/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-simple/dll2c_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:45:52,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:45:52,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:45:53,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:45:53,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:45:53,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:45:53,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:45:53,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:45:53,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:45:53,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:45:53,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:45:53,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:45:53,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:45:53,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:45:53,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:45:53,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:45:53,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:45:53,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:45:53,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:45:53,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:45:53,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:45:53,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:45:53,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:45:53,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:45:53,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:45:53,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:45:53,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:45:53,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:45:53,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:45:53,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:45:53,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:45:53,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:45:53,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:45:53,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:45:53,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:45:53,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:45:53,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:45:53,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:45:53,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:45:53,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:45:53,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:45:53,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:45:53,162 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:45:53,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:45:53,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:45:53,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:45:53,164 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:45:53,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:45:53,165 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:45:53,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:45:53,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:45:53,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:45:53,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:45:53,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:45:53,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:45:53,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:45:53,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:45:53,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:45:53,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:45:53,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:45:53,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:45:53,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:45:53,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:45:53,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:45:53,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:45:53,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:45:53,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:45:53,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:45:53,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:45:53,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:45:53,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:45:53,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:45:53,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:45:53,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:45:53,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:45:53,667 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:45:53,668 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:45:53,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_prepend_unequal.i [2020-10-28 14:45:53,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eeb6a46bd/d821a65cf9ff4a2a8fe2b0544ecfaa3a/FLAGf94527f64 [2020-10-28 14:45:54,499 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:45:54,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_prepend_unequal.i [2020-10-28 14:45:54,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eeb6a46bd/d821a65cf9ff4a2a8fe2b0544ecfaa3a/FLAGf94527f64 [2020-10-28 14:45:54,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eeb6a46bd/d821a65cf9ff4a2a8fe2b0544ecfaa3a [2020-10-28 14:45:54,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:45:54,705 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:45:54,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:45:54,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:45:54,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:45:54,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:45:54" (1/1) ... [2020-10-28 14:45:54,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c1e6964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:45:54, skipping insertion in model container [2020-10-28 14:45:54,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:45:54" (1/1) ... [2020-10-28 14:45:54,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:45:54,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:45:55,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:45:55,272 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:45:55,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:45:55,417 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:45:55,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:45:55 WrapperNode [2020-10-28 14:45:55,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:45:55,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:45:55,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:45:55,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:45:55,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:45:55" (1/1) ... [2020-10-28 14:45:55,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:45:55" (1/1) ... [2020-10-28 14:45:55,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:45:55" (1/1) ... [2020-10-28 14:45:55,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:45:55" (1/1) ... [2020-10-28 14:45:55,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:45:55" (1/1) ... [2020-10-28 14:45:55,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:45:55" (1/1) ... [2020-10-28 14:45:55,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:45:55" (1/1) ... [2020-10-28 14:45:55,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:45:55,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:45:55,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:45:55,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:45:55,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:45:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:45:55,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:45:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:45:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:45:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:45:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:45:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-28 14:45:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-28 14:45:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-28 14:45:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2020-10-28 14:45:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_prepend [2020-10-28 14:45:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:45:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:45:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:45:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:45:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:45:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:45:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:45:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:45:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:45:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:45:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:45:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:45:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:45:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:45:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:45:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:45:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:45:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:45:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:45:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:45:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:45:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:45:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:45:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:45:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:45:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:45:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:45:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:45:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:45:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:45:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:45:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:45:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:45:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:45:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:45:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:45:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:45:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:45:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:45:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:45:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:45:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:45:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:45:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:45:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:45:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:45:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:45:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:45:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:45:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:45:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:45:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:45:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:45:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:45:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:45:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:45:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:45:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:45:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:45:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:45:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:45:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:45:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:45:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:45:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:45:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:45:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:45:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:45:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:45:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:45:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:45:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:45:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:45:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:45:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:45:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:45:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:45:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:45:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:45:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:45:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:45:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:45:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:45:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:45:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:45:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:45:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:45:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:45:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:45:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:45:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:45:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:45:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:45:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:45:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:45:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:45:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:45:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:45:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:45:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:45:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:45:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:45:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:45:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:45:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:45:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:45:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:45:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:45:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:45:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:45:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:45:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-28 14:45:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-28 14:45:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:45:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:45:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:45:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-28 14:45:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2020-10-28 14:45:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:45:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:45:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_prepend [2020-10-28 14:45:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:45:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:45:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:45:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:45:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:45:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:45:56,034 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-28 14:45:56,255 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:45:56,255 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 14:45:56,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:45:56 BoogieIcfgContainer [2020-10-28 14:45:56,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:45:56,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:45:56,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:45:56,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:45:56,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:45:54" (1/3) ... [2020-10-28 14:45:56,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f912e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:45:56, skipping insertion in model container [2020-10-28 14:45:56,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:45:55" (2/3) ... [2020-10-28 14:45:56,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f912e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:45:56, skipping insertion in model container [2020-10-28 14:45:56,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:45:56" (3/3) ... [2020-10-28 14:45:56,267 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_prepend_unequal.i [2020-10-28 14:45:56,279 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:45:56,285 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:45:56,299 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:45:56,325 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:45:56,325 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:45:56,325 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:45:56,325 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:45:56,326 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:45:56,326 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:45:56,326 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:45:56,326 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:45:56,344 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-28 14:45:56,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 14:45:56,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:45:56,352 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] [2020-10-28 14:45:56,352 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:45:56,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:45:56,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1314255548, now seen corresponding path program 1 times [2020-10-28 14:45:56,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:45:56,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711818200] [2020-10-28 14:45:56,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:45:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:45:56,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:56,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:57,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:45:57,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:01,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:01,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 14:46:01,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:46:01,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 14:46:01,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:01,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:46:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:46:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:46:01,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:46:01,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:01,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:01,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:01,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:01,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:01,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:46:01,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:01,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:01,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:01,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:46:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:01,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:01,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:01,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:46:01,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:01,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 14:46:01,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:01,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:46:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:46:01,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:46:01,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:46:01,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:01,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:01,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:01,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:01,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:01,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:46:01,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:01,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:01,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:46:01,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:01,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:46:01,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:01,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:46:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:01,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:01,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:01,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:46:01,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:01,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:46:01,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:01,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:01,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:46:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:01,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:01,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:01,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:01,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:01,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:01,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:01,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:46:01,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:01,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:01,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:01,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:01,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:46:01,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711818200] [2020-10-28 14:46:01,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:46:01,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:46:01,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584978627] [2020-10-28 14:46:01,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:46:01,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:46:02,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:46:02,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:46:02,013 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 7 states. [2020-10-28 14:46:02,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:46:02,510 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2020-10-28 14:46:02,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:46:02,512 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-28 14:46:02,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:46:02,521 INFO L225 Difference]: With dead ends: 114 [2020-10-28 14:46:02,521 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 14:46:02,525 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 [2020-10-28 14:46:02,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 14:46:02,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2020-10-28 14:46:02,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 14:46:02,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-28 14:46:02,579 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 37 [2020-10-28 14:46:02,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:46:02,582 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-28 14:46:02,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:46:02,582 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-28 14:46:02,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 14:46:02,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:02,589 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] [2020-10-28 14:46:02,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:46:02,590 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:02,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:02,590 INFO L82 PathProgramCache]: Analyzing trace with hash 181676968, now seen corresponding path program 1 times [2020-10-28 14:46:02,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:02,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921858383] [2020-10-28 14:46:02,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:02,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:02,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:04,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:07,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:07,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 14:46:07,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:46:07,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 14:46:07,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:07,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:46:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:46:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 14:46:07,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:07,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:07,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:07,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:07,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:07,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:46:07,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:07,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:07,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:07,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:07,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:07,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:07,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:46:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:07,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:07,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:07,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:46:07,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:07,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 14:46:07,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:07,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:07,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:46:07,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:07,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:46:07,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:07,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:07,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:07,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:07,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:07,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:46:07,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:07,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:07,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:07,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:46:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:07,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:07,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:07,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:07,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:07,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:46:07,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:07,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:07,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:07,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:46:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:08,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:08,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:08,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:46:08,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:08,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-28 14:46:08,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:08,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:08,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:46:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:46:08,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:08,463 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2020-10-28 14:46:08,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:08,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:08,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:08,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:08,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:08,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 14:46:08,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:08,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:08,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:46:08,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:08,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:46:08,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 14:46:08,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921858383] [2020-10-28 14:46:08,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:46:08,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 14:46:08,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550700582] [2020-10-28 14:46:08,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:46:08,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:46:08,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:46:08,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:46:08,647 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 13 states. [2020-10-28 14:46:10,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:46:10,388 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-10-28 14:46:10,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:46:10,389 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-10-28 14:46:10,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:46:10,391 INFO L225 Difference]: With dead ends: 57 [2020-10-28 14:46:10,391 INFO L226 Difference]: Without dead ends: 53 [2020-10-28 14:46:10,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:46:10,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-28 14:46:10,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-10-28 14:46:10,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 14:46:10,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-28 14:46:10,418 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 47 [2020-10-28 14:46:10,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:46:10,419 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-28 14:46:10,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:46:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-28 14:46:10,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 14:46:10,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:10,422 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] [2020-10-28 14:46:10,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:46:10,423 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:10,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:10,424 INFO L82 PathProgramCache]: Analyzing trace with hash -627669658, now seen corresponding path program 1 times [2020-10-28 14:46:10,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:10,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024978066] [2020-10-28 14:46:10,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:10,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:14,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:14,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 14:46:14,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:14,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3541 [2020-10-28 14:46:14,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:14,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 14:46:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:46:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 14:46:14,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:14,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:14,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:14,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:14,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:14,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:14,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:46:14,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:14,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:14,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:14,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:14,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:14,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:14,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:46:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:14,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:14,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:14,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:46:14,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:14,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-28 14:46:14,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:14,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:14,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:46:14,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:14,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:46:14,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:14,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:14,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:14,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:14,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:14,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:14,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:46:14,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:14,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:14,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:46:14,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:14,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:46:14,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:46:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:14,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:14,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:14,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:14,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:14,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 14:46:14,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:14,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:14,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:46:14,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:14,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:46:14,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:14,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:46:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:15,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:15,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:46:15,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:15,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-28 14:46:15,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:15,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:15,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:46:15,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:46:15,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:46:15,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:15,880 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-10-28 14:46:16,349 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2020-10-28 14:46:16,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:16,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:16,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:16,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:16,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:16,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 14:46:16,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:16,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:16,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:46:16,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:46:16,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:46:16,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:16,855 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-10-28 14:46:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:46:16,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024978066] [2020-10-28 14:46:16,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:46:16,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 14:46:16,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140015974] [2020-10-28 14:46:16,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 14:46:16,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:46:16,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 14:46:16,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2020-10-28 14:46:16,888 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 25 states. [2020-10-28 14:46:19,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:46:19,407 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-10-28 14:46:19,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 14:46:19,413 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 47 [2020-10-28 14:46:19,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:46:19,421 INFO L225 Difference]: With dead ends: 52 [2020-10-28 14:46:19,421 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 14:46:19,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 14:46:19,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 14:46:19,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2020-10-28 14:46:19,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 14:46:19,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-28 14:46:19,440 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 47 [2020-10-28 14:46:19,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:46:19,441 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-28 14:46:19,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 14:46:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-28 14:46:19,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:46:19,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:19,443 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] [2020-10-28 14:46:19,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:46:19,444 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:19,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:19,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1511078109, now seen corresponding path program 1 times [2020-10-28 14:46:19,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:19,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468280569] [2020-10-28 14:46:19,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:19,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:19,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:21,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:24,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:24,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 14:46:24,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:46:24,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 14:46:24,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:24,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 14:46:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:46:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 14:46:24,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:24,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:24,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:24,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:24,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:24,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:24,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:46:24,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:24,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:24,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:24,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:24,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:24,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:24,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:46:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:24,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:24,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:25,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:25,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:46:25,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:46:25,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-28 14:46:25,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:25,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:46:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:46:25,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:25,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:25,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:25,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:25,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:25,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:25,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:46:25,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:25,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:25,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:25,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:25,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:25,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:25,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:46:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:25,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:25,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:25,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:25,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:25,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:46:25,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:46:25,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:25,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:46:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:46:25,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:25,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:46:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:25,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:25,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:25,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:46:25,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:25,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 14:46:25,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:25,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:25,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:46:25,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:46:25,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:46:25,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:25,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:25,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:25,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:25,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:25,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:25,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 14:46:25,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:25,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:46:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:46:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:46:25,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 14:46:25,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468280569] [2020-10-28 14:46:25,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:46:25,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 14:46:25,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478442355] [2020-10-28 14:46:25,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 14:46:25,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:46:25,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 14:46:25,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:46:25,767 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 19 states. [2020-10-28 14:46:26,989 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-28 14:46:27,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:46:27,487 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2020-10-28 14:46:27,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:46:27,487 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2020-10-28 14:46:27,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:46:27,490 INFO L225 Difference]: With dead ends: 81 [2020-10-28 14:46:27,490 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 14:46:27,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2020-10-28 14:46:27,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 14:46:27,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-28 14:46:27,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 14:46:27,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-10-28 14:46:27,510 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 49 [2020-10-28 14:46:27,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:46:27,510 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-10-28 14:46:27,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 14:46:27,511 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-10-28 14:46:27,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:46:27,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:27,513 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] [2020-10-28 14:46:27,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:46:27,514 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:27,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:27,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1904105119, now seen corresponding path program 1 times [2020-10-28 14:46:27,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:27,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513435876] [2020-10-28 14:46:27,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:27,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:32,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:32,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 14:46:32,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:32,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4929 [2020-10-28 14:46:32,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:32,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:32,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 14:46:32,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:46:32,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 14:46:32,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:32,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:32,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:32,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:32,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:32,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:32,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:46:32,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:32,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:32,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:32,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:32,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:32,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:46:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:33,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:33,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:46:33,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:33,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-28 14:46:33,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:33,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:33,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 14:46:33,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:33,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:46:33,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:33,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:34,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:34,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:34,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:34,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:34,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:46:34,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:34,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:34,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:46:34,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:34,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:46:34,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:34,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:46:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:34,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:34,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:34,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:34,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:34,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 14:46:34,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:34,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:34,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:46:34,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:46:34,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:46:34,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:34,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:46:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:34,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:35,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:35,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:46:35,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:35,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-28 14:46:35,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:35,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:35,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:46:35,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:46:35,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:46:35,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:35,391 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-10-28 14:46:35,814 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-10-28 14:46:35,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:35,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:36,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:36,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:36,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 14:46:36,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:36,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:46:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:46:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:46:36,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:36,468 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2020-10-28 14:46:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:46:36,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513435876] [2020-10-28 14:46:36,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:46:36,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 14:46:36,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385140167] [2020-10-28 14:46:36,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 14:46:36,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:46:36,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 14:46:36,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2020-10-28 14:46:36,503 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 29 states. [2020-10-28 14:46:37,249 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-28 14:46:39,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:46:39,874 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2020-10-28 14:46:39,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 14:46:39,875 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 49 [2020-10-28 14:46:39,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:46:39,876 INFO L225 Difference]: With dead ends: 69 [2020-10-28 14:46:39,876 INFO L226 Difference]: Without dead ends: 65 [2020-10-28 14:46:39,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 14:46:39,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-28 14:46:39,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2020-10-28 14:46:39,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 14:46:39,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2020-10-28 14:46:39,904 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 49 [2020-10-28 14:46:39,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:46:39,910 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-10-28 14:46:39,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 14:46:39,910 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2020-10-28 14:46:39,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:46:39,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:39,913 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] [2020-10-28 14:46:39,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:46:39,913 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:39,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:39,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1635731669, now seen corresponding path program 1 times [2020-10-28 14:46:39,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:39,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942405970] [2020-10-28 14:46:39,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:40,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:44,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:45,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:45,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 14:46:45,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:46:45,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 14:46:45,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:45,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:45,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 14:46:45,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:46:45,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 14:46:45,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:45,318 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-10-28 14:46:45,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:45,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:45,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:45,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:45,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:45,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:46:45,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:45,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:45,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:45,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:46:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:45,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:46,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:46,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:46:46,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:46,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-28 14:46:46,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:46,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:46,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:46:46,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:46,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:46:46,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:46,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:46,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:46,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:46,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:46,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:46,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:46:46,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:46,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:46,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:46:46,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:46,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:46:46,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:46,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:46:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:46,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:46,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:46,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:46,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:46,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 14:46:46,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:46,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:46,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:46:46,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:46:46,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:46:46,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:46,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:46:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:47,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:47,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:47,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:46:47,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:47,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-28 14:46:47,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:47,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:47,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:46:47,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:46:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:46:47,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:47,812 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-10-28 14:46:48,950 WARN L193 SmtUtils]: Spent 856.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 132 [2020-10-28 14:46:49,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:49,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:49,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:49,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:49,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:46:49,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:49,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:46:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:46:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:46:49,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:46:49,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942405970] [2020-10-28 14:46:49,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:46:49,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 14:46:49,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635925693] [2020-10-28 14:46:49,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 14:46:49,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:46:49,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 14:46:49,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=747, Unknown=0, NotChecked=0, Total=812 [2020-10-28 14:46:49,639 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 29 states. [2020-10-28 14:46:50,555 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-28 14:46:51,616 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-28 14:46:52,127 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-10-28 14:46:53,502 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2020-10-28 14:46:54,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:46:54,201 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2020-10-28 14:46:54,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 14:46:54,203 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 52 [2020-10-28 14:46:54,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:46:54,205 INFO L225 Difference]: With dead ends: 75 [2020-10-28 14:46:54,205 INFO L226 Difference]: Without dead ends: 70 [2020-10-28 14:46:54,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=162, Invalid=1908, Unknown=0, NotChecked=0, Total=2070 [2020-10-28 14:46:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-28 14:46:54,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2020-10-28 14:46:54,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 14:46:54,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2020-10-28 14:46:54,219 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 52 [2020-10-28 14:46:54,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:46:54,220 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2020-10-28 14:46:54,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 14:46:54,220 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2020-10-28 14:46:54,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 14:46:54,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:54,221 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] [2020-10-28 14:46:54,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:46:54,222 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:54,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:54,222 INFO L82 PathProgramCache]: Analyzing trace with hash 870577207, now seen corresponding path program 1 times [2020-10-28 14:46:54,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:54,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774398246] [2020-10-28 14:46:54,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:54,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:55,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:59,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:59,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 14:46:59,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:46:59,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 14:46:59,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:59,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:59,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-28 14:46:59,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:46:59,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 14:46:59,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:59,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:59,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:59,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:59,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:59,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:59,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:46:59,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:59,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:59,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:46:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:00,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:00,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:47:00,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:00,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-10-28 14:47:00,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:00,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 14:47:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:47:00,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:00,696 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-10-28 14:47:00,980 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-10-28 14:47:01,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:47:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:01,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:01,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:01,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:01,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:01,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:47:01,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:01,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:47:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:47:01,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:01,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:47:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:01,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:01,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:01,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:01,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:01,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 14:47:01,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:01,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:47:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:47:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:47:01,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:01,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:47:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:01,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:02,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:02,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:47:02,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:02,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-28 14:47:02,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:02,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:02,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:47:02,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:47:02,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:47:02,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:02,841 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-28 14:47:03,426 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2020-10-28 14:47:04,019 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 59 [2020-10-28 14:47:04,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:47:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:04,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:04,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:04,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:04,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:04,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 14:47:04,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:04,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:04,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:47:04,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:47:04,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:47:04,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:04,846 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2020-10-28 14:47:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:47:04,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774398246] [2020-10-28 14:47:04,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:47:04,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 14:47:04,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908233151] [2020-10-28 14:47:04,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 14:47:04,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:47:04,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 14:47:04,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=808, Unknown=0, NotChecked=0, Total=870 [2020-10-28 14:47:04,888 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 30 states. [2020-10-28 14:47:06,717 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 14:47:09,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:47:09,789 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-10-28 14:47:09,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 14:47:09,790 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 53 [2020-10-28 14:47:09,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:47:09,793 INFO L225 Difference]: With dead ends: 73 [2020-10-28 14:47:09,793 INFO L226 Difference]: Without dead ends: 69 [2020-10-28 14:47:09,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=152, Invalid=1918, Unknown=0, NotChecked=0, Total=2070 [2020-10-28 14:47:09,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-28 14:47:09,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2020-10-28 14:47:09,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 14:47:09,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2020-10-28 14:47:09,820 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 53 [2020-10-28 14:47:09,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:47:09,821 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2020-10-28 14:47:09,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 14:47:09,821 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2020-10-28 14:47:09,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 14:47:09,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:47:09,824 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] [2020-10-28 14:47:09,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:47:09,825 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:47:09,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:47:09,831 INFO L82 PathProgramCache]: Analyzing trace with hash 137748557, now seen corresponding path program 2 times [2020-10-28 14:47:09,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:47:09,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075772547] [2020-10-28 14:47:09,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:47:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:09,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:10,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:14,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:14,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 14:47:14,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:47:14,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 14:47:14,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:14,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:14,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:47:14,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:47:14,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:47:14,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:14,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:47:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:14,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:14,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:14,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:47:14,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:14,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:47:14,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:14,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:14,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:14,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:47:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:14,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:15,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:15,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 14:47:15,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:15,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 14:47:15,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:15,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:47:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:47:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 14:47:15,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:15,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:47:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:15,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:15,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:15,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:15,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:15,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:47:15,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:15,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:47:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:47:15,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:15,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:47:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:15,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:15,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:15,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:15,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:15,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:47:15,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:15,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:47:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:47:15,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:15,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 14:47:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:15,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:15,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:15,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:15,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:15,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:47:15,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:15,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:15,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:47:15,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:15,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:47:15,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:15,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 14:47:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:15,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:15,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:15,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:47:15,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:15,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:47:15,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:15,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:47:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:15,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:15,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:47:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:15,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:15,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:15,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:15,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:15,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:47:15,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:15,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:15,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:15,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:15,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:15,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:15,223 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 14:47:15,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075772547] [2020-10-28 14:47:15,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:47:15,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:47:15,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630621908] [2020-10-28 14:47:15,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:47:15,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:47:15,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:47:15,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:47:15,227 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand 8 states. [2020-10-28 14:47:15,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:47:15,654 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2020-10-28 14:47:15,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:47:15,655 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-28 14:47:15,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:47:15,656 INFO L225 Difference]: With dead ends: 81 [2020-10-28 14:47:15,657 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 14:47:15,657 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 [2020-10-28 14:47:15,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 14:47:15,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-28 14:47:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 14:47:15,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-28 14:47:15,676 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 59 [2020-10-28 14:47:15,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:47:15,676 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-28 14:47:15,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:47:15,677 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-28 14:47:15,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 14:47:15,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:47:15,679 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] [2020-10-28 14:47:15,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:47:15,679 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:47:15,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:47:15,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2015136619, now seen corresponding path program 1 times [2020-10-28 14:47:15,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:47:15,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104358724] [2020-10-28 14:47:15,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:47:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:15,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:16,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:16,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:47:16,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:47:16,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-10-28 14:47:16,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:16,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:47:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:47:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 14:47:16,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:16,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:47:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:16,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:16,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:16,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:47:16,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:16,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:47:16,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:16,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:16,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:16,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:16,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:16,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:16,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:47:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:16,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:16,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:16,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:47:16,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:47:16,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 14:47:16,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:16,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:47:16,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:16,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:47:16,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:16,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:47:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:16,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:16,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:16,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:16,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:16,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:47:16,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:16,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:16,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:16,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:16,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:16,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:16,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:47:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:16,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:16,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:16,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:16,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:16,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:47:16,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:16,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:16,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:16,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:16,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:47:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:17,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:17,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:17,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:47:17,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:17,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:47:17,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:17,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:47:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:47:17,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:17,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:47:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:17,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:17,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:17,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:17,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:17,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:47:17,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:17,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:17,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-28 14:47:17,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104358724] [2020-10-28 14:47:17,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:47:17,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:47:17,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106056610] [2020-10-28 14:47:17,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:47:17,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:47:17,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:47:17,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:47:17,040 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-28 14:47:17,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:47:17,413 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-10-28 14:47:17,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:47:17,414 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-28 14:47:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:47:17,415 INFO L225 Difference]: With dead ends: 59 [2020-10-28 14:47:17,415 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 14:47:17,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:47:17,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 14:47:17,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-28 14:47:17,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 14:47:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-28 14:47:17,435 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 56 [2020-10-28 14:47:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:47:17,435 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-28 14:47:17,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:47:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-28 14:47:17,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 14:47:17,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:47:17,438 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] [2020-10-28 14:47:17,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:47:17,438 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:47:17,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:47:17,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1993925645, now seen corresponding path program 2 times [2020-10-28 14:47:17,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:47:17,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431583606] [2020-10-28 14:47:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:47:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:17,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:18,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:21,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:22,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:22,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 14:47:22,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:47:22,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 14:47:22,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:22,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 14:47:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:47:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 14:47:22,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:22,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:47:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:22,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:22,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:47:22,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:47:22,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:22,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:47:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:47:22,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:22,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:47:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:22,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:23,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:23,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:47:23,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:23,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-28 14:47:23,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:23,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:23,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:47:23,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:23,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:47:23,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:23,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:47:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:23,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:23,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:23,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:23,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:23,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:47:23,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:23,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:23,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:47:23,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:47:23,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:47:23,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:24,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:47:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:24,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:24,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:24,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:24,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:24,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:47:24,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:24,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:24,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:47:24,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:47:24,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:47:24,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:24,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 14:47:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:24,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:24,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:24,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:47:24,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-28 14:47:24,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:24,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:47:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:47:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:47:24,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:25,244 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-28 14:47:25,688 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-10-28 14:47:26,050 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-28 14:47:26,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:47:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:47:26,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:47:26,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:47:26,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:47:26,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:47:26,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 14:47:26,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:47:26,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:47:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:47:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:47:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:47:26,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:47:26,486 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-10-28 14:47:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:47:26,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431583606] [2020-10-28 14:47:26,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:47:26,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 14:47:26,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495116699] [2020-10-28 14:47:26,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 14:47:26,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:47:26,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 14:47:26,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=808, Unknown=0, NotChecked=0, Total=870 [2020-10-28 14:47:26,524 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 30 states. [2020-10-28 14:47:30,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:47:30,300 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-10-28 14:47:30,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 14:47:30,301 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 57 [2020-10-28 14:47:30,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:47:30,301 INFO L225 Difference]: With dead ends: 51 [2020-10-28 14:47:30,301 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 14:47:30,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=126, Invalid=1514, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 14:47:30,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 14:47:30,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 14:47:30,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 14:47:30,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 14:47:30,303 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-10-28 14:47:30,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:47:30,303 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 14:47:30,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 14:47:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 14:47:30,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 14:47:30,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:47:30,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 14:47:30,960 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2020-10-28 14:47:31,790 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 110 [2020-10-28 14:47:32,222 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2020-10-28 14:47:32,473 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2020-10-28 14:47:32,599 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-28 14:47:32,599 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-28 14:47:32,599 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-28 14:47:32,599 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-28 14:47:32,599 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-28 14:47:32,600 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:47:32,600 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|)) [2020-10-28 14:47:32,600 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:47:32,600 INFO L277 CegarLoopResult]: At program point myexitENTRY(lines 572 574) the Hoare annotation is: true [2020-10-28 14:47:32,600 INFO L277 CegarLoopResult]: At program point L573(line 573) the Hoare annotation is: true [2020-10-28 14:47:32,600 INFO L274 CegarLoopResult]: For program point myexitEXIT(lines 572 574) no Hoare annotation was computed. [2020-10-28 14:47:32,600 INFO L274 CegarLoopResult]: For program point L602(lines 602 610) no Hoare annotation was computed. [2020-10-28 14:47:32,600 INFO L277 CegarLoopResult]: At program point L604-2(lines 604 608) the Hoare annotation is: true [2020-10-28 14:47:32,600 INFO L274 CegarLoopResult]: For program point L604-3(lines 604 608) no Hoare annotation was computed. [2020-10-28 14:47:32,601 INFO L274 CegarLoopResult]: For program point L602-2(lines 601 611) no Hoare annotation was computed. [2020-10-28 14:47:32,601 INFO L270 CegarLoopResult]: At program point dll_circular_destroyENTRY(lines 601 611) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-10-28 14:47:32,601 INFO L274 CegarLoopResult]: For program point dll_circular_destroyEXIT(lines 601 611) no Hoare annotation was computed. [2020-10-28 14:47:32,601 INFO L274 CegarLoopResult]: For program point __bswap_32ENTRY(lines 74 78) no Hoare annotation was computed. [2020-10-28 14:47:32,601 INFO L274 CegarLoopResult]: For program point __bswap_32FINAL(lines 74 78) no Hoare annotation was computed. [2020-10-28 14:47:32,601 INFO L274 CegarLoopResult]: For program point __bswap_32EXIT(lines 74 78) no Hoare annotation was computed. [2020-10-28 14:47:32,601 INFO L274 CegarLoopResult]: For program point __bswap_64ENTRY(lines 79 83) no Hoare annotation was computed. [2020-10-28 14:47:32,601 INFO L274 CegarLoopResult]: For program point __bswap_64FINAL(lines 79 83) no Hoare annotation was computed. [2020-10-28 14:47:32,602 INFO L274 CegarLoopResult]: For program point __bswap_64EXIT(lines 79 83) no Hoare annotation was computed. [2020-10-28 14:47:32,602 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:47:32,602 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 14:47:32,602 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 14:47:32,602 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:47:32,602 INFO L274 CegarLoopResult]: For program point L640-1(lines 640 646) no Hoare annotation was computed. [2020-10-28 14:47:32,602 INFO L274 CegarLoopResult]: For program point L640-2(lines 640 646) no Hoare annotation was computed. [2020-10-28 14:47:32,603 INFO L270 CegarLoopResult]: At program point L640-4(lines 640 646) the Hoare annotation is: (let ((.cse17 (select (select |#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|)) (.cse8 (select (select |#memory_$Pointer$.offset| |main_~#s~0.base|) |main_~#s~0.offset|))) (let ((.cse13 (select (select |#memory_$Pointer$.base| .cse17) .cse8)) (.cse0 (select (select |#memory_$Pointer$.offset| .cse17) .cse8))) (let ((.cse19 (select (select |#memory_$Pointer$.base| .cse13) .cse0)) (.cse20 (select (select |#memory_$Pointer$.offset| .cse13) .cse0))) (let ((.cse3 (= 0 .cse20)) (.cse4 (<= main_~len~0 2)) (.cse5 (= (select (select |#memory_$Pointer$.base| .cse19) .cse20) .cse17)) (.cse6 (= main_~data~0 (select (select |#memory_int| .cse19) 8))) (.cse7 (= .cse8 (select (select |#memory_$Pointer$.offset| .cse19) .cse20))) (.cse9 (= main_~ptr~0.offset 0)) (.cse11 (= main_~data~0 1)) (.cse2 (select (select |#memory_$Pointer$.offset| main_~ptr~0.base) main_~ptr~0.offset)) (.cse12 (= main_~data~0 (select (select |#memory_int| main_~ptr~0.base) (+ main_~ptr~0.offset 8)))) (.cse14 (= (select (select |#memory_int| .cse17) (+ .cse8 8)) main_~uneq~0)) (.cse15 (<= 2 main_~len~0)) (.cse16 (= |main_~#s~0.offset| 0)) (.cse1 (select (select |#memory_$Pointer$.base| main_~ptr~0.base) main_~ptr~0.offset)) (.cse18 (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|))) (or (let ((.cse10 (+ main_~count~0 1))) (and (= .cse0 0) (= main_~data~0 (select (select |#memory_int| .cse1) 8)) (= .cse2 0) .cse3 .cse4 .cse5 (not (= main_~uneq~0 1)) .cse6 .cse7 (= .cse8 0) .cse9 (<= .cse10 main_~len~0) .cse11 (= .cse8 (select (select |#memory_$Pointer$.offset| .cse1) .cse2)) .cse12 (<= main_~len~0 .cse10) (= main_~data~0 (select (select |#memory_int| .cse13) 8)) .cse14 .cse15 .cse16 (= (select (select |#memory_$Pointer$.base| .cse1) .cse2) .cse17) .cse18)) (and .cse3 (<= main_~count~0 main_~len~0) .cse4 .cse5 .cse6 .cse7 .cse9 (<= main_~len~0 main_~count~0) .cse11 (= .cse8 .cse2) .cse12 .cse14 .cse15 .cse16 (= .cse17 .cse1) .cse18)))))) [2020-10-28 14:47:32,603 INFO L274 CegarLoopResult]: For program point L640-5(lines 628 654) no Hoare annotation was computed. [2020-10-28 14:47:32,603 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 628 654) no Hoare annotation was computed. [2020-10-28 14:47:32,603 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 628 654) no Hoare annotation was computed. [2020-10-28 14:47:32,603 INFO L274 CegarLoopResult]: For program point L641(lines 641 643) no Hoare annotation was computed. [2020-10-28 14:47:32,603 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 628 654) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-28 14:47:32,603 INFO L274 CegarLoopResult]: For program point L635(lines 635 637) no Hoare annotation was computed. [2020-10-28 14:47:32,604 INFO L270 CegarLoopResult]: At program point L633(line 633) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$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$.offset| .cse0)) (.cse1 (select .cse4 4)) (.cse5 (+ .cse2 4))) (and (= main_~data~0 (select (select |#memory_int| .cse0) 8)) (<= main_~len~0 2) (not (= main_~uneq~0 1)) (not (= |main_~#s~0.base| .cse1)) (= .cse2 0) (= (select .cse3 0) 0) (= main_~data~0 1) (= (select .cse4 .cse2) .cse1) (= main_~data~0 (select (select |#memory_int| .cse1) 8)) (<= 2 main_~len~0) (= (select |#valid| .cse0) 1) (= |main_~#s~0.offset| (select .cse3 4)) (= (select .cse3 .cse5) 0) (not (= .cse0 0)) (= (select |#valid| .cse1) 1) (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|) (not (= (select .cse4 .cse5) .cse0)))))) [2020-10-28 14:47:32,604 INFO L274 CegarLoopResult]: For program point L633-1(line 633) no Hoare annotation was computed. [2020-10-28 14:47:32,604 INFO L270 CegarLoopResult]: At program point L631(line 631) the Hoare annotation is: (let ((.cse0 (@diff |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|)) (.cse1 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (.cse2 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse3 (@diff |old(#memory_$Pointer$.offset)| |#memory_$Pointer$.offset|))) (and (or (<= (+ .cse0 1) |#StackHeapBarrier|) .cse1) (= |#memory_$Pointer$.base| (store |old(#memory_$Pointer$.base)| .cse0 (select |#memory_$Pointer$.base| .cse0))) (<= main_~len~0 2) (<= 2 main_~len~0) (or .cse2 (= (select |old(#valid)| .cse3) 0)) (= |#memory_$Pointer$.offset| (store |old(#memory_$Pointer$.offset)| .cse3 (select |#memory_$Pointer$.offset| .cse3))) (= |main_~#s~0.offset| 0) (or (= (select |old(#valid)| .cse0) 0) .cse1) (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|) (= main_~data~0 1) (or .cse2 (<= (+ .cse3 1) |#StackHeapBarrier|)))) [2020-10-28 14:47:32,604 INFO L274 CegarLoopResult]: For program point L631-1(line 631) no Hoare annotation was computed. [2020-10-28 14:47:32,604 INFO L274 CegarLoopResult]: For program point L652(line 652) no Hoare annotation was computed. [2020-10-28 14:47:32,604 INFO L270 CegarLoopResult]: At program point L650(line 650) the Hoare annotation is: (<= 2 main_~len~0) [2020-10-28 14:47:32,604 INFO L274 CegarLoopResult]: For program point L650-1(line 650) no Hoare annotation was computed. [2020-10-28 14:47:32,604 INFO L270 CegarLoopResult]: At program point L648(lines 628 654) the Hoare annotation is: false [2020-10-28 14:47:32,605 INFO L270 CegarLoopResult]: At program point dll_circular_prependENTRY(lines 612 627) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-28 14:47:32,605 INFO L274 CegarLoopResult]: For program point dll_circular_prependEXIT(lines 612 627) no Hoare annotation was computed. [2020-10-28 14:47:32,605 INFO L274 CegarLoopResult]: For program point L614(lines 614 626) no Hoare annotation was computed. [2020-10-28 14:47:32,605 INFO L270 CegarLoopResult]: At program point L613(line 613) the Hoare annotation is: (and (= dll_circular_prepend_~head.base |dll_circular_prepend_#in~head.base|) (= |#memory_$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$.base)|) (= dll_circular_prepend_~data |dll_circular_prepend_#in~data|) (= |old(#valid)| |#valid|)) [2020-10-28 14:47:32,605 INFO L274 CegarLoopResult]: For program point L613-1(line 613) no Hoare annotation was computed. [2020-10-28 14:47:32,605 INFO L274 CegarLoopResult]: For program point L614-2(lines 612 627) no Hoare annotation was computed. [2020-10-28 14:47:32,605 INFO L274 CegarLoopResult]: For program point dll_circular_createEXIT(lines 585 600) no Hoare annotation was computed. [2020-10-28 14:47:32,605 INFO L274 CegarLoopResult]: For program point dll_circular_createFINAL(lines 585 600) no Hoare annotation was computed. [2020-10-28 14:47:32,605 INFO L274 CegarLoopResult]: For program point L591(lines 591 593) no Hoare annotation was computed. [2020-10-28 14:47:32,606 INFO L270 CegarLoopResult]: At program point L589(line 589) the Hoare annotation is: (let ((.cse0 (= dll_circular_create_~data |dll_circular_create_#in~data|)) (.cse1 (= dll_circular_create_~last~0.offset 0)) (.cse2 (= dll_circular_create_~head~0.offset 0))) (or (and .cse0 (<= (+ dll_circular_create_~last~0.base 1) |#StackHeapBarrier|) .cse1 (or (not (= dll_circular_create_~head~0.base 0)) (not .cse2)) (<= (+ dll_circular_create_~len 1) |dll_circular_create_#in~len|) (<= 3 |dll_circular_create_#in~len|) (or (not (= dll_circular_create_~new_head~0.base 0)) (not (= dll_circular_create_~new_head~0.offset 0)))) (let ((.cse4 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse5 (@diff |old(#memory_$Pointer$.offset)| |#memory_$Pointer$.offset|)) (.cse3 (@diff |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|)) (.cse6 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|))) (and .cse0 (<= dll_circular_create_~len |dll_circular_create_#in~len|) (= |#memory_$Pointer$.base| (store |old(#memory_$Pointer$.base)| .cse3 (select |#memory_$Pointer$.base| .cse3))) .cse1 (= (select (select |#memory_int| dll_circular_create_~head~0.base) 8) |dll_circular_create_#in~data|) (<= (+ dll_circular_create_~head~0.base 1) |#StackHeapBarrier|) (= (select |#valid| dll_circular_create_~last~0.base) 1) (or .cse4 (<= (+ .cse5 1) |#StackHeapBarrier|)) (= dll_circular_create_~head~0.base dll_circular_create_~last~0.base) (or (<= (+ .cse3 1) |#StackHeapBarrier|) .cse6) (or .cse4 (= (select |old(#valid)| .cse5) 0)) .cse2 (= |#memory_$Pointer$.offset| (store |old(#memory_$Pointer$.offset)| .cse5 (select |#memory_$Pointer$.offset| .cse5))) (or (= (select |old(#valid)| .cse3) 0) .cse6))))) [2020-10-28 14:47:32,606 INFO L274 CegarLoopResult]: For program point L591-2(lines 591 593) no Hoare annotation was computed. [2020-10-28 14:47:32,606 INFO L274 CegarLoopResult]: For program point L589-1(line 589) no Hoare annotation was computed. [2020-10-28 14:47:32,606 INFO L270 CegarLoopResult]: At program point L586(line 586) the Hoare annotation is: (and (= dll_circular_create_~data |dll_circular_create_#in~data|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (<= |dll_circular_create_#in~len| dll_circular_create_~len) (<= dll_circular_create_~len |dll_circular_create_#in~len|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-28 14:47:32,606 INFO L270 CegarLoopResult]: At program point L588-2(lines 588 596) the Hoare annotation is: (let ((.cse12 (= dll_circular_create_~new_head~0.offset 0))) (let ((.cse0 (= dll_circular_create_~data |dll_circular_create_#in~data|)) (.cse11 (<= (+ dll_circular_create_~last~0.base 1) |#StackHeapBarrier|)) (.cse2 (= dll_circular_create_~last~0.offset 0)) (.cse3 (= (select (select |#memory_int| dll_circular_create_~head~0.base) 8) |dll_circular_create_#in~data|)) (.cse4 (<= (+ dll_circular_create_~head~0.base 1) |#StackHeapBarrier|)) (.cse13 (<= (+ dll_circular_create_~len 1) |dll_circular_create_#in~len|)) (.cse5 (= (select |#valid| dll_circular_create_~last~0.base) 1)) (.cse14 (or (not (= dll_circular_create_~new_head~0.base 0)) (not .cse12))) (.cse15 (not (= dll_circular_create_~head~0.base 0))) (.cse16 (<= (+ dll_circular_create_~new_head~0.base 1) |#StackHeapBarrier|)) (.cse17 (= (select |#valid| dll_circular_create_~new_head~0.base) 1)) (.cse8 (= dll_circular_create_~head~0.base dll_circular_create_~last~0.base)) (.cse10 (= dll_circular_create_~head~0.offset 0)) (.cse18 (= (select |#valid| dll_circular_create_~head~0.base) 1))) (or (let ((.cse6 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse7 (@diff |old(#memory_$Pointer$.offset)| |#memory_$Pointer$.offset|)) (.cse1 (@diff |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|)) (.cse9 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|))) (and .cse0 (<= dll_circular_create_~len |dll_circular_create_#in~len|) (= |#memory_$Pointer$.base| (store |old(#memory_$Pointer$.base)| .cse1 (select |#memory_$Pointer$.base| .cse1))) .cse2 .cse3 .cse4 .cse5 (or .cse6 (<= (+ .cse7 1) |#StackHeapBarrier|)) .cse8 (or (<= (+ .cse1 1) |#StackHeapBarrier|) .cse9) (<= |dll_circular_create_#in~len| dll_circular_create_~len) (or .cse6 (= (select |old(#valid)| .cse7) 0)) .cse10 (= |#memory_$Pointer$.offset| (store |old(#memory_$Pointer$.offset)| .cse7 (select |#memory_$Pointer$.offset| .cse7))) (or (= (select |old(#valid)| .cse1) 0) .cse9))) (and .cse0 .cse11 .cse2 .cse12 .cse4 .cse13 .cse14 .cse15 .cse16 .cse17 .cse10 .cse18 (<= 3 |dll_circular_create_#in~len|)) (let ((.cse19 (+ dll_circular_create_~head~0.offset 4))) (and .cse0 (= (select (select |#memory_$Pointer$.offset| dll_circular_create_~new_head~0.base) dll_circular_create_~new_head~0.offset) 0) .cse11 .cse2 .cse3 .cse12 .cse4 .cse13 .cse5 .cse14 (= (select (select |#memory_int| dll_circular_create_~last~0.base) 8) |dll_circular_create_#in~data|) (not (= dll_circular_create_~new_head~0.base dll_circular_create_~last~0.base)) (= (select (store (select (store |#memory_$Pointer$.base| dll_circular_create_~last~0.base (store (select |#memory_$Pointer$.base| dll_circular_create_~last~0.base) dll_circular_create_~last~0.offset dll_circular_create_~head~0.base)) dll_circular_create_~head~0.base) .cse19 dll_circular_create_~last~0.base) 0) dll_circular_create_~last~0.base) .cse15 .cse16 (= (select (select |#memory_int| dll_circular_create_~new_head~0.base) 8) |dll_circular_create_#in~data|) (= (select (select |#memory_$Pointer$.base| dll_circular_create_~new_head~0.base) dll_circular_create_~new_head~0.offset) dll_circular_create_~last~0.base) .cse17 (not .cse8) (= (select (store (select (store |#memory_$Pointer$.offset| dll_circular_create_~last~0.base (store (select |#memory_$Pointer$.offset| dll_circular_create_~last~0.base) dll_circular_create_~last~0.offset dll_circular_create_~head~0.offset)) dll_circular_create_~head~0.base) .cse19 dll_circular_create_~last~0.offset) dll_circular_create_~head~0.offset) 0) .cse10 .cse18))))) [2020-10-28 14:47:32,606 INFO L274 CegarLoopResult]: For program point L586-1(line 586) no Hoare annotation was computed. [2020-10-28 14:47:32,607 INFO L274 CegarLoopResult]: For program point L588-3(lines 588 596) no Hoare annotation was computed. [2020-10-28 14:47:32,607 INFO L270 CegarLoopResult]: At program point dll_circular_createENTRY(lines 585 600) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-28 14:47:32,607 INFO L274 CegarLoopResult]: For program point L577(lines 577 579) no Hoare annotation was computed. [2020-10-28 14:47:32,607 INFO L274 CegarLoopResult]: For program point L577-1(lines 577 579) no Hoare annotation was computed. [2020-10-28 14:47:32,607 INFO L270 CegarLoopResult]: At program point node_createENTRY(lines 575 584) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-28 14:47:32,607 INFO L274 CegarLoopResult]: For program point node_createFINAL(lines 575 584) no Hoare annotation was computed. [2020-10-28 14:47:32,607 INFO L274 CegarLoopResult]: For program point node_createEXIT(lines 575 584) no Hoare annotation was computed. [2020-10-28 14:47:32,607 INFO L277 CegarLoopResult]: At program point L578(line 578) the Hoare annotation is: true [2020-10-28 14:47:32,621 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) [2020-10-28 14:47:32,625 INFO L168 Benchmark]: Toolchain (without parser) took 97924.94 ms. Allocated memory was 160.4 MB in the beginning and 950.0 MB in the end (delta: 789.6 MB). Free memory was 133.4 MB in the beginning and 509.8 MB in the end (delta: -376.4 MB). Peak memory consumption was 413.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:47:32,625 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 160.4 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:47:32,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.07 ms. Allocated memory is still 160.4 MB. Free memory was 132.8 MB in the beginning and 109.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:47:32,627 INFO L168 Benchmark]: Boogie Preprocessor took 69.50 ms. Allocated memory is still 160.4 MB. Free memory was 109.7 MB in the beginning and 106.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:47:32,628 INFO L168 Benchmark]: RCFGBuilder took 752.20 ms. Allocated memory is still 160.4 MB. Free memory was 142.0 MB in the beginning and 92.1 MB in the end (delta: 50.0 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:47:32,628 INFO L168 Benchmark]: TraceAbstraction took 96363.61 ms. Allocated memory was 160.4 MB in the beginning and 950.0 MB in the end (delta: 789.6 MB). Free memory was 91.5 MB in the beginning and 510.4 MB in the end (delta: -418.8 MB). Peak memory consumption was 371.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:47:32,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 160.4 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 709.07 ms. Allocated memory is still 160.4 MB. Free memory was 132.8 MB in the beginning and 109.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 69.50 ms. Allocated memory is still 160.4 MB. Free memory was 109.7 MB in the beginning and 106.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 752.20 ms. Allocated memory is still 160.4 MB. Free memory was 142.0 MB in the beginning and 92.1 MB in the end (delta: 50.0 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 96363.61 ms. Allocated memory was 160.4 MB in the beginning and 950.0 MB in the end (delta: 789.6 MB). Free memory was 91.5 MB in the beginning and 510.4 MB in the end (delta: -418.8 MB). Peak memory consumption was 371.3 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...