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:21:22,619 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] [2020-10-27 01:21:22,620 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:21:22,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:21:22,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1314255548, now seen corresponding path program 1 times [2020-10-27 01:21:22,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:21:22,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619699679] [2020-10-27 01:21:22,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:21:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:22,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:23,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:23,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:24,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:27,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:27,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 01:21:27,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:21:27,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 01:21:27,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:27,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:21:27,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:21:27,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:21:27,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:21:27,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:21:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:27,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:27,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:27,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:21:27,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:27,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:21:27,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:27,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:21:27,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:21:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:21:27,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:21:27,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:21:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:28,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:28,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:21:28,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:28,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 01:21:28,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:21:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:21:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:21:28,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:28,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:21:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:28,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:28,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:28,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:21:28,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:28,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 01:21:28,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:28,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:21:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:21:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:21:28,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:28,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:21:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:28,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:28,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:21:28,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:28,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:21:28,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:21:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 01:21:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:21:28,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:28,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:21:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:28,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:28,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:28,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:21:28,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 01:21:28,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:28,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:21:28,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:21:28,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:21:28,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:21:28,243 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 01:21:28,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619699679] [2020-10-27 01:21:28,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:21:28,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 01:21:28,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366723811] [2020-10-27 01:21:28,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:21:28,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:21:28,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:21:28,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:21:28,272 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 7 states. [2020-10-27 01:21:28,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:21:28,719 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2020-10-27 01:21:28,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:21:28,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-27 01:21:28,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:21:28,730 INFO L225 Difference]: With dead ends: 114 [2020-10-27 01:21:28,731 INFO L226 Difference]: Without dead ends: 47 [2020-10-27 01:21:28,735 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 01:21:28,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-27 01:21:28,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2020-10-27 01:21:28,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 01:21:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-27 01:21:28,784 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 37 [2020-10-27 01:21:28,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:21:28,785 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-27 01:21:28,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:21:28,785 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-27 01:21:28,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 01:21:28,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:21:28,788 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] [2020-10-27 01:21:28,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:21:28,789 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:21:28,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:21:28,790 INFO L82 PathProgramCache]: Analyzing trace with hash 181676968, now seen corresponding path program 1 times [2020-10-27 01:21:28,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:21:28,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823595594] [2020-10-27 01:21:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:21:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:28,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:28,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:30,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:33,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:33,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 01:21:33,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:21:33,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 01:21:33,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:33,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 01:21:33,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:21:33,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 01:21:33,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:33,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:21:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:33,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:33,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:21:33,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:33,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:21:33,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:21:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:21:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:21:33,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:21:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:34,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:34,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:34,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 01:21:34,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:21:34,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-27 01:21:34,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:21:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:21:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 01:21:34,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:34,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:21:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:34,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:34,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:34,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:21:34,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:34,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:21:34,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:34,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:21:34,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:21:34,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:21:34,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:34,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:21:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:34,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:34,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:34,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:34,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:21:34,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:21:34,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:21:34,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:34,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:21:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:21:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:21:34,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:34,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:21:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:34,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:34,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:34,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:21:34,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:34,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 01:21:34,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:34,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:21:34,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:21:34,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:21:34,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:34,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:21:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:34,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:34,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:34,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:21:34,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:34,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 01:21:34,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:21:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:21:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:21:34,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 01:21:34,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823595594] [2020-10-27 01:21:34,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:21:34,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 01:21:34,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651437348] [2020-10-27 01:21:34,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 01:21:34,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:21:34,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 01:21:34,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:21:34,981 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 19 states. [2020-10-27 01:21:36,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:21:36,932 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2020-10-27 01:21:36,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 01:21:36,933 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-10-27 01:21:36,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:21:36,935 INFO L225 Difference]: With dead ends: 81 [2020-10-27 01:21:36,935 INFO L226 Difference]: Without dead ends: 47 [2020-10-27 01:21:36,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2020-10-27 01:21:36,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-27 01:21:36,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-27 01:21:36,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 01:21:36,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-10-27 01:21:36,948 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 47 [2020-10-27 01:21:36,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:21:36,948 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-10-27 01:21:36,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 01:21:36,949 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-10-27 01:21:36,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 01:21:36,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:21:36,951 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] [2020-10-27 01:21:36,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:21:36,951 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:21:36,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:21:36,952 INFO L82 PathProgramCache]: Analyzing trace with hash -627669658, now seen corresponding path program 1 times [2020-10-27 01:21:36,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:21:36,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059391518] [2020-10-27 01:21:36,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:21:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:37,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:40,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:40,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 01:21:40,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:40,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3599 [2020-10-27 01:21:40,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 01:21:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:21:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 01:21:40,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:40,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:21:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:40,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:40,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:40,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:21:40,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:40,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:21:40,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:40,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:21:40,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:21:40,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:21:40,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:40,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:21:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:40,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:41,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:41,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 01:21:41,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:41,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-27 01:21:41,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:41,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:21:41,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:21:41,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 01:21:41,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:41,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:21:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:41,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:41,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:41,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:21:41,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:41,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:21:41,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:21:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:21:41,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:21:41,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:41,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:21:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:41,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:41,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:41,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:21:41,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:41,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:21:41,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:41,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:21:41,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:21:41,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:21:41,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:41,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:21:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:41,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:42,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:42,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:21:42,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:42,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-27 01:21:42,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:21:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:21:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:21:42,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:42,344 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-27 01:21:42,532 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-27 01:21:42,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:21:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:42,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:42,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:42,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:21:42,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:42,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 01:21:42,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:42,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:21:42,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:21:42,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:21:42,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:21:42,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059391518] [2020-10-27 01:21:42,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:21:42,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 01:21:42,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031690985] [2020-10-27 01:21:42,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 01:21:42,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:21:42,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 01:21:42,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2020-10-27 01:21:42,937 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 25 states. [2020-10-27 01:21:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:21:44,275 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2020-10-27 01:21:44,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 01:21:44,276 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 47 [2020-10-27 01:21:44,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:21:44,278 INFO L225 Difference]: With dead ends: 50 [2020-10-27 01:21:44,279 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 01:21:44,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 01:21:44,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 01:21:44,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-27 01:21:44,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 01:21:44,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-10-27 01:21:44,289 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 47 [2020-10-27 01:21:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:21:44,290 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-10-27 01:21:44,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 01:21:44,290 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-10-27 01:21:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 01:21:44,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:21:44,292 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] [2020-10-27 01:21:44,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:21:44,292 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:21:44,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:21:44,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1904105119, now seen corresponding path program 1 times [2020-10-27 01:21:44,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:21:44,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726993020] [2020-10-27 01:21:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:21:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:44,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:49,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:49,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 01:21:49,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:49,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 01:21:49,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 01:21:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:21:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 01:21:49,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:49,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:21:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:49,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:49,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:49,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:21:49,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:49,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:21:49,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:49,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:21:49,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:21:49,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:21:49,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:49,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:21:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:49,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:50,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:50,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 01:21:50,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:50,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-10-27 01:21:50,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:50,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 01:21:50,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:21:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:21:50,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:50,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:21:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:50,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:50,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:50,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:21:50,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:50,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 01:21:50,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:50,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:21:50,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:21:50,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:21:50,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:50,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:21:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:50,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:50,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:50,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:21:50,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:50,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 01:21:50,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:50,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:21:50,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:21:50,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:21:50,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:51,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:21:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:51,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:51,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:51,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:21:51,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:51,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-27 01:21:51,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:21:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:21:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:21:51,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:52,021 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-10-27 01:21:52,368 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2020-10-27 01:21:52,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:21:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:52,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:21:52,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:21:52,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:21:52,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:21:52,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 01:21:52,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:21:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:21:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:21:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:21:52,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:21:52,980 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-10-27 01:21:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:21:53,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726993020] [2020-10-27 01:21:53,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:21:53,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 01:21:53,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838692969] [2020-10-27 01:21:53,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 01:21:53,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:21:53,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 01:21:53,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2020-10-27 01:21:53,011 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 29 states. [2020-10-27 01:21:53,674 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-27 01:21:55,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:21:55,540 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2020-10-27 01:21:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 01:21:55,541 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 49 [2020-10-27 01:21:55,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:21:55,543 INFO L225 Difference]: With dead ends: 69 [2020-10-27 01:21:55,544 INFO L226 Difference]: Without dead ends: 65 [2020-10-27 01:21:55,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 01:21:55,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-27 01:21:55,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2020-10-27 01:21:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-27 01:21:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2020-10-27 01:21:55,558 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 49 [2020-10-27 01:21:55,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:21:55,558 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-10-27 01:21:55,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 01:21:55,559 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2020-10-27 01:21:55,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 01:21:55,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:21:55,560 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 01:21:55,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:21:55,561 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:21:55,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:21:55,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1635731669, now seen corresponding path program 1 times [2020-10-27 01:21:55,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:21:55,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851799216] [2020-10-27 01:21:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:21:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:21:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:00,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:00,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:00,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 01:22:00,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:22:00,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 01:22:00,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:00,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 01:22:00,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:22:00,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 01:22:00,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:01,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:22:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:01,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:01,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:01,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:22:01,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:01,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:22:01,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:01,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:22:01,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:01,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:22:01,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:01,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:22:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:01,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:01,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:01,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 01:22:01,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:01,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-27 01:22:01,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 01:22:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 01:22:01,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:02,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:22:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:02,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:02,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:02,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:02,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:02,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 01:22:02,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:22:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:22:02,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:02,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:22:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:02,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:02,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:02,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:02,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:02,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 01:22:02,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:02,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:22:02,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:22:02,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:22:02,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:02,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:22:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:02,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:03,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:03,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:22:03,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:03,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-27 01:22:03,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:03,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:22:03,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:22:03,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:22:03,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:03,592 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-27 01:22:04,825 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 146 [2020-10-27 01:22:04,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:22:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:04,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:04,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:04,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:04,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:04,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 01:22:04,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:04,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:22:04,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:22:04,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:22:04,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:05,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:22:05,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851799216] [2020-10-27 01:22:05,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:22:05,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 01:22:05,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268103496] [2020-10-27 01:22:05,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 01:22:05,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:22:05,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 01:22:05,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=747, Unknown=0, NotChecked=0, Total=812 [2020-10-27 01:22:05,198 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 29 states. [2020-10-27 01:22:05,936 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-27 01:22:09,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:22:09,412 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2020-10-27 01:22:09,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 01:22:09,413 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 52 [2020-10-27 01:22:09,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:22:09,415 INFO L225 Difference]: With dead ends: 75 [2020-10-27 01:22:09,415 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 01:22:09,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=162, Invalid=1908, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 01:22:09,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 01:22:09,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2020-10-27 01:22:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 01:22:09,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2020-10-27 01:22:09,441 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 52 [2020-10-27 01:22:09,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:22:09,442 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2020-10-27 01:22:09,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 01:22:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2020-10-27 01:22:09,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 01:22:09,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:22:09,449 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, 1] [2020-10-27 01:22:09,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:22:09,450 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:22:09,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:22:09,450 INFO L82 PathProgramCache]: Analyzing trace with hash 870577207, now seen corresponding path program 1 times [2020-10-27 01:22:09,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:22:09,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176258888] [2020-10-27 01:22:09,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:22:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:09,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:11,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:14,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:14,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 01:22:14,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:22:14,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 01:22:14,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 01:22:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:22:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 01:22:14,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:14,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:22:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:14,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:14,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:14,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:22:14,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:14,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:22:14,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:14,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:22:14,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:14,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:22:14,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:14,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:22:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:15,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:15,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 01:22:15,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:15,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-27 01:22:15,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 01:22:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:22:15,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:15,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:22:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:15,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:15,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:15,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:15,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:15,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 01:22:15,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:15,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:22:15,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:22:15,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:15,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:22:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:15,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:15,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:15,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:15,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:15,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 01:22:15,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:22:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:22:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:22:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:16,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:22:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:16,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:16,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:16,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:22:16,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:16,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-27 01:22:16,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:16,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:22:16,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:22:16,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:22:16,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:17,246 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2020-10-27 01:22:17,848 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2020-10-27 01:22:18,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:22:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:18,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:18,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:18,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:18,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:18,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 01:22:18,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:18,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:22:18,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:22:18,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:22:18,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:18,543 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-27 01:22:18,573 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:22:18,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176258888] [2020-10-27 01:22:18,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:22:18,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 01:22:18,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341729976] [2020-10-27 01:22:18,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 01:22:18,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:22:18,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 01:22:18,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=809, Unknown=0, NotChecked=0, Total=870 [2020-10-27 01:22:18,576 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 30 states. [2020-10-27 01:22:19,354 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-10-27 01:22:22,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:22:22,185 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-10-27 01:22:22,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 01:22:22,186 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 53 [2020-10-27 01:22:22,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:22:22,191 INFO L225 Difference]: With dead ends: 73 [2020-10-27 01:22:22,192 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 01:22:22,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=151, Invalid=1919, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 01:22:22,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 01:22:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2020-10-27 01:22:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 01:22:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2020-10-27 01:22:22,212 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 53 [2020-10-27 01:22:22,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:22:22,217 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2020-10-27 01:22:22,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 01:22:22,217 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2020-10-27 01:22:22,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 01:22:22,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:22:22,220 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:22:22,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:22:22,221 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:22:22,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:22:22,222 INFO L82 PathProgramCache]: Analyzing trace with hash 137748557, now seen corresponding path program 2 times [2020-10-27 01:22:22,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:22:22,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353027890] [2020-10-27 01:22:22,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:22:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:22,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:22,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:27,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:27,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 01:22:27,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:22:27,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 01:22:27,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-27 01:22:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:22:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 01:22:27,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:27,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:22:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:27,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:27,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:27,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:22:27,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:27,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:22:27,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:27,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:22:27,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:27,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:22:27,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:27,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:22:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:27,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:28,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:28,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 01:22:28,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:28,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-10-27 01:22:28,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 01:22:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:28,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 01:22:28,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:29,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:22:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:29,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:29,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:29,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:29,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:29,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 01:22:29,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:22:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:22:29,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:29,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:22:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:29,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:29,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:29,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:29,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:29,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:22:29,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:22:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:22:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:22:29,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:29,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:22:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:29,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:29,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:29,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:29,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:29,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 01:22:29,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:29,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:22:29,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:22:29,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:22:29,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:29,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:22:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:29,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:29,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:29,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:22:29,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:29,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-27 01:22:29,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:29,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:22:29,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:22:29,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:22:29,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:30,369 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-10-27 01:22:30,882 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2020-10-27 01:22:31,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:22:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:31,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:31,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:31,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:31,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 01:22:31,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:31,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:22:31,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:22:31,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:22:31,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:31,436 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2020-10-27 01:22:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:22:31,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353027890] [2020-10-27 01:22:31,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:22:31,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 01:22:31,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036059054] [2020-10-27 01:22:31,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 01:22:31,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:22:31,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 01:22:31,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 01:22:31,471 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand 34 states. [2020-10-27 01:22:32,135 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-27 01:22:32,936 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-27 01:22:33,383 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-27 01:22:35,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:22:35,042 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2020-10-27 01:22:35,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 01:22:35,043 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 59 [2020-10-27 01:22:35,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:22:35,044 INFO L225 Difference]: With dead ends: 67 [2020-10-27 01:22:35,045 INFO L226 Difference]: Without dead ends: 63 [2020-10-27 01:22:35,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=191, Invalid=2161, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 01:22:35,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-27 01:22:35,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-27 01:22:35,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 01:22:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2020-10-27 01:22:35,072 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 59 [2020-10-27 01:22:35,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:22:35,073 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2020-10-27 01:22:35,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 01:22:35,073 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2020-10-27 01:22:35,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 01:22:35,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:22:35,075 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:22:35,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:22:35,076 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:22:35,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:22:35,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2015136619, now seen corresponding path program 1 times [2020-10-27 01:22:35,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:22:35,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294791650] [2020-10-27 01:22:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:22:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:35,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:35,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:35,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:35,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 01:22:35,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:22:35,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-10-27 01:22:35,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:22:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:22:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 01:22:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:35,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:22:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:35,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:36,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:36,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:22:36,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:36,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:22:36,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:36,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:22:36,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:36,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:22:36,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:36,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:22:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:36,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:36,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:36,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:36,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 01:22:36,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:22:36,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 01:22:36,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:36,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:22:36,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:36,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:22:36,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:36,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:22:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:36,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:36,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:36,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:36,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:22:36,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:22:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:22:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:36,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:22:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:36,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:36,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:36,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:36,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:22:36,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:22:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:22:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:36,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:22:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:36,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:36,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:36,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:22:36,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:36,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:22:36,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:36,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:22:36,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:36,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:22:36,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:36,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:22:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:36,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:36,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:36,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:36,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:36,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:22:36,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:22:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:22:36,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 01:22:36,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294791650] [2020-10-27 01:22:36,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:22:36,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 01:22:36,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401511167] [2020-10-27 01:22:36,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:22:36,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:22:36,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:22:36,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:22:36,290 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand 12 states. [2020-10-27 01:22:36,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:22:36,783 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-10-27 01:22:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 01:22:36,783 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2020-10-27 01:22:36,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:22:36,785 INFO L225 Difference]: With dead ends: 79 [2020-10-27 01:22:36,785 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 01:22:36,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:22:36,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 01:22:36,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-10-27 01:22:36,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 01:22:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-10-27 01:22:36,802 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 56 [2020-10-27 01:22:36,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:22:36,802 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-10-27 01:22:36,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:22:36,802 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-10-27 01:22:36,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 01:22:36,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:22:36,805 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:22:36,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:22:36,805 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:22:36,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:22:36,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1993925645, now seen corresponding path program 2 times [2020-10-27 01:22:36,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:22:36,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354449243] [2020-10-27 01:22:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:22:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:36,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:37,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:40,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:41,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:41,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 01:22:41,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:22:41,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 01:22:41,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 01:22:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:22:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 01:22:41,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:42,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:22:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:42,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:42,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:22:42,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:42,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:22:42,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:22:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:22:42,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:42,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:22:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:42,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:42,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:42,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 01:22:42,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:42,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-27 01:22:42,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:42,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:22:42,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:42,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 01:22:42,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:43,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:22:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:43,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:43,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:43,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:43,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:43,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:22:43,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:22:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:22:43,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:43,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:22:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:43,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:43,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:43,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:43,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:22:43,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:22:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:22:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:43,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:22:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:43,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:43,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:43,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:22:43,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:43,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-27 01:22:43,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:22:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:22:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:22:43,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:44,212 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-10-27 01:22:44,566 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-27 01:22:44,798 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-27 01:22:44,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:22:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:44,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:44,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:44,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:44,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:44,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 01:22:44,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:22:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:22:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:22:44,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:22:45,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354449243] [2020-10-27 01:22:45,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:22:45,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 01:22:45,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163726031] [2020-10-27 01:22:45,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 01:22:45,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:22:45,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 01:22:45,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2020-10-27 01:22:45,154 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 32 states. [2020-10-27 01:22:48,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:22:48,877 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-10-27 01:22:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 01:22:48,881 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 57 [2020-10-27 01:22:48,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:22:48,884 INFO L225 Difference]: With dead ends: 81 [2020-10-27 01:22:48,884 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 01:22:48,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=172, Invalid=1990, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 01:22:48,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 01:22:48,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-27 01:22:48,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 01:22:48,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-10-27 01:22:48,897 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 57 [2020-10-27 01:22:48,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:22:48,897 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-10-27 01:22:48,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 01:22:48,897 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-10-27 01:22:48,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 01:22:48,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:22:48,899 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:22:48,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:22:48,899 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:22:48,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:22:48,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1900284095, now seen corresponding path program 2 times [2020-10-27 01:22:48,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:22:48,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612126043] [2020-10-27 01:22:48,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:22:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:48,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:49,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:52,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:55,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:55,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 01:22:55,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:22:55,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6209 [2020-10-27 01:22:55,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-27 01:22:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:22:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 01:22:55,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:55,417 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 55 [2020-10-27 01:22:55,600 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 56 [2020-10-27 01:22:55,768 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 48 [2020-10-27 01:22:55,912 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2020-10-27 01:22:56,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:22:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:56,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:56,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:56,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:22:56,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:56,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:22:56,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:56,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:22:56,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:56,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:22:56,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:56,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:22:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:56,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:57,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:57,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 01:22:57,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:57,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1647 [2020-10-27 01:22:57,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 01:22:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 01:22:57,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:58,212 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-27 01:22:58,663 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-10-27 01:22:58,901 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2020-10-27 01:22:59,091 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-10-27 01:22:59,303 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-10-27 01:22:59,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:22:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:59,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:59,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:59,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:59,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:59,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:22:59,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:59,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:22:59,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:22:59,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:22:59,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:59,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:22:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:59,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:59,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:59,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:59,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:59,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 01:22:59,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:22:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:22:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:22:59,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:22:59,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:22:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:22:59,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:22:59,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:22:59,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:22:59,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:22:59,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 01:22:59,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:22:59,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:22:59,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:22:59,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:22:59,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:23:00,501 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-27 01:23:00,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:23:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:00,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:01,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:01,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:23:01,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:01,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-27 01:23:01,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:23:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:23:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:23:01,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:23:02,167 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2020-10-27 01:23:03,800 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 184 DAG size of output: 170 [2020-10-27 01:23:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:23:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:03,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:03,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:03,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:23:03,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:03,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 01:23:03,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:23:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:23:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:23:03,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:23:04,660 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 42 [2020-10-27 01:23:04,704 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:23:04,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612126043] [2020-10-27 01:23:04,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:23:04,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 01:23:04,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652431366] [2020-10-27 01:23:04,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 01:23:04,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:23:04,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 01:23:04,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1102, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 01:23:04,707 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 35 states. [2020-10-27 01:23:05,773 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2020-10-27 01:23:06,979 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-27 01:23:07,368 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 01:23:08,013 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 48 [2020-10-27 01:23:09,495 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-27 01:23:09,727 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 71 [2020-10-27 01:23:09,983 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-27 01:23:10,371 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-27 01:23:10,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:23:10,809 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2020-10-27 01:23:10,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 01:23:10,810 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 62 [2020-10-27 01:23:10,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:23:10,812 INFO L225 Difference]: With dead ends: 89 [2020-10-27 01:23:10,812 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 01:23:10,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=200, Invalid=2556, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 01:23:10,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 01:23:10,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2020-10-27 01:23:10,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 01:23:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2020-10-27 01:23:10,826 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 62 [2020-10-27 01:23:10,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:23:10,827 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2020-10-27 01:23:10,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 01:23:10,827 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2020-10-27 01:23:10,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 01:23:10,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:23:10,829 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:23:10,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:23:10,829 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:23:10,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:23:10,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1182083805, now seen corresponding path program 3 times [2020-10-27 01:23:10,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:23:10,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582314649] [2020-10-27 01:23:10,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:23:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:10,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:11,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:13,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:15,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:15,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 01:23:15,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:23:15,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 01:23:15,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-27 01:23:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:23:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 01:23:15,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:23:16,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:23:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:16,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:16,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:16,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:23:16,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:16,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:23:16,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:23:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:23:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:23:16,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:23:16,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:23:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:16,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:17,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:17,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 01:23:17,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:17,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-10-27 01:23:17,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:17,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 01:23:17,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:23:17,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 01:23:17,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:23:17,651 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2020-10-27 01:23:18,136 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-27 01:23:18,353 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-10-27 01:23:18,698 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-10-27 01:23:18,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:23:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:18,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:18,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:23:18,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 01:23:18,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:23:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:23:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:23:18,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:23:18,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:23:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:18,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:19,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:19,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:23:19,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:19,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 01:23:19,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:23:19,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:23:19,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:23:19,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:23:19,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:23:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:19,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:19,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:19,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:23:19,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:19,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 01:23:19,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:23:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:23:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:23:19,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:23:19,778 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-27 01:23:19,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:23:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:19,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:20,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:20,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:23:20,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:20,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-27 01:23:20,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:20,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:23:20,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:23:20,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:23:20,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:23:20,964 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2020-10-27 01:23:21,470 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 68 [2020-10-27 01:23:23,208 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2020-10-27 01:23:23,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:23:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:23,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:23,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:23,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:23:23,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:23,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 01:23:23,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:23,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:23:23,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:23:23,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:23:23,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:23:24,428 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 39 [2020-10-27 01:23:24,503 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:23:24,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582314649] [2020-10-27 01:23:24,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:23:24,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 01:23:24,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543469241] [2020-10-27 01:23:24,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 01:23:24,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:23:24,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 01:23:24,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1181, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 01:23:24,506 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand 36 states. [2020-10-27 01:23:25,310 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2020-10-27 01:23:26,103 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-27 01:23:26,372 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-27 01:23:26,791 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-10-27 01:23:27,470 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 124 [2020-10-27 01:23:28,517 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-10-27 01:23:29,012 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-10-27 01:23:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:23:31,567 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-10-27 01:23:31,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 01:23:31,568 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 63 [2020-10-27 01:23:31,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:23:31,569 INFO L225 Difference]: With dead ends: 78 [2020-10-27 01:23:31,569 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 01:23:31,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=193, Invalid=2563, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 01:23:31,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 01:23:31,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-27 01:23:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 01:23:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-10-27 01:23:31,586 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 63 [2020-10-27 01:23:31,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:23:31,586 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-10-27 01:23:31,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 01:23:31,586 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-10-27 01:23:31,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 01:23:31,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:23:31,587 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:23:31,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 01:23:31,588 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:23:31,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:23:31,588 INFO L82 PathProgramCache]: Analyzing trace with hash 453865209, now seen corresponding path program 4 times [2020-10-27 01:23:31,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:23:31,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740335134] [2020-10-27 01:23:31,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:23:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:31,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:32,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:35,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:38,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:38,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 01:23:38,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:23:38,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7337 [2020-10-27 01:23:38,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:23:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:23:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:23:38,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:23:38,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:23:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:38,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:38,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:38,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:23:38,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:38,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:23:38,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:23:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:23:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:23:38,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:23:39,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:23:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:39,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:39,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:39,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 01:23:39,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:39,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 01:23:39,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:23:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:23:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 01:23:39,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:23:39,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:23:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:39,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:39,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:39,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:23:39,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:39,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 01:23:39,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:39,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:23:39,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:23:39,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:23:39,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:23:39,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 01:23:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:39,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:39,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:23:39,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:39,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:23:39,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:23:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:23:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:23:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:23:39,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:23:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:39,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:39,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:39,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:23:39,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:39,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:23:39,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:23:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:23:39,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:23:39,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:23:39,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:23:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:39,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:39,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:39,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:23:39,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:39,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 01:23:39,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:23:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 01:23:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:23:39,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:23:39,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:23:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:23:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:23:39,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:23:39,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:23:39,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:23:39,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:23:39,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:23:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:23:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:23:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:23:39,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:23:39,376 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-27 01:23:39,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740335134] [2020-10-27 01:23:39,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:23:39,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 01:23:39,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602750854] [2020-10-27 01:23:39,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:23:39,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:23:39,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:23:39,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:23:39,378 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 8 states. [2020-10-27 01:23:39,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:23:39,610 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2020-10-27 01:23:39,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:23:39,611 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-27 01:23:39,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:23:39,611 INFO L225 Difference]: With dead ends: 77 [2020-10-27 01:23:39,611 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 01:23:39,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:23:39,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 01:23:39,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 01:23:39,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 01:23:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 01:23:39,613 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2020-10-27 01:23:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:23:39,613 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 01:23:39,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:23:39,613 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 01:23:39,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 01:23:39,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 01:23:39,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 01:23:39,760 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 177 [2020-10-27 01:23:40,594 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 73 [2020-10-27 01:23:42,199 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 169 DAG size of output: 125 [2020-10-27 01:23:42,638 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2020-10-27 01:23:42,844 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2020-10-27 01:23:43,020 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-27 01:23:43,025 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-27 01:23:43,026 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-27 01:23:43,026 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-27 01:23:43,026 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-27 01:23:43,026 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-27 01:23:43,026 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:23:43,027 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |old(#t~string1.offset)| |#t~string1.offset|) (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 01:23:43,027 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:23:43,027 INFO L277 CegarLoopResult]: At program point myexitENTRY(lines 572 574) the Hoare annotation is: true [2020-10-27 01:23:43,027 INFO L277 CegarLoopResult]: At program point L573(line 573) the Hoare annotation is: true [2020-10-27 01:23:43,027 INFO L274 CegarLoopResult]: For program point myexitEXIT(lines 572 574) no Hoare annotation was computed. [2020-10-27 01:23:43,027 INFO L274 CegarLoopResult]: For program point L602(lines 602 610) no Hoare annotation was computed. [2020-10-27 01:23:43,027 INFO L277 CegarLoopResult]: At program point L604-2(lines 604 608) the Hoare annotation is: true [2020-10-27 01:23:43,027 INFO L274 CegarLoopResult]: For program point L604-3(lines 604 608) no Hoare annotation was computed. [2020-10-27 01:23:43,027 INFO L274 CegarLoopResult]: For program point L602-2(lines 601 611) no Hoare annotation was computed. [2020-10-27 01:23:43,028 INFO L270 CegarLoopResult]: At program point dll_circular_destroyENTRY(lines 601 611) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-10-27 01:23:43,028 INFO L274 CegarLoopResult]: For program point dll_circular_destroyEXIT(lines 601 611) no Hoare annotation was computed. [2020-10-27 01:23:43,028 INFO L274 CegarLoopResult]: For program point __bswap_32ENTRY(lines 74 78) no Hoare annotation was computed. [2020-10-27 01:23:43,028 INFO L274 CegarLoopResult]: For program point __bswap_32FINAL(lines 74 78) no Hoare annotation was computed. [2020-10-27 01:23:43,028 INFO L274 CegarLoopResult]: For program point __bswap_32EXIT(lines 74 78) no Hoare annotation was computed. [2020-10-27 01:23:43,028 INFO L274 CegarLoopResult]: For program point __bswap_64ENTRY(lines 79 83) no Hoare annotation was computed. [2020-10-27 01:23:43,028 INFO L274 CegarLoopResult]: For program point __bswap_64FINAL(lines 79 83) no Hoare annotation was computed. [2020-10-27 01:23:43,028 INFO L274 CegarLoopResult]: For program point __bswap_64EXIT(lines 79 83) no Hoare annotation was computed. [2020-10-27 01:23:43,028 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:23:43,028 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 01:23:43,028 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 01:23:43,028 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:23:43,029 INFO L274 CegarLoopResult]: For program point L640-1(lines 640 646) no Hoare annotation was computed. [2020-10-27 01:23:43,029 INFO L274 CegarLoopResult]: For program point L640-2(lines 640 646) no Hoare annotation was computed. [2020-10-27 01:23:43,029 INFO L270 CegarLoopResult]: At program point L640-4(lines 640 646) the Hoare annotation is: (let ((.cse9 (select (select |#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|)) (.cse11 (select (select |#memory_$Pointer$.offset| |main_~#s~0.base|) |main_~#s~0.offset|))) (let ((.cse17 (select (select |#memory_$Pointer$.base| .cse9) .cse11)) (.cse13 (select (select |#memory_$Pointer$.offset| .cse9) .cse11))) (let ((.cse16 (select (select |#memory_$Pointer$.offset| main_~ptr~0.base) main_~ptr~0.offset)) (.cse14 (select (select |#memory_$Pointer$.base| .cse17) .cse13))) (let ((.cse0 (or (and (= .cse11 .cse13) (= .cse17 .cse9)) (let ((.cse18 (select (select |#memory_$Pointer$.offset| .cse17) .cse13))) (and (= .cse11 .cse18) (or (= .cse9 .cse14) (and (= (select (select |#memory_$Pointer$.base| .cse14) .cse18) .cse9) (= .cse11 (select (select |#memory_$Pointer$.offset| .cse14) .cse18)))) (= .cse11 0))))) (.cse1 (<= main_~len~0 2)) (.cse2 (= main_~data~0 1)) (.cse3 (= .cse11 .cse16)) (.cse4 (= main_~data~0 (select (select |#memory_int| main_~ptr~0.base) (+ main_~ptr~0.offset 8)))) (.cse5 (= (select (select |#memory_int| .cse17) (+ .cse13 8)) main_~data~0)) (.cse6 (= (select (select |#memory_int| .cse9) (+ .cse11 8)) main_~uneq~0)) (.cse7 (<= 2 main_~len~0)) (.cse8 (= |main_~#s~0.offset| 0)) (.cse10 (select (select |#memory_$Pointer$.base| main_~ptr~0.base) main_~ptr~0.offset)) (.cse12 (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|))) (or (and .cse0 (<= main_~count~0 main_~len~0) .cse1 (<= main_~len~0 main_~count~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= .cse9 .cse10) (= .cse11 main_~ptr~0.offset) .cse12) (let ((.cse15 (+ main_~count~0 1))) (and (= .cse13 0) (= main_~data~0 (select (select |#memory_int| .cse10) 8)) .cse0 .cse1 (not (= main_~uneq~0 1)) (= main_~data~0 (select (select |#memory_int| .cse14) 8)) (= main_~ptr~0.offset 0) (<= .cse15 main_~len~0) .cse2 (= .cse11 (select (select |#memory_$Pointer$.offset| .cse10) .cse16)) .cse3 .cse4 (<= main_~len~0 .cse15) .cse5 .cse6 .cse7 .cse8 (= (select (select |#memory_$Pointer$.base| .cse10) .cse16) .cse9) .cse12))))))) [2020-10-27 01:23:43,029 INFO L274 CegarLoopResult]: For program point L640-5(lines 628 654) no Hoare annotation was computed. [2020-10-27 01:23:43,030 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 628 654) no Hoare annotation was computed. [2020-10-27 01:23:43,030 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 628 654) no Hoare annotation was computed. [2020-10-27 01:23:43,030 INFO L274 CegarLoopResult]: For program point L641(lines 641 643) no Hoare annotation was computed. [2020-10-27 01:23:43,030 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 628 654) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-27 01:23:43,030 INFO L274 CegarLoopResult]: For program point L635(lines 635 637) no Hoare annotation was computed. [2020-10-27 01:23:43,030 INFO L270 CegarLoopResult]: At program point L633(line 633) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|))) (let ((.cse2 (select (select |#memory_$Pointer$.offset| |main_~#s~0.base|) |main_~#s~0.offset|)) (.cse4 (select |#memory_$Pointer$.base| .cse0))) (let ((.cse3 (select |#memory_$Pointer$.offset| .cse0)) (.cse1 (select .cse4 4)) (.cse5 (+ .cse2 4))) (and (= main_~data~0 (select (select |#memory_int| .cse0) 8)) (<= main_~len~0 2) (not (= main_~uneq~0 1)) (not (= |main_~#s~0.base| .cse1)) (= .cse2 0) (= (select .cse3 0) 0) (= main_~data~0 1) (= (select .cse4 .cse2) .cse1) (= main_~data~0 (select (select |#memory_int| .cse1) 8)) (<= 2 main_~len~0) (= (select |#valid| .cse0) 1) (= |main_~#s~0.offset| (select .cse3 4)) (= (select .cse3 .cse5) 0) (not (= .cse0 0)) (= (select |#valid| .cse1) 1) (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|) (not (= (select .cse4 .cse5) .cse0)))))) [2020-10-27 01:23:43,030 INFO L274 CegarLoopResult]: For program point L633-1(line 633) no Hoare annotation was computed. [2020-10-27 01:23:43,031 INFO L270 CegarLoopResult]: At program point L631(line 631) the Hoare annotation is: (let ((.cse0 (@diff |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|)) (.cse2 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse3 (@diff |old(#memory_$Pointer$.offset)| |#memory_$Pointer$.offset|))) (and (= main_~len~0 2) (= |#memory_$Pointer$.base| (store |old(#memory_$Pointer$.base)| .cse0 (select |#memory_$Pointer$.base| .cse0))) (= (let ((.cse1 (@diff |#memory_int| |old(#memory_int)|))) (store |#memory_int| .cse1 (select |old(#memory_int)| .cse1))) |old(#memory_int)|) (or .cse2 (= (select |old(#valid)| .cse3) 0)) (= |#memory_$Pointer$.offset| (store |old(#memory_$Pointer$.offset)| .cse3 (select |#memory_$Pointer$.offset| .cse3))) (= |main_~#s~0.offset| 0) (or (= |#memory_int| |old(#memory_int)|) (= (select |old(#valid)| (@diff |old(#memory_int)| |#memory_int|)) 0)) (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|) (= main_~data~0 1) (or (and (= (select |old(#valid)| .cse0) 0) (<= (+ .cse0 1) |#StackHeapBarrier|)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (or .cse2 (<= (+ .cse3 1) |#StackHeapBarrier|)))) [2020-10-27 01:23:43,031 INFO L274 CegarLoopResult]: For program point L631-1(line 631) no Hoare annotation was computed. [2020-10-27 01:23:43,031 INFO L274 CegarLoopResult]: For program point L652(line 652) no Hoare annotation was computed. [2020-10-27 01:23:43,031 INFO L270 CegarLoopResult]: At program point L650(line 650) the Hoare annotation is: (<= 2 main_~len~0) [2020-10-27 01:23:43,031 INFO L274 CegarLoopResult]: For program point L650-1(line 650) no Hoare annotation was computed. [2020-10-27 01:23:43,031 INFO L270 CegarLoopResult]: At program point L648(lines 628 654) the Hoare annotation is: false [2020-10-27 01:23:43,031 INFO L270 CegarLoopResult]: At program point dll_circular_prependENTRY(lines 612 627) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-27 01:23:43,031 INFO L274 CegarLoopResult]: For program point dll_circular_prependEXIT(lines 612 627) no Hoare annotation was computed. [2020-10-27 01:23:43,031 INFO L274 CegarLoopResult]: For program point L614(lines 614 626) no Hoare annotation was computed. [2020-10-27 01:23:43,031 INFO L270 CegarLoopResult]: At program point L613(line 613) the Hoare annotation is: (and (= dll_circular_prepend_~head.base |dll_circular_prepend_#in~head.base|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |dll_circular_prepend_#in~head.offset| dll_circular_prepend_~head.offset) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= dll_circular_prepend_~data |dll_circular_prepend_#in~data|) (= |old(#valid)| |#valid|)) [2020-10-27 01:23:43,031 INFO L274 CegarLoopResult]: For program point L613-1(line 613) no Hoare annotation was computed. [2020-10-27 01:23:43,032 INFO L274 CegarLoopResult]: For program point L614-2(lines 612 627) no Hoare annotation was computed. [2020-10-27 01:23:43,032 INFO L274 CegarLoopResult]: For program point dll_circular_createEXIT(lines 585 600) no Hoare annotation was computed. [2020-10-27 01:23:43,032 INFO L274 CegarLoopResult]: For program point dll_circular_createFINAL(lines 585 600) no Hoare annotation was computed. [2020-10-27 01:23:43,032 INFO L274 CegarLoopResult]: For program point L591(lines 591 593) no Hoare annotation was computed. [2020-10-27 01:23:43,032 INFO L270 CegarLoopResult]: At program point L589(line 589) the Hoare annotation is: (or (let ((.cse2 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse3 (@diff |old(#memory_$Pointer$.offset)| |#memory_$Pointer$.offset|)) (.cse0 (@diff |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|))) (and (= dll_circular_create_~data |dll_circular_create_#in~data|) (= |#memory_$Pointer$.base| (store |old(#memory_$Pointer$.base)| .cse0 (select |#memory_$Pointer$.base| .cse0))) (= dll_circular_create_~len |dll_circular_create_#in~len|) (<= (+ dll_circular_create_~last~0.base 1) |#StackHeapBarrier|) (= dll_circular_create_~last~0.offset 0) (= (select (select |#memory_int| dll_circular_create_~head~0.base) 8) |dll_circular_create_#in~data|) (= (let ((.cse1 (@diff |#memory_int| |old(#memory_int)|))) (store |#memory_int| .cse1 (select |old(#memory_int)| .cse1))) |old(#memory_int)|) (or (= |#memory_int| |old(#memory_int)|) (= (select |old(#valid)| (@diff |old(#memory_int)| |#memory_int|)) 0)) (or .cse2 (<= (+ .cse3 1) |#StackHeapBarrier|)) (= dll_circular_create_~head~0.base dll_circular_create_~last~0.base) (or .cse2 (= (select |old(#valid)| .cse3) 0)) (= dll_circular_create_~head~0.offset 0) (= (select (select |#memory_$Pointer$.offset| dll_circular_create_~head~0.base) dll_circular_create_~last~0.offset) 0) (= |#memory_$Pointer$.offset| (store |old(#memory_$Pointer$.offset)| .cse3 (select |#memory_$Pointer$.offset| .cse3))) (= (select |#valid| dll_circular_create_~head~0.base) 1) (or (and (= (select |old(#valid)| .cse0) 0) (<= (+ .cse0 1) |#StackHeapBarrier|)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)))) (not (<= 2 |dll_circular_create_#in~len|)) (not (<= |dll_circular_create_#in~len| 2))) [2020-10-27 01:23:43,032 INFO L274 CegarLoopResult]: For program point L591-2(lines 591 593) no Hoare annotation was computed. [2020-10-27 01:23:43,032 INFO L274 CegarLoopResult]: For program point L589-1(line 589) no Hoare annotation was computed. [2020-10-27 01:23:43,032 INFO L270 CegarLoopResult]: At program point L586(line 586) the Hoare annotation is: (or (and (= dll_circular_create_~data |dll_circular_create_#in~data|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= dll_circular_create_~len |dll_circular_create_#in~len|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) (not (<= 2 |dll_circular_create_#in~len|)) (not (<= |dll_circular_create_#in~len| 2))) [2020-10-27 01:23:43,033 INFO L270 CegarLoopResult]: At program point L588-2(lines 588 596) the Hoare annotation is: (let ((.cse14 (select |#valid| dll_circular_create_~head~0.base))) (let ((.cse0 (= dll_circular_create_~data |dll_circular_create_#in~data|)) (.cse2 (<= (+ dll_circular_create_~last~0.base 1) |#StackHeapBarrier|)) (.cse3 (= dll_circular_create_~last~0.offset 0)) (.cse4 (= (select (select |#memory_int| dll_circular_create_~head~0.base) 8) |dll_circular_create_#in~data|)) (.cse8 (= dll_circular_create_~head~0.base dll_circular_create_~last~0.base)) (.cse9 (= dll_circular_create_~head~0.offset 0)) (.cse10 (= .cse14 1))) (or (let ((.cse6 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse7 (@diff |old(#memory_$Pointer$.offset)| |#memory_$Pointer$.offset|)) (.cse1 (@diff |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|))) (and .cse0 (= |#memory_$Pointer$.base| (store |old(#memory_$Pointer$.base)| .cse1 (select |#memory_$Pointer$.base| .cse1))) (= dll_circular_create_~len |dll_circular_create_#in~len|) .cse2 .cse3 .cse4 (= (let ((.cse5 (@diff |#memory_int| |old(#memory_int)|))) (store |#memory_int| .cse5 (select |old(#memory_int)| .cse5))) |old(#memory_int)|) (or (= |#memory_int| |old(#memory_int)|) (= (select |old(#valid)| (@diff |old(#memory_int)| |#memory_int|)) 0)) (or .cse6 (<= (+ .cse7 1) |#StackHeapBarrier|)) .cse8 (or .cse6 (= (select |old(#valid)| .cse7) 0)) .cse9 (= (select (select |#memory_$Pointer$.offset| dll_circular_create_~head~0.base) dll_circular_create_~last~0.offset) 0) (= |#memory_$Pointer$.offset| (store |old(#memory_$Pointer$.offset)| .cse7 (select |#memory_$Pointer$.offset| .cse7))) .cse10 (or (and (= (select |old(#valid)| .cse1) 0) (<= (+ .cse1 1) |#StackHeapBarrier|)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)))) (let ((.cse13 (select |#memory_$Pointer$.offset| dll_circular_create_~last~0.base)) (.cse11 (+ dll_circular_create_~head~0.offset 4)) (.cse12 (+ dll_circular_create_~len 1))) (and .cse0 (= (select (select |#memory_$Pointer$.offset| dll_circular_create_~new_head~0.base) dll_circular_create_~new_head~0.offset) 0) .cse2 .cse3 .cse4 (= (select (store (select (store |#memory_$Pointer$.base| dll_circular_create_~last~0.base (store (select |#memory_$Pointer$.base| dll_circular_create_~last~0.base) dll_circular_create_~last~0.offset dll_circular_create_~head~0.base)) dll_circular_create_~head~0.base) .cse11 dll_circular_create_~last~0.base) dll_circular_create_~head~0.offset) dll_circular_create_~last~0.base) (= dll_circular_create_~new_head~0.offset 0) (<= (+ dll_circular_create_~head~0.base 1) |#StackHeapBarrier|) (<= .cse12 |dll_circular_create_#in~len|) (= (select .cse13 dll_circular_create_~last~0.offset) 0) (= (select (select |#memory_int| dll_circular_create_~new_head~0.base) 8) dll_circular_create_~data) (= (select (select |#memory_int| dll_circular_create_~last~0.base) 8) |dll_circular_create_#in~data|) (not (= dll_circular_create_~new_head~0.base dll_circular_create_~last~0.base)) (not (= dll_circular_create_~head~0.base 0)) (<= (+ dll_circular_create_~new_head~0.base 1) |#StackHeapBarrier|) (not (= dll_circular_create_~new_head~0.base 0)) (= (select (select |#memory_$Pointer$.base| dll_circular_create_~new_head~0.base) dll_circular_create_~new_head~0.offset) dll_circular_create_~last~0.base) (= (select |#valid| dll_circular_create_~new_head~0.base) 1) (not .cse8) (= (select (store (select (store |#memory_$Pointer$.offset| dll_circular_create_~last~0.base (store .cse13 dll_circular_create_~last~0.offset dll_circular_create_~head~0.offset)) dll_circular_create_~head~0.base) .cse11 dll_circular_create_~last~0.offset) dll_circular_create_~head~0.offset) 0) .cse9 .cse10 (= (select |#valid| dll_circular_create_~last~0.base) .cse14) (<= |dll_circular_create_#in~len| .cse12))) (not (<= 2 |dll_circular_create_#in~len|)) (not (<= |dll_circular_create_#in~len| 2))))) [2020-10-27 01:23:43,033 INFO L274 CegarLoopResult]: For program point L586-1(line 586) no Hoare annotation was computed. [2020-10-27 01:23:43,033 INFO L274 CegarLoopResult]: For program point L588-3(lines 588 596) no Hoare annotation was computed. [2020-10-27 01:23:43,033 INFO L270 CegarLoopResult]: At program point dll_circular_createENTRY(lines 585 600) the Hoare annotation is: (or (not (<= 2 |dll_circular_create_#in~len|)) (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) (not (<= |dll_circular_create_#in~len| 2))) [2020-10-27 01:23:43,033 INFO L274 CegarLoopResult]: For program point L577(lines 577 579) no Hoare annotation was computed. [2020-10-27 01:23:43,033 INFO L274 CegarLoopResult]: For program point L577-1(lines 577 579) no Hoare annotation was computed. [2020-10-27 01:23:43,033 INFO L270 CegarLoopResult]: At program point node_createENTRY(lines 575 584) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-27 01:23:43,033 INFO L274 CegarLoopResult]: For program point node_createFINAL(lines 575 584) no Hoare annotation was computed. [2020-10-27 01:23:43,033 INFO L274 CegarLoopResult]: For program point node_createEXIT(lines 575 584) no Hoare annotation was computed. [2020-10-27 01:23:43,034 INFO L277 CegarLoopResult]: At program point L578(line 578) the Hoare annotation is: true [2020-10-27 01:23:43,044 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:246) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translateStore(Term2Expression.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:157) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:707) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:267) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-27 01:23:43,048 INFO L168 Benchmark]: Toolchain (without parser) took 142147.65 ms. Allocated memory was 151.0 MB in the beginning and 934.3 MB in the end (delta: 783.3 MB). Free memory was 124.9 MB in the beginning and 643.6 MB in the end (delta: -518.7 MB). Peak memory consumption was 573.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:23:43,049 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 151.0 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:23:43,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.02 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 101.1 MB in the end (delta: 23.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:23:43,050 INFO L168 Benchmark]: Boogie Preprocessor took 99.64 ms. Allocated memory is still 151.0 MB. Free memory was 101.1 MB in the beginning and 98.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:23:43,051 INFO L168 Benchmark]: RCFGBuilder took 815.11 ms. Allocated memory is still 151.0 MB. Free memory was 98.0 MB in the beginning and 85.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:23:43,052 INFO L168 Benchmark]: TraceAbstraction took 140520.75 ms. Allocated memory was 151.0 MB in the beginning and 934.3 MB in the end (delta: 783.3 MB). Free memory was 85.4 MB in the beginning and 643.6 MB in the end (delta: -558.2 MB). Peak memory consumption was 533.9 MB. Max. memory is 8.0 GB. [2020-10-27 01:23:43,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 151.0 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 698.02 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 101.1 MB in the end (delta: 23.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 99.64 ms. Allocated memory is still 151.0 MB. Free memory was 101.1 MB in the beginning and 98.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 815.11 ms. Allocated memory is still 151.0 MB. Free memory was 98.0 MB in the beginning and 85.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 140520.75 ms. Allocated memory was 151.0 MB in the beginning and 934.3 MB in the end (delta: 783.3 MB). Free memory was 85.4 MB in the beginning and 643.6 MB in the end (delta: -558.2 MB). Peak memory consumption was 533.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 573]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 628]: Loop Invariant Derived loop invariant: 0 - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:553) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...